ball float steam trap una 38, pn 100/cl 600, dn 15-50 una...

DescriptionUNA 3.. are steam traps with ball float and needle valve for high-pressure applications. The steam traps can be used for all operating conditions, as they are unaffected by back pressure.The steam trap UNA 3.. consists of a body with bolted cover and a control unit. Various control units are available for the steam trap.The control unit SIMPLEX is a level-dependent float controller and especially suitable for cold condensate and superheated steam. The control unit DUPLEX (UNA 38) is a float controller with automatic and temperature dependent deaeration facility by means of a bimetallic air vent. The control unit DUPLEX is suitable for saturated steam and superheated steam.The control unit with orifice (O) 80 MAX (UNA 38) is de-signed for large flowrates and high pressures and available as SIMPLEX or DUPLEX version.The control unit with orifice (O) 140 MAX (UNA 39) is a SIMPLEX control unit for large flowrates and high pressure.

FunctionAs the condensate flows into the steam trap it operates the float, which in turn opens the rolling ball valve of the control unit, and in doing so uncovers the discharge passage. The cross-sectional area of the orifice dictates the max. flow-rate when the discharge passage is completely open. The max. allowable differential pressure of the control unit used depends on the cross-sectional area of the orifice and the density of the fluid to be discharged.UNA 38 with control unit Orifice 80 MAX and UNA 39 with control unit Orifice 140 MAX:The float controls a pilot valve as a function of the condensate level in the steam trap. If more condensate flows through the pilot valve out of the control chamber than follows through a balance opening, the pressure in the control chamber drops and the bellows of the control chamber is compressed.The main valve then opens and the condensate is discharged.The flowing condensate moves the float ball upwards and the pilot valve closes. The vent hole ensures that the pressure between the control chamber and the interior of the steam trap is evened out such that the main valve closes.The size of the cross-sectional area of the pilot valve and the main valve ensures only one orifice (O) is needed for the entire range of differential pressure up to 80 bar (or 140 bar).

Optional extrasManual float-lifting lever

Hand-vent valve for version with DUPLEX control

Material for higher capacities, flanges / butt-weld ends via transition pieces: 1.7335 (UNA 38) high temperature

Flow from right to left for UNA 38 (viewed from cover end)

Ball Float Steam TrapUNA 38, PN 100/CL 600, DN 15-50UNA 39, PN 160/CL 900/CL 1500, DN 15-50

End connectionsUNA 38

Flange EN 1092-1 B2 PN 100Flange ASME B 16.5 CL 600 RFSocket-weld ends to DIN EN 12760Socket-weld ends to ASME B 16.11 CL 3000Butt-weld ends via transition pieces EN 12627, weld joint geometry to ISO 9692-1Code number 1.3 (30° chamfer)Butt-weld ends via transition pieces ASME B 16.25 ASME B 36.10

UNA 39

Flange EN 1092-1 B2 PN 160Flange ASME B 16.5 CL 900 RFButt-weld ends EN 12627, weld joint geometry to ISO 9692-1Code number 1.3 (30° chamfer)Socket-weld ends to DIN EN 12760Socket-weld ends to ASME B 16.11 CL 6000

UNA 38h

UNA 39

UNA 39 Rear view

Data Sheet 818620-01Issue Date: 10/17

Design

UNA 381) UNA 39

Bodyconnec-tion

horizontal ●

vertical ●

angle-type ●

Orifice (O)max. differential pressure in [bar]

Orifice 50Orifice 64Orifice 80

Orifice 80 MAX

Orifice 80Orifice 110Orifice 140

Orifice 140MAX

Controlunit

SIMPLEX2) ● ●

DUPLEX ●

1) It is always possible to convert "h" to "v" design or vice versa to suit the pipework layout by repositioning the body and control unit2) incl. hand-vent valve

Materials of construction

DesignationUNA 38 UNA 39

EN ASTM* EN ASTM*Body 1.5415 A182-F1 1.7335 A182-F12

Flanged, socket-weld, butt-weld ends Flange / butt-weld ends via transition pieces made from

1.54151.7335

A182-F1A182-F12

1.7335 A182-F12

Cover 1.7357 A217-WC6 1.7335 A182-F12

Body gasket Graphite/CrNi Graphite/CrNi Graphite/CrNi Graphite/CrNi

Stud bolts and sleeves 1.7709 1.7709

Hexagon nuts 1.7709 1.7709

Internals Stainless steel Stainless Steel Stainless steel Stainless Steel

* ASTM nearest equivalent grade is stated for guidance only. Physical and chemical properties comply with EN grade.

Pressure and temperature ratingsUNA 38End connection Flange PN 100, socket-weld , butt-weld

Pressure1) p [barg] 100 85.7 69 35.2 28 22.3

Temperature1) T [°C] –10 / 20 300 450 510 520 530

Max. allowable differential pressure [barg] 50 (orifice 50), 64 (orifice 64), 80 (orifice 80)

ΔPMX [psi] 725 (orifice 50), 928 ( orifice 64), 1160 (orifice 80)

Pressure1) p [psig] 1450 1243 1001 510 406 323

Temperature1) T [°F] 14 / 392 572 842 950 968 986

1) Resistance limits for body/cover to EN 1092-1

UNA 38End connection Flange Class 600

Pressure1) p [barg] 100 100 69.9 61.7 59.7 42.5

Temperature1) T [°C] –10 / 20 100 300 400 450 500



Pressure1) p [psig] 1450 1450 1014 895 866 616

Temperature1) T [°F] 14 / 68 212 572 752 842 932


UNA 38 High-temperatureEnd connection Flange PN 100

Pressure1) p [barg] 100 100 100 83.7 51.2 32.4

Temperature1) T [°C] –10 / 20 100 300 450 500 530



Pressure1) p [psig] 1450 1450 1450 1214 742 470

Temperature1) T [°F] 14 / 68 212 572 842 932 986

1) Resistance limits for body/cover to EN 1092-1 (≤ 400°C) and to EN 12516-2 (> 450 °C)

UNA 38 High-temperatureEnd connection Socket-weld end, butt-weld ends via transition pieces

Pressure1) p [barg] 100 100 100 83.7 51.2 32.4

Temperature1) T [°C] –10 / 20 100 350 450 500 530



Pressure1) p [psig] 1552 1552 1552 1214 742 470

Temperature1) T [°F] 14 / 68 212 662 842 932 986


UNA 38 High-temperature

End connection Flange Class 600

Pressure1) p [barg] 100 100 78.2 67.6 51.2 32.4

Temperature1) T [°C] –10 / 20 100 350 450 500 530



Pressure1) p [psig] 1494 1494 1134 980 742 470

Temperature1) T [°F] 14 / 68 212 662 842 932 986

1) Resistance limits for body/cover to EN 1759-1 (≤ 450°C) and to EN 12516-2 (> 500 °C)

44

Orifice and differential pressure

Orifice (AO) Hole diameter [mm] Differential pressure

∆PMX [bar]

UNA 38 UNA 39

50 2.8 – 50

64 2.3 – 64

80 2 1.9 80

80 MAX 6.5 – 80

110 – 1.6 110

140 – 1.4 140

140 MAX – 6.5 140

Pressure and temperature ratingsUNA 39End connection Flange PN 160, Flange CL 1500

Pressure1) p [barg] 160 134.8 104.3 71.6 46.4 37.3

Temperature1) T [°C] –10 / 300 450 500 520 540 550Max. allowable differential pressure [barg] 80 (orifice 80), 110 (orifice 110), 140 (orifice 140)


Pressure1) p [psig] 2320 1955 1512 1038 673 541

Temperature1) T [°F] 14 / 572 842 932 968 1004 1022


UNA 39End connection Socket-weld end, butt-weld end

Pressure1) p [barg] 160 134.8 104.3 71.6 46.4 37.3



Pressure1) p [psig] 2320 1955 1512 1038 673 541

Temperature1) T [°F] 14 / 572 842 932 968 1004 1022

1) Resistance limits for body/cover to EN 12516-2 UNA 39End connection Flange Class 900

Pressure1) p [barg] 155 117 84.6 64.5 41.8 33.6



Pressure1) p [psig] 2248 1697 1227 935 606 487

Temperature1) T [°F] 14 / 212 662 932 968 1004 1022


(O)

Dimensions and weights

UNA 38[mm] 15 20 25 40 50[inch] ½ ¾ 1 1½ 2

Overall length [mm]

Flange EN / DIN (PN 100) L 300 300 300 420 416

Flange to ASME (Class 600) L 300 300 300 421 427

Socket-weld end L 300 300 300 420 420

Butt-weld end L 300 300 300 300 300Butt-weld ends via transition pieces of 1.7335

L 300 300 300 420 420

for pipe 21.3 x 2.0 26.9 x 2.6 33.7 x 2.6 48.3 x 2.6 60.3 x 3.2

Weight with flange [kg] 38 38 38 40 42

with socket-weld, butt-weld, butt-weld ends via transition pieces [kg] 35 35 35 35 35

