SNT 02 12-10 EN

9905EN ISO

Single Stage Norm Centrifugal Pumps

EN 733

ATEX

SNT

SNT 100 - 250Pump typeDischarge nozzle (DN)Nominal impeller diameter

SNT type pumps are suitable for clean or slightly contaminated liquids with low viscosity.

SNT

Suction Flange

Discharge Flange

Capacity

Head

Speed

Operating Temperature

Casing Pressure (Pmax)

(Pmax : Suction Pressure + Shut off Head)

DN 50 .... DN 300 mm

DN 32 .... DN 250 mm

up to 1700 m³/h

up to 100 m

up to 2900 d/dak

-10 °C to +140 °C *

10 bar (16 bar) *

(*) The material of pumps differ according to the type ofpumped liquid , operating temperature and pressure.Contact our company for deta iled in formation.

In standard production soft packed stuffing boxesare used.

Depending on customer requirement mechanicalseals are available. In this case, pump shaft isalways stainless steel.

Bearings of SNT type pumps are normally “life timegrease lubricated” rolling bearings, except the pumpSNT 200-500 and SNT 250-500 which are always oillubricated.

Depending on customer requirement pumps withoil lubricated or regreaseable bearing are available.

Direction of rotation is clockwise viewed fromdriver end.

The suction and discharge flanges are conformingto EN 1092-2 / PN 16.

Due to the back-pull-out design the complete bearingassembly including impeller and casing cover can bedismantled without removing the volute casing from thepipe system.

All impellers are balanced statically and dynamicallyaccording to ISO 1940 class 6.3.

Axial thrust is balanced by wear ring / balancing holessystem.

Horizontal , radially split volute casing type , singlestage, end suction centrifugal pump with enclosedimpeller.

Dimensionally complies with EN 733.

In addition to 29 basic sizes conforming with EN 733,there are 20 additional sizes. Dimensions of additionalsizes may differ from other suppliers.

Water supply, irrigation and sprinklerWater treatmentAir conditioningCooling plantsFood and beverage processingPaper and cellulose industriesChemical and petrochemical industriesFire - fightingPower plants

General Information

Handled Liquids

Pump Designation

Design Features

Applications

Bearings

Shaft seal

Rotation

Technical Data

SNTField ChartH

ead

(m)

Capacity (m³/h)

Hea

d (m

)

Capacity (m³/h)6 10 15 20 30 40 50 100 150 200 300 400 500 1000 2000

4

5

6

78

10

15

20

30

40

50

60

708090

100

120

9

25

6 7 9 158 10 20 30 40 50 100 150 200 300 400 5006

7

89

10

15

20

30

40

50

60

70

8090

100

120

600

2900 rpm

32-125

32-160

32-200

32-250

40-125

40-160

40-200

40-250

65-160

65-200

65-250

65-125

50-160

50-200

50-250

50-125

100-250

100-200

100-16080-160

80-200

80-250

125-200

32-125

32-160

32-200

32-250

40-125

40-160

40-200

40-250

50-160

50-200

50-250

65-160

65-200

65-250

50-12565-125

40-315

50-315 65-315

65-400

80-160

80-200

80-250100-250

100-200

125-200

80-315

80-400

100-315

100-400

125-250

125-315

125-400

150-200

150-250

150-315

150-400

150-500

200-260

250-315

200-315

200-400

200-500

250-400

250-500

100-160

1450 rpm

(S1)(S2)(S3)(S4)(S5)(S6)(S7)

Different soft packing types (up to 105 °C)M3 mechanical seal (up to 10 bar - 140 °C)MG1 mechanical seal (up to 12 bar - 140 °C)M7 mechanical seal (up to 16 bar - 140 °C)Double mechanical sealBalanced mechanical sealCartridge mechanical seal

Casing wear rings (front - back)Shaft sleeveSealing fluid from outside source (for pumping of contaminated and/or malodorous liquids)Stuffing box cooling (100 °C up to 140 °C)

(K1)(K2)(K3)(K4)

(S7)

202 410203

Form F3

042044

300400

Part List

001

003

010

020

021

030

034

035

041

042

044

046

048

050

060

065

067

070

088

200

202

203

210

211

230

240

300

400

405

410

420

Volute casing

Casing cover

Frame foot

Wear ring (casing)

Wear ring (casing cover)

Bearing housing

Bearing cover

Bearing cover

Cooling jacket

Gland

Lantern ring

Mechanical seal housing

Mechanical seal cover

Impeller

Pump shaft

Impeller nut

Spacer sleeve

Shaft sleeve

Thrower

Ball bearing

Cylindrical roller bearing

Angular contact ball bearing

Impeller key

Coupling key

Drain plug

Seal tubing

Gland stud and nut

Stuffing box packing

Mechanical seal

Oil seal

O-Ring

(S6)H12

SNTSectional Drawings

Form F2

Design & Sealing Options

Form F1

(S3)MG1

(S4)M7

050

210

065

001

230

003 067 034 200 010

211035060030088405420

(S1)

041(K4)

(S2)M3

070240021(K1) (K3) (K2)

020(K1)

046 048

(S5)M7D

SNT

14F1

32-250

( ** ) Gap necessary for the withdrawal of the pump rotor from the driven end without the need for disconnecting the motor and pipework (spacer coupling application).