Dimensions UNA 38

UNA 38h

UNA 38v

UNA 38hUNA 38h, flow from left to right (viewed from cover end)

B 310335

130

L

MADEBY GESTRA

UNA38

TOP

DN PN

�PMX°CPMA TMAbar

bar

SIMPLEX DUPLEX

L1 230

LL

129

97

Dimensions UNA 39

B1 B2

H2

H1

H3

D

150L1

L2

105

360

∅ 2

95

180


UNA 39[mm] 15 25 40 50[inch] ½ 1 1½ 2

Length Flange to EN / L1 215 230 245

[mm] DIN (PN 160) L2 285 300 315

Flange to ASME L1 240 250 280(Class 900/1500) L2 310 320 350

Socket-weld end L1 170 170 170/2451)

Butt-weld end L2 240 240 240/3151)

for pipe 21.3 x 2.0 33.7 x 3.2 48.3 x 3.6 60.3 x 4.0

Weight with flange [kg] 67 70 78

with socket-weld, butt-weld, butt-weld ends via transition pieces

[kg] 65 65 65

1) Socket-weld/butt-weld

100

200

300

400

500

150

90

8010 1102 3 4 6 8 20 30 40 60 8015 140

Capacity ChartsThe chart shows the maximum capacities for hot condensate for the respective orifice.

The capacities are dependent on the differential pressure (working pressure).

The differential pressure is the difference between inlet and outlet pressure and depends among other things on the run of the condensate line.

If the condensate downstream of the trap is lifted, the differ-ential pressure is reduced by 1 bar for 7 m lift.

The maximum admissible differential pressure is dependent on the cross-sectional area of the orifice and the density of the liquid to be discharged.

The charts show the maximum capacities for hot condensate.

The max. capacity of cold water that the steam trap with control unit SIMPLEX or DUPLEX can discharge is: Capacity multiplied by factor F.

Additional cold-water start-up capacity due to thermostatic capsule DUPLEX design (only UNA 38)

∆ρ [barg] 1 2 4 8 12 20 80

Flowrate approx.kg 180 260 380 560 720 950 2100

Factor F = 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2

Durc

hflus

sCa

pici

ty

DifferenzdruckDifferential pressure

DN 15-50 - Orifice 50



DN 50 - Orifice 80 MAX*

UNA 38

Differential pressure

Capa

city

Du

rchfl

uss

Capi

city





DN 50 - Orifice 140 MAX*

UNA 39

* Note that equipment with smaller end connections does not achieve the indicated flowrates.


Capa

city

Capacity Charts

10 1002 3 4 6 8 20 30 40 60 80

100

1000

200

300

400

600

800

Factor F = 1.35 1.45 1.55 1.65 1.75

818620-01/10-2017cm (808711-02) · GESTRA AG · Bremen · Printed in Germany

Supply in accordance with our general terms of business.

Ball Float Steam TrapUNA 38, PN 100/CL 600, DN 15-50UNA 39, PN 160/CL 900/CL 1500, DN 15-50

Inspection & CertificationDocumentation regarding material tests and in-house ex-amination with test report EN10204 available. All inspection requirements have to be stated with the enquiry or order. After supply of the equipment certification cannot be established. Charges and extent of the above mentioned test certificates as well as the different tests confirmed therein are listed in our Price List "Test and Inspection Charges for Standard Equipment". For other tests and inspections than those listed above, please consult us.

Application of European DirectivesPressure Equipment Directive (PED)The equipment conforms to this directive and can be used for the following media:UNA 38, UNA 39■ Fluids of group 1■ Fluids of group 2

ATEX DirectiveThe equipment does not have its own potential ignition source and is not subject to this directive.

When installed, static electricity may arise between the equipment and the connected system. When used in po-tentially explosive atmospheres, the plant manufacturer or plant operator is responsible for discharging or preventing possible static charge.

If it is possible for medium to escape, e.g. through actuating mechanisms or leaks in threaded joints, the plant manufacturer or plant operator must take this into consideration when dividing the area into zones.

Item no. Designation Orifice Stock code #4 Body gasket all 524532

4, 8 Control unit DUPLEX, complete with body gasket

50 560550

64 560551

80 560552

4, 13 Control unit DUPLEX Orifice 80 MAX, complete with body gasket 80 MAX 560553

4, 7 Control unit SIMPLEX, complete with body gasket

50 560554

64 560555

80 560556

4, 12 Control unit SIMPLEX Orifice 80 MAX, complete with body gasket 80 MAX 560557

26, 27 Hand vent valve, complete with gasket all 560559

28, 29 Float-lifting lever, complete with gasket all 560560

6, 45 Bimetallic air vent, compl. with gasket all 560558

GESTRA AG Münchener Straße 77, 28215 Bremen, GermanyTelefon +49 421 3503-0, Telefax +49 421 3503-393E-mail [email protected], Web www.gestra.de

Spare parts for UNA 38

26

Gerät instandsetzen und Ersatzteile einbauen Sie können folgende Bauteile des Geräts bei Verschleiß oder Schäden wechseln:

Ersatzteile UNA 38

28

Ersatzteile UNA 39

Nr. Bezeichnung AO Bestellnummer

17 Gehäusedichtung alle 523031

17, 18 Regelgarnitur, komplett mit Gehäusedichtung 80 560172

110 560171

140 560170

17, 25 Regelgarnitur, komplett mit Gehäusedichtung 140 MAX 560179

20, 46 Hand-Entlüftungsventil, komplett mit Dichtring alle 560178

17, 43, –

Dichtungsset1 alle 560539

1 Enthält:

Gehäusedichtung (17)

Reglerdichtung (43)

Sitzdichtung (–)

Spare parts UNA 39

Item no. Designation Orifice Stock code #17 Body gasket all 523031

17, 18 Control unit, complete with body gasket

80 560172

110 560171

140 560170

17, 25 Control unit, complete with body gasket 140 MAX 560179

20, 46 Hand vent valve, complete with gasket all 560179

17, 43, – Gasket kit1) all 560539

1) Contains: Body gasket (17), gasket for control unit ($§), seat gasket (–)

Ball Float Trap UNA 14, PN 25, UNA 16 Carbon Steel, PN 40, UNA 16A Stainless Steel, PN 40 DN 15, 20, 25

DescriptionUNA 14, UNA 16, UNA 16A are ball float steam traps with rolling ball valve. The steam traps can be used for all operating conditions, as they are unaffected by back pressure. They consist of a body with bolted cover and a control unit. The control unit is freely accessible after removing the cover. It can be completely replaced without having to remove the valve body from the line. A conversion of “h” design to “v” design or vice versa is possible without any problem by repositioning body and control unit. The direction of flow is indicated by an arrow, the position of installation by the word “Top” on the name plate. suitable for large condensate flowrates “h”-design for horizontal lines “v”-design for vertical lines(To convert “h” to “v” design or vice versa turn cover and control unit respectively)

UNA 14, UNA 16, UNA 16AThe following three different types of control units are available: Control unit “SIMPLEX”: level-dependent float control particularly suitable for cold condensate. Control unit “SIMPLEX R”: level- dependent float control with internal vent pipe for continuous air -venting. Control unit “DUPLEX”: float control with temperature-dependent automatic air-venting of saturated steam systems.

UNA 14h / UNA 16h (horizontal) Duplex design

UNA 14v / UNA 16v (vertical) Duplex design

UNA 14 / UNA 16 Simplex design

Pressure/temperature ratings according to type of connection!

*) Depending on orifice (O)

Pressure / Temperature Rating (DIN 1092-1) UNA 14 S.G. (ductile) iron (3 E0), PN 25

Max. allowable pressure PMA [bar] 25 19.4 17.8 15

Max. allowable temperature TMA [°C] -10 / 20 200 250 350

Maximum differential pressure DPMX (inlet pressure minus outlet pressure) [bar] 13*) (4)

Pressure / Temperature Rating (DIN 1092-1) UNA 16 carbon steel (3 E0), PN 40

Max. allowable pressure PMA [bar] 40 30.2 25.8 23.1


Maximum differential pressure DPMX (inlet pressure minus outlet pressure) [bar] 22*) (13 or 4)

Pressure / Temperature Rating UNA 16 carbon steel, CLASS 150

Max. allowable pressure PMA [bar] 17.3 13.8 10.2 6.5


Maximum differential pressure DPMX (inlet pressure minus outlet pressure) [bar] 13*) (4)

Pressure / Temperature Rating (DIN 1092-1) UNA 16A stainless steel (13 E0), PN 40

Max. allowable pressure PMA [bar] 40 35.6 29.3 25.8



Pressure / Temperature Rating UNA 16A (stainless steel), CLASS 150

Max. allowable pressure PMA [bar] 19.3 17.0 14.0 10.2



Space required for opening trap

120

Space required for opening trap

120


DesignBody with bolted cover. The control unit is freely accessible after removing the cover. The control unit can be replaced without having to remove the body from the line.“h”-type for installion in horizontal pipework, flow from left to right (seen from the cover side). Conversion to obtain flow from right to left possible.“v” -type for installation in vertical pipework with downward flow.The traps can be supplied with different control units: Duplex: Float control with temperature-dependent auto-

matic air-venting: GESTRA thermostatic capsule “5N2”. Simplex: Float control specially suited for

the discharge of cold condensates and distillates.

Simplex-R: Float control with internal vent pipe for con-tinuous air-venting.

Optional extra: Purging device (float lifting lever). Vent hole 3/

8“ BSP for connecting an air-balance pipe.

Hand-vent valve 3/8“ BSP.

ConnectionsUNA 14 Flanges: DIN, PN 25 Screwed sockets: BSP and NPT threads

UNA 16, 16A Flanges: DIN, PN 40 and ASME Class 150 Screwed sockets: BSP and NPT threads Socket-weld ends Butt-weld ends

1) Overall length of flanged traps according to DIN EN 26554 (ISO 6554) series 1

UNA 14h / UNA 16h

UNA 14h / UNA 16h, flanged design

UNA 14h, with screwed sockets UNA 16h, with screwed sockets and

socket-weld ends

UNA 16h, with butt-weld ends

Body Cover

156

≈13

070

5712

7

94

L

b

∅ g

∅ k

84

L53

84

L

22

∅ D

Dimensions

Nominal sizes DN [mm][inch]

15½

20¾

251

UNA 14 h/v overall length Screwed BSP/NPT Flanged DIN EN 1092-1

L1) 95150

95150

95160

UNA 16 h/v overall length Screwed sockets Flanged DIN EN 1092-1 Flanged ASME Socket-weld ends Butt-weld ends

L1)

95150150 95200

95150150 95200

95160160 95200

Flange dimensions DIN EN 1092-1

Number of holes

Dbkgl

9516654514 4

105 18 75 58 14 4

115 18 85 68 14 4

Weight Flange Screwed sockets, socket- weld ends, butt-weld ends

[kg]

[kg]

6.0

4.5

6.5

4.5

7.0

4.5

Material of Construction EN number ASTM

Body UNA 14, UNA 16 1.0460 (P250GH) A105

Body UNA 16A (stainless steel) 1.4404 (X2CrNiMo17-12-2) A182-F316L

Cover UNA 14 5.3103 (EN-GJS-400-18-LT) A536 60-40-18 1)

Cover UNA 16 1.0619 (GP240GH) A216-WCB

Cover UNA 16A (stainless steel) 1.4408 (GX5CrNiMo19-11-2) A351-CF8M

Screws UNA 14, UNA 16 1.7225 (42CrMo4) A193-B7

Screws UNA 16A (stainless steel) 1.4980 (X6NiCrTiMoVB25-15-2) –

Float 1.4571 (X6CrNiMoTi17-12-2) AISI 316Ti 1)

Orifice 1.4305 (X8CrNiS18-9) AISI 303 1)

Rolling ball 1.4301 (X5CrNi18-10) A182-F304 1)

Gasket (3) Gaphite-CrNi

Thermostatic capsule 5N2 Hastelloy / stainless steel

Other parts of the control unit, gasket (17) Stainless steel

1) Physical and chemical properties comply with EN grade. ASTM nearest equivalent grade is stated for guidance only.

Item Designation

Gasket 2) A17x 23

Themostatic capsule 5N2, cover gasket

Cover gasket 1) (graphite/CrNi) 67x 77x1

560486

Control unit Duplex, complete

1) Packaged 20 pcs. per box. For smaller quantities please contact your local dealer.2) Packaged 20 pcs. per box. For smaller quantities please contact your local dealer.3) The standard cover does not feature any bores, hence it cannot be retrofitted at a later date.

Stock code

UNA 14 UNA 16UNA 16A S. S.

Stock code

Orifice 4

Orifice 13

Orifice 22

Orifice 4

Orifice 13

Orifice 22

Control unit Simplex R, complete

Orifice 4

Orifice 22

560494

560410

560409

560408

560413

560412

560411

560416

560414

Control unit Simplex, complete

560486

560493

560494

560410

560409

560413

560412

560416L

M

N

D

O 560493

O

O

O

H

F H

J H

Hand-vent valve 3)

Float lifting lever 3)

560676560676

560434

Orifice 13 560415560415

Spare Parts

N

D

O

H

F

MO

H

F

LO

H

F

UNA 14v / UNA 16v

UNA 14h / UNA 16v, flanged design

UNA 14v, with screwed sockets UNA 16v, with screwed sockets and

socket-weld ends

UNA 16v, with butt-weld ends

156≈

130

7057

127

L

∅ g∅ k

84

L

53

L

22

∅ D

L

b

94

Butt-weld ends (UNA 16)

Socket-weld ends (UNA 16)

Screwed sockets (UNA14, UNA 16)

d 2d 1 D 2D 1

b

O

560434on request

560514

Dimensions DN 15 20 25

Socket-weld ends D1

D2

b D1

D2

b D1

D2

b

[mm] 22 32 10 27 38 13 34 44 13

Butt-weld ends d1

d2

d1

d2

d1

d2

[mm] 17 22 22 28 28,5 34

for connecting tube [mm] 21.3 x 2.0 26.9 x 2.3 33.7 x 2.6

1.5 – 0.5


Ball Float Trap UNA 14, PN 25UNA 16 Carbon Steel, PN 40 UNA 16A Stainless Steel, PN 40 DN 15, 20, 25

Additional cold-water start-up capacity due to thermostatic capsule (Duplex design)

Dp [bar] 1 2 3 4 6 8 10 13 18 22

Approx. capacity [kg/h] 180 230 330 410 480 540 600 680 760 840

Capacity Chart

The chart shows the maximum capacity of hot condensate for float-controlled orifices (O). The cold water capacities are: Capacity mul ti pli ed by factor F.The capacities are dependent on the differential pressure (working pressure). The differential pressure is the dif-ference between inlet and outlet pressures and depends among other things on the run of the condensate line. If the condensate downstream of the trap is lifted, the differen-tial pressure (working pressure) is reduced by approximately 1 bar for 7 m (or 2 psi for 3 feet) lift.The maximum admissible differential pressure is depend-ent on the cross-sectional flow area of the orifice and the density of the liquid.The standard designs of the traps for conden sate from steam are available for the following maximum differential pressures:UNA 14: up to 4 or 13 bar.UNA 16, 16A up to 4, 13 or 22 bar.

Orifice (AO) ∅ of hole [mm]

AO 4 4.8

AO 13 3.3

AO 22 2.8


810827-01/10-2017cm ((804219-02) · GESTRA AG · Bremen · Printed in Germany

Capacity Chart

Inspection & CertificationDocumentation regarding material tests and in-house ex- amination with test report EN10204 available. All inspection requirements have to be stated with the enquiry or order. After supply of the equipment certification cannot be established. Charges and extent of the above mentioned test certificates as well as the different tests confirmed therein are listed in our Price List „Test and Inspection Charges for Standard Equipment“. For other tests and inspections than those listed above, please consult us.

Application of European DirectivesPressure Equipment DirectiveThe equipment conforms to this directive and can be used for the following media:

UNA 14, UNA 14P■ Fluids of group 2

UNA 16 and UNA 16A (stainless steel)■ Fluids of group 1■ Fluids of group 2

ATEX-RichtlinieThe equipment does not have its own potential ignition source and is not subject to this directive.


If it is possible for medium to escape, e.g. through actuating mechanisms or leaks in threaded joints, the plant manufac-turer or plant operator must take this into consideration when dividing the area into zones.

Capa

city

of h

ot c

onde

nsat

e [k

g/h]

(Col

d w

ater

cap

acity

[kg/

h] =

con

dens

ate

flow

rate

x fa

ctor

F)

1

Ball Float Steam TrapUNA 45, UNA 46, UNA 46APN 40/Class 300DN 15, 20, 25, 40, 50, 65

DescriptionFloat traps type UNA 45 are designed for removing conden-sate from steam or compressed air.Float traps type UNA 46 and UNA 46A are designed for remo-ving condensate from steam or other gases / gas mixtures.Equipment fitted with control unit SIMPLEX and SIMPLEX-P is operated and controlled by the float and the rolling ball. Equipment with this type of control unit is particularly suitable for cold condensate and cold distillates.The rolling ball of the control unit SIMPLEX-P is made of Perbunan® rubber, which ensures tight shut-off of the seat.Equipment with control unit DUPLEX may also be used for air venting the installation. This type of control unit is parti-cularly suitable for saturated steam systems. The control unit DUPLEX consists of a float operated rolling ball valve and a temperature dependent air-venting facility. Do not expose the membrane regulator capsule of the DUPLEX control unit to superheat conditions above 5 K.By means of the externally adjustable internal bypass it is possible to adjust a bypass passage that flows past the control unit.The equipment must only be used within the allowable pres-sure and temperature limits and only if the chemical and corrosive influences on the equipment are taken into account.

FunctionThe control unit opens the orifice as a function of the liquid level. A rising level results in a proportional opening of the equipment. The max. discharge capacity depends on the orifice size when the ball is completely lifted off its seat and the orifice is fully open.

Optional extrasVent hole and drain holeFloat-lifting lever allows the float to be manually lifted (for purging any dirt away from the seat area)Hand-vent valve allows manual air-venting the pipelineStrainerHorizontal flow direction (hr) from left to right (when viewed from the body end)Control unit SIMPLEX-P with Perbunan® rolling ballExternally adjustable inner bypassSightglass cover PN 16/CL 150Special cover for installing measuring electrodes NRG 16-19 or NRG 16-27

End connectionsFlange EN 1092-1 B1 PN 40Flange ASME B 16.5 Class 150 RF, 300 RFScrewed sockets G: ISO 228/1Screwed sockets NPT: ASME B 16.11Socket-weld ends to DIN EN 12760Socket-weld ends ASME B 16.11 Class 3000Butt-weld ends via transition pieces to EN 12627, welded joint geometry ISO 9692-1 code number 1.3 (30° chamfer)Butt-weld ends via transition pieces ASME B 16.25 ASME B 36.10


v

hl

hr

MaterialsComponent part Type EN ASTM

Body

UNA 45, UNA 46 1.0460 A105

UNA 46A 1.4404 A182-F316L

Cover

UNA 45 sightglasscover / cover forinstalling electrodes

5.3103 A3951)

UNA 46 1.0619 A216-WCB

UNA 46A 1.4408 A351-CF8M

Body gasket, controlunit gasket

all Graphite CrNi

Other components all Stainless steel


UNA 45 hl, UNA 46 hl, UNA 46A hl

UNA 45 hl Sightglass cover

UNA 45 hl Cover for mounting electrodes

The different equipment versions allow you to adjust the flow direction of the equipment to the flow pattern of your installa-tion. The flow arrow must correspond to the direction of the fluid flow. The following positions of installation are possible:

v

hl

hr

v

hl

hr

“v” for installation in vertical pipework with downward flow

“hl” for horizontal left

“hr” for horizontal right

2

1

32 4

28 18 19 20

2713

16

Components UNA 45, UNA 46, UNA 46A Item no. Designation

2 Body

3 Body gasket

4 Control unit SIMPLEX

13 Hand-vent valve

16 Float-lifting lever

18 Control unit DUPLEX

19 Control unit SIMPLEX-P with Perbunan® rolling ball

20 Control unit DUPLEX with externally adjustable internal bypass

27 Gasket

28 Control membrane

Socket spanner

L1

X

X

Externally adjustable internal bypass

X

UNA 45, UNA 46, UNA 46AControl unit DUPLEXwith flanged ends

UNA 45, UNA 46, UNA 46AControl unit DUPLEX

with screwed connections

H2

H1

H

L

B

H2

H1

HL

B


S

Space required for servicing

To remove the cover a withdrawal space S of 240/350 mm (depending on size) is required.If the supplied socket spanner is attached to the equipment an additional clearance of 100 mm is required.

3

Equipment with flanges EN 1092-1 PN 10–40

Nominal size DN 15 (½")

DN 20 (¾")

DN 25 (1")

DN 40 (1½")

DN 50 (2")

DN 65 (2½")

Overall length L [mm (in)] 150 (5.9) 160 (6.3) 230 (9.1) 290 (11.4)

B [mm (in)]Standard coverSightglass coverCover for mounting electrodes

171 (6.7)213 (8.4)186 (7.3)

287 (11.3)333 (13.1)306 (12.0)

H1 [mm (in)] 60 (2.4) 107 (4.2)

H2 [mm (in)] 90 (3.5) 1) 151 (5.9) 1)

Total height H [mm (in)] 150 (5.9) 1) 258 (10.2) 1)

Width L1 [mm (in)] 110 (4.3) 2) 170 (6.7) 2)

X [mm (in)] 13 (0.5)

Weight [kg]Standard coverSightglass coverCover for mounting electrodes

6.89.78.5

7.310.29.0

7.810.79.5

24.830.528.0

26.231.929.4

28.634.331.8

Weight [lb]Standard coverSightglass coverCover for mounting electrodes

15.021.418.7

16.122.519.8

17.223.620.9

54.767.261.7

57.870.364.8

63.175.670.1

1) If equipped with hand-vent valve add 25 mm (1 in).2) If equipped with float-lifting lever or bypass add 35 mm (1.4 in).

Equipment with flange ASME B16.5 Class 150/300


DN 20 (¾")

DN 25 (1")

DN 40 (1½")

DN 50 (2")

DN 65 (2½")

Overall length L [mm (in)] 150 (5.9) 160 (6.3) 241 (9.5) 267 (10.5) 292 (11.5)

B [mm (in)]Standard coverSightglass coverCover for mounting electrodes

171 (6.7)213 (8.4)186 (7.3)

287 (11.3)333 (13.1)306 (12.0)

H1 [mm (in)] 60 (2.4) 107 (4.2)

H2 [mm (in)] 90 (3.5) 1) 151 (5.9) 1)


Width L1 [mm (in)] 110 (4.3) 2) 170 (6.7) 2)

X [mm (in)] 13 (0.5)

Weight Class 150


6.29.17.9

6.69.58.3

7.210.18.9

23.829.527.0

25.931.629.1

29.435.132.6


13.720.117.4

14.620.918.3

15.922.319.6

52.565.056.2

57.169.760.8

64.877.468.6

Weight Class 300


6.69.58.3

7.410.39.1

8.211.19.9

26.031.729.2

27.533.230.7

31.136.834.3


14.620.918.3

16.322.720.1

18.124.521.8

57.369.964.4

60.673.267.7

68.681.175.6



4

Equipment with socket-weld end, butt-weld end via transition pieces


DN 20 (¾")

DN 25 (1")

DN 40 (1½")

DN 50 (2")

DN 65 (2½")

Overall length L [mm (in)]95 (3.7) 165 (6.5) 267 (10.5) 292 (11.5)

(Socket-weld end) (Butt-weld end via transition pieces EN, ASME)B [mm (in)]Standard coverSightglass coverCover for mounting electrodes

171 (6.7)213 (8.4)186 (7.3)

287 (11.3)333 (13.1)306 (12.0)

H1 [mm (in)] 60 (2.4) 107 (4.2)

H2 [mm (in)] 90 (3.5) 1) 151 (5.9) 1)


Width L1 [mm (in)] 110 (4.3) 2) 170 (6.7) 2)

X [mm (in)] 13 (0.5)Weight [kg]Standard coverSightglass coverCover for mounting electrodes

5.38.27.0

5.28.16.9

21.226.924.4

21.927.625.1

24.630.327.8


11.718.115.4

11.517.915.2

46.759.353.8

48.360.855.3

54.567.061.5


Equipment with screwed socket


DN 20 (¾")

DN 25 (1")

DN 40 (1½")

DN 50 (2")

Overall length L [mm (in)] 95 (3.7) 165 (6.5)B [mm (in)]Standard coverSightglass coverCover for mounting electrodes

171 (6.7)213 (8.4)186 (7.3)

287 (11.3)333 (13.1)306 (12.0)

H1 [mm (in)] 60 (2.4) 107 (4.2)

H2 [mm (in)] 90 (3.5) 1) 151 (5.9) 1)


Width L1 [mm (in)] 110 (4.3) 2) 170 (6.7) 2)


5.38.27.0

5.28.16.9

5.18.06.8

21.226.924.4

20.926.624.1


11.718.115.4

11.517.915.2

11.217.615.0

46.759.353.8

46.158.653.1


Dimensions and weights – continued –

Equipment with butt-weld end via transition pieces


DN 20 (¾")

DN 25 (1")

DN 40 (1½")

DN 50 (2")

DN 65 (2½")

Overall length L [mm (in)] 200 (7.9) 241 (9.5) 267 (10.5) 292 (11.5)B [mm (in)]Standard coverSightglass coverCover for mounting electrodes

171 (6.7)213 (8.4)186 (7.3)

287 (11.3)333 (13.1)306 (12.0)

H1 [mm (in)] 60 (2.4) 107 (4.2)

H2 [mm (in)] 90 (3.5) 1) 151 (5.9) 1)


Width L1 [mm (in)] 110 (4.3) 2) 170 (6.7) 2)


5.68.57.3

5.78.67.4

21.327.024.5

21.627.324.8

22.528.225.7


12.318.716.1

12.619.016.3

47.059.554.0

47.660.254.7

49.662.256.7


5

Pressure & temperature ratingsThe values indicated in the following tables apply to standard equipment.Note that the type of end connection used may restrict the use of the equipment to below the pressure/temperature limits quoted.All equipment specific values are indicated on the nameplate.

Limiting conditions for UNA 45 and UNA 46: Flange PN 40, screwed sockets G, butt-weld ends EN Pressure1) p [barg] 40 37.1 33.3 27.6 25.7 13.12)

Temperature1) T [°C] –10/20 100 200 300 350 4502)

Max. admissible differential pressureΔPMX

[bar] 2, 4, 8, 13, 22, 32

[psi] 29, 58, 116, 188, 320, 465

Admissible service temperature Control unit DUPLEX: Saturated steam temperature plus 5 K

Pressure1) p [psig] 580 538 483 400 373 1902)

Temperature1) T [°F] 14/68 212 392 572 662 8422)

1) Resistance limits of body/cover to EN 1092-12) Not for UNA 45

Limiting conditions for UNA 45 and UNA 46: Flange Class 150Pressure1) p [barg] 19.6 17.7 13.8 10.2 8.6 5.52)

Temperature1) T [°C] –29/20 100 200 300 345 4252)


[bar] 2, 4, 8, 13 (19,6 bar with orifice (AO) 22, 32)

[psi] 29, 58, 116, 188 (284 psi with orifice (AO) 22, 32)


Pressure1) p [psig] 285 260 200 140 125 802)

Temperature1) T [°F] – 20/100 200 400 600 650 8002)

1) Resistance limits of body/cover to ASME B 16.52) Not for UNA 45

Limiting conditions for UNA 45 and UNA 46:Flange Class 300, screwed socket NPT, socket-weld end, butt-weld end ASME Pressure1) p [barg] 51.1 46.6 43.8 39.8 37.8 28.82)

Temperature1) T [°C] –29/20 100 200 300 345 4252)


[bar] 2, 4, 8, 13, 22, 32

[psi] 29, 58, 116, 188, 320, 465


Pressure1) p [psig] 740 280 635 570 550 4102)

Temperature1) T [°F] – 20/100 200 400 600 650 8002)

1) Resistance limits of body/cover to ASME B 16.52) Not for UNA 45

Limiting conditions for UNA 45 with sightglass cover: flange PN 16, screwed sockets G, butt-weld ends EN Pressure1) p [barg] 16.0 14.8 14.0 13.3 12.3

Temperature1) T [°C] –10/20 100 150 200 240


[bar] 2, 4, 8, 13, (16 bar with orifice (AO) 22, 32)

[psi] 29, 58, 116, 188, (230 psi with orifice (AO) 22, 32)


Pressure1) p [psig] 232 215 203 193 178

Temperature1) T [°F] 14/68 212 302 392 464

1) Resistance limits of body/cover to EN 1092-1

Operating dataEquipment with sightglass cover:PN 16: max. service temperature 240 °C at 12.3 bar service pressureClass 150: max. service temperature 240 °C at 12.4 bar service pressure. If the pH value is above 9.0 and the fluid temperature exceeds 200 °C the glass will wear down faster.Equipment with measuring electrode NRG 16-19 or NRG 16-27,

PN 40/Class 300: max. service temperature 238 °C at 32 bar service pressure

Equipment with control unit SIMPLEX-P with Perbunan rolling ball: max. service temperature 40 °C at ΔPMX 16 bar.Equipment with control unit DUPLEX: The max.service temperature corresponds to the saturated steam temperature +5 K.

6

Pressure & temperature ratings – continued –

Limiting conditions for UNA 45 with sightglass cover:flange Class 150, screwed sockets NPT, socket-weld end, butt-weld end ASME Pressure1) p [barg] 19.6 17.7 15.8 13.8 12.4

Temperature1) T [°C] –29/20 100 150 200 240


[bar] 2, 4, 8, 13, (19,6 bar with orifice (AO) 22, 32)

[psi] 29, 58, 116, 188, (284 psi with orifice (AO) 22, 32)


Pressure1) p [psig] 285 260 230 200 180

Temperature1) T [°F] –20/100 200 300 400 4651) Resistance limits of body/cover to ASME B 16.5

Limiting conditions for UNA 46A: flange PN 40, screwed sockets G, butt-weld ends EN Pressure1) p [barg] 40.0 37.9 31.8 27.6 25.7 25

Temperature1) T [°C] –10/20 100 200 300 4002) 4502)


[bar] 2, 4, 8, 13, 22, 32

[psi] 29, 58, 116, 188, 320, 465


Pressure1) p [psig] 580 550 461 400 373 363

Temperature1) T [°F] 14/68 212 392 572 752 842

1) Resistance limits of body/cover to EN 1092-12) If the operating temperatures exceed 300 °C intercrystalline corrosion may occur. Do not subject the equipment to operating

temperatures higher than 300° C unless intercrystalline corrosion can be ruled out.

Limiting conditions for UNA 46A: flange Class 150Pressure1) p [barg] 15.9 13.3 11.2 10.0 6.5 5.5

Temperature1) T [°C] –29/20 100 200 300 4002) 4252)


[bar] 2, 4, 8, 13, (15,9 bar with orifice (AO) 22, 32)

[psi] 29, 58, 116, 188 (230 psi with orifice (AO) 22, 32)


Pressure1) p [psig] 230 195 160 140 95 80

Temperature1) T [°F] – 20/100 200 400 600 750 800

1) Resistance limits of body/cover to ASME B 16.52) If the operating temperatures exceed 300 °C intercrystalline corrosion may occur. Do not subject the equipment to operating


Limiting conditions for UNA 46A:flange Class 300, screwed socket NPT, socket-weld end, butt-weld end ASME Pressure1) p [barg] 41.4 34.8 29.2 26.1 24.3 23.9

Temperature1) T [°C] –29/20 100 200 300 4002) 4252)


[bar] 2, 4, 8, 13, 22, 32

[psi] 29, 58, 116, 188, 320, 465


Pressure1) p [psig] 600 510 420 370 355 345

Temperature1) T [°F] –20/100 200 400 600 750 800

1) Resistance limits of body/cover to ASME B 16.52) If the operating temperatures exceed 300 °C intercrystalline corrosion may occur. Do not subject the equipment to operating


Operating dataEquipment with sightglass cover:PN 16: max. service temperature 240 °C at 12.3 bar service pressureClass 150: max. service temperature 240 °C at 12.4 bar service pressure. If the pH value is above 9.0 and the fluid temperature exceeds 200 °C the glass will wear down faster.Equipment with measuring electrode NRG 16-19 or NRG 16-27,

PN 40/Class 300: max. service temperature 238 °C at 32 bar service pressure

Equipment with control unit SIMPLEX-P with Perbunan rolling ball: max. service temperature 40 °C at ΔPMX 16 bar.Equipment with control unit DUPLEX: The max.service temperature corresponds to the saturated steam temperature +5 K.

7

Capacity ChartThe chart shows the maximum capacities for hot condensate for the various orifices.The capacities are dependent on the differential pressure (working pressure). The differential pressure is the difference between inlet and outlet pressure and depends among other things on the run of the condensate line. If the condensate downstream of the trap is lifted, the differential pressure is reduced by approximately 1 bar for 7 m lift.The max. admissible differential pressure is a function of the cross-sectional area of the orifice and the density of the fluid to be discharged.The graphs in the chart show the hot water flowrates that the steam traps UNA 45, UNA 46 and UNA 46A can discharge with virtually no banking up.The cold water capacities of steam traps with control unit SIMPLEX / DUPLEX are: Capacity multiplied by factor F.

Capacity Chart

DN 40-65 - AO 2

DN 40-65 - AO 4

DN 40-65 - AO 8

DN 40-65 - AO 13

DN 40-65 - AO 22

DN 40-65 - AO 32

DN 15-25 - AO 2

DN 15-25 - AO 4

DN 15-25 - AO 8

DN 15-25 - AO 13

DN 15-25 - AO 22

DN 15-25 - AO 32

100,1 200,2 0,3 0,4 0,60,8 3254321 86[bar]

[psi]46520 30010 1006 608 803 304 40 20021,5

100

4000

5000

6000

3000

2000

1000

7000

600

800

400

500

300

200

[kg/h][lb/h]

4000

3000

2000

1000

6000

8000

600

400

800

300

200

10000

15000


Cap

acity

Dur

chflu

ss

The max. differential pressure Δ PMX of the equipment depends on the type of orifice (AO) used.

Orifice ΔPMX [bar]Diameter of bore [mm]

DN 15-25 DN 40-65

2 2 8 15.0

4 4 6 12.5

8 8 4.8 10.0

13 13 4.1 8.5

22 22 3.5 7.0

32 32 3.0 6.5

Factor F = 1 1.1 1.18 1.2 1.3 1.4 1.48 1.53

8

3 4

28 18 19 20

2713 31

16

12

32

Inspection & CertificationDocumentation regarding material tests and in-house examination with test report to EN 10204 available at extra cost. All inspection requirements have to be stated with the enquiry or order. After supply of the equipment certification cannot be established. Charges and extent of the above mentioned test certificates as well as the different tests confirmed therein are listed in our Price List “Test and In-spection Charges for Standard Equipment”. For other tests and inspections please consult us.

Application of European Directives Pressure Equipment Directive

The equipment conforms to this directive and can be used for the following media:

UNA 45Fluids of group 2

UNA 46 and UNA 46AFluids of group 1Fluids of group 2

ATEX Directive

The equipment does not have its own potential ignition source and is not subject to this directive.



819345-03/03-2017cm (808923-02) · GESTRA AG · Bremen · Printed in Germany


Ball Float Steam TrapUNA 45, UNA 46, UNA 46APN 40/Class 300DN 15, 20, 25, 40, 50, 65

Spare Parts

Item no. Designation Orifice

DN 15-25 DN 40-65

Standardcover

Cover formountingelectrodes

Sightglasscover

Standardcover

Cover formountingelectrodes

Sightglasscover

Stock code #

3, 4, 27

Control unitSIMPLEX, cpl. withbody gasket andgasket for controlunit

2 560656 560669

4 560657 560670

8 560658 560671

13 560659 560672

22 560660 – 560673 –

32 560661 – 560674 –

3, 19, 27

Control unitSIMPLEX-P, cpl.with body gasketand gasket forcontrol unit

16 560662 –

3, 18,27, 28

Control unit DUPLEX, cpl. withbody gasket andgasket for controlunit

2 560650 560663

4 560651 560664

8 560652 560665

13 560653 560666

22 560654 – 560667 –

32 560655 – 560668 –

3, 28Membrane regulator capsule 5N2, cpl. with body gasket

all 560494 560687

12, 13Hand vent valve,complete withgasket

all 560676 – 560676 560676 – 560676

12, 16Float-lifting lever,complete withgasket

all 560677 560678

3 Body gasket1) all 560493 560680

12

Joint ring for sealing plug 3/8", manual float-liftinglever, hand-ventvalve or bypass1)

all 5604862) or 5605142)

27 Gasket for control unit1) all 560681 560682

3, 12, 27 Gasket set3) all 560683 – 560684 –

31, 32 Sightglass, incl.gasket all – 560685 – 560480

1 Delivery quantity: 20 pcs.2 560486: Material 1.4301

560514: Material 1.45713 Comprises:

4 joint rings 3/8" 1 joint ring ¼" 1 body gasket

1 gasket for control unit


1

Ball Float Steam TrapUNA 45 MAX, UNA 46 MAX, UNA 46A MAXPN 40/Class 300DN 40, 50, 65

DescriptionUNA 45 MAX, UNA 46 MAX and UNA 46A MAX are items of equipment for the steam process designed for the effective removal of condensate from steam.The ball float opens the orifice as a function of the liquid level. A rising level results in a proportional opening of the equipment. The max. discharge capacity depends on the size of the fully open orifice (O).As the float rises with the liquid level it pulls the nozzle stem off the pilot valve, allowing a small amount of fluid to flow through the pilot valve.The fluid compresses the bellows of the control unit and, as a consequence, the discharge orifice is completely uncovered.Equipment with control unit SIMPLEX is particularly suitable for cold condensates and superheated steam.Equipment with control unit DUPLEX may also be used for air venting the installation. The control unit DUPLEX consists of a float and a temperature dependent air-venting facility. The air venting is controlled by the membrane regulator. Equipment with this type of control unit is particularly suitable for saturated steam systems. Do not expose the membrane regulator capsule of the DUPLEX control unit to superheat conditions above 5 K.The optional float-lifting lever allows you to lift the float manually.The optional hand-vent valve allows you to air vent the pipe manually.The equipment must only be used within the allowable pressure and temperature limits and only if the chemical and corrosive influences on the equipment are taken into account.

FunctionThe control unit opens the orifice as a function of the liquid level. A rising level results in a proportional opening of the equipment. The max. discharge capacity depends on the orifice size when the ball is completely lifted off its seat and the orifice is fully open.

Optional extrasStandard cover with two lateral connections (with sealings plugs) for later attachment of measuring electrode and/or manual float-lifting leverFloat-lifting lever allows the float to be manually lifted (for purging any dirt away from the seat area)Hand-vent valve allows manual air-venting the pipelineHorizontal flow direction (hr) from left to right (when viewed from the body end)Sightglass cover PN 16/CL 150Special cover for mounting measuring electrode NRG 16-19 or NRG 16-27


v

End connectionsFlange EN 1092-1 B1 PN 40Flange ASME B 16.5 Class 150 RF, 300 RFScrewed sockets G: ISO 228/1Screwed sockets NPT: ASME B 16.11Socket-weld ends to DIN EN 12760Socket-weld ends ASME B 16.11 Class 3000Butt-weld ends via transition pieces to EN 12627, welded joint geometry ISO 9692-1 code number 1.3 (30° chamfer)Butt-weld ends via transition pieces ASME B 16.25 ASME B 36.10

UNA 45hl MAX, UNA 46hl MAX, UNA 46Ahl MAX

UNA 45v MAX with cover for mounting electrode

UNA 45v MAX with sightglass cover

The different equipment versions allow you to adjust the flow direction of the equipment to the flow pattern of your installa-tion. The flow arrow must correspond to the direction of the fluid flow. The following positions of installation are possible:

hr

hl

Design "v" for installation in vertical pipework with down-ward flow

"hl" for horizontal left

"hr" for horizontal right

Materials

Component part Type EN ASTM

BodyUNA 45 MAX, UNA 46 MAX 1.0460 A105

UNA 46A MAX 1.4404 A182-F316L

Cover

UNA 45 MAX, sightglass coverCover for mounting electrodes 5.3103 A3951)

UNA 46 MAX 1.0619 A216-WCB

UNA 46A MAX 1.4408 A351-CF8M

Body gasket, controller gasket, adapter gasket, gasket for reflexion water level gauge all Graphite CrNi

Membrane regulator capsule all Hastelloy / stainless steel

Other components all Stainless steel


2

Explosion view of UNA 45 MAX, UNA 46 MAX, UNA 46A MAX Item no. Designation

2 Body

3 Body gasket

22 Adapter gasket

6 Control unit (shown here: control unit DUPLEX)

8 Cover (shown here: standard cover)

12 Hand vent valve

15 Float-lifting lever

30 Socket spanner

37 Adapter for SIMPLEX version

5 Adapter for DUPLEX version


UNA 45 MAX, UNA 46 MAX, UNA 46A MAXControl unit DUPLEX

Flanged ends

L1L

H2

H

X

H1

B

Space required for servicingTo remove the cover a withdrawal space S of 270 mm is required.If the supplied socket spanner is attached to the equipment an additional clearance of 100 mm is required.

S

3


Equipment with flange ASME CL150 and CL300Class 150 Class 300

Nominal size Type of cover DN 40 (1½")

DN 50 (2")

DN 65 (2½")

DN 40 (1½")

DN 50 (2")

DN 65 (2½")

L [mm (in)] All 241 (9.5) 267 (10.5) 292 (11.5) 241 (9.5) 267 (10.5) 292 (11.5)

B [mm (in)] Standard cover 328 (12.9)

Sightglass cover 370 (14.6) –

Cover for mounting electrodes 343 (13.5)

H1 [mm (in)] All 98 (3.9)

H2 [mm (in)] All 182 (7,2)1)

H [mm (in)] All 280 (11,0)1)

L1 [mm (in)] All 160 (6,3)2)

X [mm (in)] All 13 (0.5)

Weight [kg] Standard cover 32.6 34.6 38.2 34.8 36.2 39.9

Sightglass cover 36.5 38.5 42.1 –

Cover for mounting electrodes 34.5 36.5 40.1 36.7 38.1 41.7

Weight [lb] Standard cover 71.9 76.3 84.2 76.7 79.8 88.0

Sightglass cover 80.5 84.9 92.8 –

Cover for mounting electrodes 76.1 80.5 88.4 80.9 84.0 91.9

1) If equipped with hand-vent valve add 25 mm (1 in).2) If equipped with float-lifting lever add 35 mm (1.4 in).

Equipment with flanges EN 1092-1 PN 10–40


DN 50 (2")

DN 65 (2½")

L [mm (in)] All 230 (9.1) 290 (11.4)


Sightglass cover 370 (14.6)

Cover for mounting electrodes 343 (13.5)

H1 [mm (in)] All 98 (3.9)

H2 [mm (in)] All 182 (7.2)1)

H [mm (in)] All 280 (11.0)1)

L1 [mm (in)] All 160 (6.3)2)

X [mm (in)] All 13 (0.5)

Weight [kg] Standard cover 33.6 35.1 37.4

Sightglass cover 37.5 39.0 41.3

Cover for mounting electrodes 35.5 36.9 39.3

Weight [lb] Standard cover 74.1 77.4 82.5

Sightglass cover 82.7 86.0 91.0

Cover for mounting electrodes 78.3 81.3 86.6


4

Dimensions and weights - continued -

Equipment with screwed socket


DN 50 (2")

L [mm (in)] All 165 (6.5)


Sightglass cover 370 (14.6)Cover for mounting electrodes 343 (13.5)

H1 [mm (in)] All 98 (3.9)

H2 [mm (in)] All 182 (7,2)1)

H [mm (in)] All 280 (11,0)1)

L1 [mm (in)] All 160 (6,3)2)

X [mm (in)] All 13 (0.5)

Weight [kg] Standard cover 30.1 29.6

Sightglass cover 34.0 33.5Cover for mounting electrodes 32.0 31.4

Weight [lb] Standard cover 66.4 65.3

Sightglass cover 75.0 73.9Cover for mounting electrodes 70.5 69.2


Equipment with socket-weld ends


DN 50 (2")

DN 65 (2½")

L [mm (in)] All 165 (6.5) 267 (10.5) 292 (11.5)



H1 [mm (in)] All 98 (3.9)

H2 [mm (in)] All 182 (7,2)1)

H [mm (in)] All 280 (11,0)1)

L1 [mm (in)] All 160 (6,3)2)

X [mm (in)] All 13 (0.5)


Sightglass cover 33.8 34.8 36.1Cover for mounting electrodes 31.7 32.8 34.1




Equipment with butt-weld end via transition pieces


DN 50 (2")

DN 65 (2½")

L [mm (in)] All 241 (9.5) 267 (10.5) 292 (11.5)



H1 [mm (in)] All 98 (3.9)

H2 [mm (in)] All 182 (7,2)1)

H [mm (in)] All 280 (11,0)1)

L1 [mm (in)] All 160 (6,3)2)

X [mm (in)] All 13 (0.5)






5

Pressure & temperature ratingsThe values indicated in the following tables apply to standard equipment.Note that the type of end connection used may restrict the use of the equipment to below the pressure/temperature limits quoted.All equipment specific values are indicated on the nameplate.

Limiting conditions for UNA 45 MAX and UNA 46 MAX: Flange PN 40, screwed socket GPressure1) p [barg] 40 37.1 33.3 27.6 25.7 13.12)

Temperature1) T [°C] -10/20 100 200 300 350 4502)


[barg] 4, 8, 13, 22, 32

[psi] 58, 116, 188, 320, 465


Pressure1) p [psig] 580 538 483 400 373 1902)

Temperature1) T [°F] 14/68 212 392 572 662 8422)

1) Resistance limits for body/cover to EN 1092-12) Not for UNA 45 MAX

Limiting conditions for UNA 45 MAX and UNA 46 MAX: Flange Class 150Pressure1) p [barg] 19.6 17.7 13.8 10.2 8.6 5.52)

Temperature1) T [°C] -29/20 100 200 300 345 4252)


[barg] 4, 8, 13 (19.6 barg with orifice 22, 32)

[psi] 58, 116, 188, (284 psi with orifice 22, 32)


Pressure1) p [psig] 285 260 200 140 125 802)

Temperature1) T [°F] – 20/100 200 400 600 650 8002)

1) Resistance limits for body/cover to ASME B 16.52) Not for UNA 45 MAX

Limiting conditions for UNA 45 MAX and UNA 46 MAX:Flange Class 300, screwed socket NPT, socket-weld end, butt-weld endPressure1) p [barg] 51.1 46.6 43.8 39.8 37.8 28.82)

Temperature1) T [°C] -29/20 100 200 300 345 4252)


[barg] 4, 8, 13, 22, 32

[psi] 58, 116, 188, 320, 465


Pressure1) p [psig] 740 680 635 570 550 4102)

Temperature1) T [°F] – 20/100 200 400 600 650 8002)

1) Resistance limits for body/cover to ASME B 16.52) Not for UNA 45 MAX

Limiting conditions for UNA 45 MAX with sightglass cover: Flange PN 16, screwed socket GPressure1) p [barg] 16.0 14.8 14.0 13.3 12.3

Temperature1) T [°C] -10/20 100 150 200 240


[barg] 4, 8, 13 (16 barg with orifice 22, 32)



Pressure1) p [psig] 232 215 203 193 178

Temperature1) T [°F] 14/68 212 302 392 464


Operating dataEquipment with sightglass cover:PN16: max. service temperature 240 °C at a service pressure of 12.3 bar Class 150: max. service temperature 240 °C at a service pressure of 12.4 barIf the pH value is above 9.0 and the fluid temperature exceeds 200° C the glass will wear down faster.Equipment with measuring electrode NRG 16-19 or NRG 16-27, PN 40/Class 300: max. service temperature 238° C at 32 bar service pressure

The max. differential pressure Δ PMX of the equipment depends on the type of orifice (O) used.

Orifice ... MAX

ΔPMX [barg]

Diameter of bore[mm]

4 4 27.5

8 8 19.4

13 13 15.3

22 22 11.7

32 32 9.7

Equipment with control unit DUPLEX: max. service tempera-ture corresponds to the saturation temperature +5K.

6

Limiting conditions - continued -

Limiting conditions for UNA 45 MAX with sightglass cover:Flange Class 150, screwed socket NPT, socket-weld end, butt-weld endPressure1) p [barg] 19.6 17.7 15.8 13.8 12.4

Temperature1) T [°C] -29/20 100 150 200 240





Pressure1) p [psig] 285 260 230 200 180

Temperature1) T [°F] -20/100 200 300 400 465

1) Resistance limits for body/cover to ASME B 16.5

Limiting conditions for UNA 46A MAX: Flange PN 40, screwed socket GPressure1) p [barg] 40.0 37.9 31.8 27.6 25.7 25

Temperature1) T [°C] -10/20 100 200 300 4002) 4502)


[barg] 4, 8, 13, 22, 32

[psi] 58, 116, 188, 320, 465


Pressure1) p [psig] 580 550 461 400 373 363

Temperature1) T [°F] 14/68 212 392 572 752 842

1) Resistance limits for body/cover to EN 1092-12) If the operating temperatures exceed 300 °C intercrystalline corrosion may occur. Do not subject the equipment to operating


Limiting conditions for UNA 46A MAX: Flange Class 150Pressure1) p [barg] 15.9 13.3 11.2 10.0 6.5 5.5

Temperature1) T [°C] -29/20 100 200 300 4002) 4252)





Pressure1) p [psig] 230 195 160 140 95 80

Temperature1) T [°F] – 20/100 200 400 600 750 800

1) Resistance limits for body/cover to ASME B 16.52) If the operating temperatures exceed 300 °C intercrystalline corrosion may occur. Do not subject the equipment to operating


Limiting conditions for UNA 46A MAX:Flange Class 300, screwed socket NPT, socket-weld end, butt-weld endPressure1) p [barg] 41.4 34.8 29.2 26.1 24.3 23.9

Temperature1) T [°C] -29/20 100 200 300 4002) 4252)


[barg] 4, 8, 13, 22, 32

[psi] 58, 116, 188, 320, 465


Pressure1) p [psig] 600 510 420 370 355 345

Temperature1) T [°F] -20/100 200 400 600 750 800

1) Resistance limits for body/cover to ASME B 16.52) If the operating temperatures exceed 300 °C intercrystalline corrosion may occur. Do not subject the equipment to operating


Operating dataEquipment with sightglass cover:PN16: max. service temperature 240 °C at a service pressure of 12.3 barClass 150: max. service temperature 240 °C at a service pressure of 12.4 barIf the pH value is above 9.0 and the fluid temperature exceeds 200° C the glass will wear down faster.Equipment with measuring electrode NRG 16-19 or NRG 16-27, PN 40/Class 300: max. service temperature 238° C at 32 bar service pressure

The max. differential pressure Δ PMX of the equipment depends on the type of orifice (O) used.

Orifice ... MAX

ΔPMX [barg]

Diameter of bore[mm]

4 4 27.5

8 8 19.4

13 13 15.3

22 22 11.7

32 32 9.7

Equipment with control unit DUPLEX: max. service tempera-ture corresponds to the saturation temperature +5K.

7

Capacity ChartThe chart shows the maximum capacities for hot condensate for the respective orifice.The capacities are dependent on the differential pressure (working pressure). The differential pressure is the difference between inlet and outlet pressure and depends among other things on the run of the condensate line. If the condensate downstream of the trap is lifted, the differential pressure is reduced by 1 bar for 7 m lift.The maximum admissible differential pressure is dependent on the cross-sectional area of the orifice and the density of the liquid to be discharged.The charts show the maximum capacities for hot and cold condensate.

Capacity chart for hot condensate

DN 40-65 - Orifice 32 MAX

DN 40-65 - Orifice 22 M

AX

DN 40-65 - Orifice 13 MAXDN 40-65 - O

rifice 4 MAX


100,1 200,2 0,3 0,4 0,6 0,8 3254321 86[bar]

[psi]46520 30010 1006 608 803 304 40 20021,5

1000

30000

20000

10000

6000

8000

4000

5000

3000

2000

[kg/h][lb/h]

40000

30000

20000

10000

60000

6000

4000

8000

3000

2000


Cap

acity

Capacity chart for cold water


DN 40-65 - Orifi

ce 22 MAX

DN 40-65 - Orifi

ce 13 MAX


DN 40-65 - Orifi

ce 8 MAX

100,1 200,2 0,3 0,4 0,6 0,8 3254321 86[bar]

[psi]46520 30010 1006 608 803 304 40 20021,5

1000

30000

20000

10000

6000

8000

4000

5000

3000

2000

[kg/h][lb/h]

40000

30000

20000

10000

60000

6000

4000

8000

3000

2000


Cap

acity

8

3 22 629

1231

153026

3314

Inspection & CertificationDocumentation regarding material tests and in-house ex-amination with test report EN10204 available. All inspection requirements have to be stated with the enquiry or order. After supply of the equipment certification cannot be established. Charges and extent of the above mentioned test certificates as well as the different tests confirmed therein are listed in our Price List "Test and Inspection Charges for Standard Equipment". For other tests and inspections than those listed above, please consult us.

Application of European Directives Pressure Equipment Directive The equipment conforms to this directive and can be used for the following media:

UNA 45 MAX ◗ Fluids of group 2

UNA 46 MAX and UNA 46A MAX ◗ Fluids of group 1 ◗ Fluids of group 2

ATEX Directive The equipment does not have its own potential ignition source and is not subject to this directive.



819346-02/05-2017cm (808924-02) ·GESTRA AG · Bremen · Printed in Germany


Ball Float Steam TrapUNA 45 MAX, UNA 46 MAX, UNA 46A MAXPN 40/Class 300DN 40, 50, 65

Spare Parts

Item no. Designation OrificeStock code #

Standard cover Sightglass cover Cover for mounting electrodes

3, 62226

Control unit, complete with body gasket, adapter gasket and gasket for control unit

4 560690

8 560691

13 560692

22 560693 – 560693

32 560694 – 560694

3, 29 Membrane regulator capsule 5N2, cpl. with body gasket all 560687

12, 1430

Hand-vent valve, cpl. with joint ring and socket spanner all 560676 –

14, 1530

Float lifting lever, cpl. with joint ring and socket spanner all 560678

3 Body gasket1) all 560680

22 Adapter gasket1) all 560682

14Gasket for sealing plug3/8", float-lifting lever, hand-vent valve1)

all 5604862) or 5605142)

26 Gasket for control unit3) all 560547

3, 1422, 26 Gasket set4) all 560684 – 560684

30 Socket spanner all 560700

31, 33 Reflexion water level gauge with 2 gaskets all – 560480 –

1 Delivery quantity: 20 pcs2 560486: Material 1.4301,

560514: Material 1.45713 Delivery quantity: 10 pcs4 Contains: 4 gaskets 3/8" 1 body gasket 1 gasket for control unit 1 adapter gasket


Float Trap UNA 27 h PN 63, DN 25, 40, 50 mm (1“, 1½“, 2“)

DescriptionBall float trap with rolling ball valve and Duplex control (ther-mostatic bellows for automatic air venting) for draining large condensate flowrates from steam systems. With non-return valve and drain plug.With Simplex control (without bellows) and hand vent valve for the discharge of cold condensates or distillates and for draining superheated steam, gas or compressed-air lines.Body with bolted cover. Control unit easily re placed without removing trap from the line.

On request: with float-lifting lever Hand vent valve (for Duplex design)

Space required for opening trap 50 mm

DN 2

5: a

ppro

x. 1

70.5

mm

DN

40:

app

rox.

285

mm

Hand vent valve Float lifting lever

Dimensions and Weights

Nominal sizes DN

[mm][in] 25

1401½

502

Overall length in mm L Flanged DIN PN 63 Flanged ASME 300 RF Flanged ASME 400/600 RF Butt-weld ends DIN 3239 Socket-weld ends DIN 3239

300287

300300

300

420405

421420

420

416408

427420

420

Dimensions in mm

H H

1 B B

1

1988080o

80

33090111∅ 225

33090111∅ 225

Flange dimensions DIN 2546

Number of bolts

D b k g l

1402410068184

1702812588224

18026135102224

Approx. weight [kg] 20 54 55

Materials DIN

referenceASTM

equivalent 1)

Body G20Mo5 (6522Mo4)(1.5419) A217 WC 1

Gaskets Graphite//CrNi

Cover screws

21 CrMoV 57(1.7709) A193 B 16

Nuts 24 CrMo 5(1.7258) A193 B 16

SeatX8CrNIS 18 9

X80CrSiMoW 15 2(1.4305 / 1.4732)

(AISI 303/Stellite)

Ball valve X6CrNiMoTi 17122(1.4571) A182 F 304

Ball float X6CrNiMoTi 17122(1.4571) A182 F 316

Bellows X6CrNiTi 18 10(1.4541) A182 F 321

Others internals

X5CrNi 18 10(1.4301) A182 F 304

Pressure / Temperature Rating PMA (Maximum allowable pressure)

[bar g][psi g]

63915

56810

47680

45650

TMA (Maximum allowable temperature)

[°C][°F]

250482

300572

400752

450842

DPMX (Maxi- mum differential pressure 45 bar (650 psi)

(28 or 16 bar) (inlet pressure minus outlet pressure)

DNÆ D

2Æ D

1b

mm in

25 1 46 34.1 13

40 1½ 65 48.7 13

50 2 76 61.5 13

Connections Flanges: DIN 2546 (form E) PN 63 Flanges ASME B 16.5 Cl. 300, 400/600 Socket-weld ends DIN 3239 Class 3000 Butt-weld ends DIN 3239

Butt-weld ends according to DIN 3239-2-R3, edge form 22 according to DIN 2559

Socket-weld ends acc. to DIN 3239-R5 / ASME B 16.11, Class 3000

1) Physical and chemical properties comply with DIN grade ASTM nearest equivalent stated for guidance only.

UNA 27 h, DN 25, Duplex

DN∅ d

2∅ d

1for pipemm in

25 1 34 28.5 33.7 x 2.6

40 1½ 49 43 48.3 x 2.6

50 2 61 54 60.3 x 3.2

1.5


810788-00/304cm · © 1980 GESTRA GmbH · Bremen · Printed in Germany


Capacity ChartThe chart shows the maximum capacities of hot condensate for the range of orifices (O) and sizes available. The cold water capacities are: Capacity of hot condensate multiplied by factor F.

The capacities are dependent on the differential pressure (working pressure). The differential pressure is the difference between inlet and outlet pressures and depends among other things on the run of the line. If the condensate downstream of the trap is lifted, the differential pressure (working pressure) is reduced by approximately 1 bar for 7 m (or 2 psi for 3 feet) in lift.

The maximum admissible differential pressure is dependent on the cross-sectional area of the orifice.

The standard design of the trap is available for a maximum differential pressure of 45 bar (650 psi), see thick lines in the chart.

If, however, larger capacities are required, special orifices are available for differential pressures of:28 bar (405 psi) or16 bar (230 psi)(dashed lines in the chart).

When ordering please state:Inlet pressure, outlet pressure, quantity of condensate to be discharged, design, size and desired orifice, position of the trap and details of application.

The following test certificates can be issued on request, at extra cost:In accordance with EN 10204-2.1, -2.2, -3.1A, -3.1B and -3.1C.

All inspection requirements have to be stated with the order. After supply of the equipment certification cannot be esta-blished. For tests and inspection charges please consult us.

Float Trap UNA 27 h PN 63, DN 25, 40, 50 mm (1“, 1½“, 2“)


Spare Parts

Item No. DesignationOrder No.

DN 25 mm DN 40, 50 mm

Seat including gasket

O 45 560 382 560 385

O 28 560 383 560 386

O 16 560 384 560 387 Cover gasket (DN 25: 88 x 106 x 1, DN 40, 50: 152 x 172 x 1) 522 247 522 248

Control unit Duplex with cover gasket and 2 socket-head screws, without seat 560 367 560 369

Control unit Simplex with cover gasket and 2 socket-head screws, without seat 560 366 560 368

Control unit Duplex with seat gasket , cover gasket and 2 socket-head screws, and seat

O 45 560 378 560 381

O 28 560 377 560 380

O 16 560 376 560 379

Control unit Simplex with seat gasket , cover gasket and 2 socket-head screws, and seat

O 45 560 372 560 375

O 28 560 371 560 374

O 16 560 370 560 373

O

L

K

J

O

O

JO

O

O K

LJ

Orifice (O)

DN 25

kvs values [m3/h] ∅ of hole [mm]

O 45 0.31 3

O 28 0.38 3.5

O 16 0.44 4.1

DN 40 + 50

O 45 1.1 6.5

O 28 1.5 7

O 16 2.1 8.5

Control unit Simplex

J

Capacity Chart

ball float steam trap una 38, pn 100/cl 600, dn 15-50 una...

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