Shaft EndPump Size

EN 733 Additional ABe ABb A f L h1 h2 m1 m2 n1 n2 n3 s1 p s2 w d l1 t uOverall Dimensions

DIMENSIONS (mm)Support & Feet Dimensions

Weight Space

(kg) x32-12532-16032-200

40-12540-16040-20040-250

50-12550-16050-20050-250

65-12565-16065-20065-25065-315

80-16080-20080-25080-315

100-200100-250100-315100-400

125-250125-315125-400

150-315150-400

40-315

50-315

65-400

80-400100-160

125-200

150-200150-250

150-500200-260200-315200-400200-500250-315250-400250-500

F2

F1

F2

F1

F2

F1

F2

F1

F2

F3

F1

F2

F3

F3

F1F2

F3

F2

F3

F3

F1

F3

50

65

65

80

80

100

100

125

150

200

250

300

32

40

50

65

80

100

125

150

200

250

80

100

80

100

100

125

100

125

125

125

140

140

160

200

200

180210

230

225

360

360

360

470

360

470

360

470

530

470

530

470

530

470

530

730

610

725925730750940

440

460

440

460

460

570

460

595

485

595

655

595

610

670

610

670

630

690

930

810

90511359609801165

112132160180112132160180200132

160

180225

160

180200225260

180

200250280

200

225250280

250

280315

280

315400

355

400

400

450

140160180225140160180225250160180200225280180200225250280355225250280315355

280

315355315

355

400355375400450525

450

500525

525

630

100

125

100

125

100

125

125

160

125

160

160

200

160

200

200

250

250

300

300

70

95

70

95

70

95

95

120

95

120

120

150

120

150

150

200

200

240

240

190

240

320210240265320345240

265

320345

280

320360400435320345

400

435

360

400

500

400

500

500

550

720

600

720

720

140

190

250160190212250280190

212

250280

212

250280315355250280

315

355

280

315

400

315

400

400

450

600

500

600

600

90

140

190110140165

190

140

165

190

150

190200240275190215

240

275

200

240

300

240

300

300

350

435

360

435

435

14

14

19

14

19

14

19

19

23

19

23

23

27

23

27

27

110

110

110

110

110

110

110

110

140

140

140

14

14

14

14

14

14

14

14

20

20

20

260

260

260

340

260

340

260

340

360

340

360

340

360

340

360

495

410

490640

670

24

24

24

32

24

32

24

32

42

32

42

32

42

32

42

55

42

5570

55

70

50

50

50

80

50

80

50

80

110

80

110

80

110

80

110

140

110

140

110

27

27

27

35

27

35

27

35

45

35

45

35

45

35

45

74.5

59

74.5

45

59

59

8

8

8

10

8

10

8

10

12

10

12

10

12

10

12

16

12

16

323941535340455767344248579040465190

105130496395

1251758087

10013018097

110180200150160190230480280300360640390460660

100

100

100

100

140

140

140

140

140

200

180

200

595

20

16

20

F1

F1F2

520530

Technical Data

SNT

Material Equivalents

Material Options

(*) Optional :Depending on customer requirement or request different types and brands of mechanical seals are applicable.Optional

Standard manufacturing

Duplex (austenitic-ferritic) steelChrome nickel molybdenum steel (low carbon)

GJL-250 (GG 25)GJS-400-15 (GGG 40)

G-X5 Cr Ni 19-10

C 45X20 Cr 13

GP240GH (GS-C 25)

G-X5 Cr Ni Mo 19-11-2G-X2 Cr Ni Mo 19-11-2

X5 Cr Ni 18-10X2 Cr Ni 19-11X5 Cr Ni Mo 17-12-2

1.40211.43011.43061.4401

Description DIN 17007 EN-DIN ASTM

Cast ironNodular cast ironCast steelChrome nickel cast steelChrome nickel molybdenum cast steelChrome nickel molybdenum cast steel (low carbon)

Carbon steelChrome steelChrome nickel steelChrome nickel steel (low carbon)

0.60250.70401.06191.43081.44081.4409

1.0503

A 48 Class 40-BA 536 Gr. 60-40-18A 216 Gr. WCBA 351/743/744 Gr. CF8A 351/743/744 Gr. CF8MA 351/743/744 CF3M

A 29/108/576 1045A 276 Type 420A 276 Type 304A 276 Type 304L

X2 Cr Ni Mo 17-12-21.4404Chrome nickel molybdenum steel

A 276 Type 316 LA 276 Type 316

X2 Cr Ni Mo N 22-5-31.4462 A 276 (32205)

G-X2 Cr Ni Mo Cu N 25-6-3-3Austenitic-ferritic cast steel (duplex) 1.4517

G-Cu Sn 10Cast bronze 2.1050.01 B 584 C 90700Austenitic-ferritic cast steel (super duplex) G-X2 Cr Ni Mo N 26-7-41.4469

A 890 Gr. 1B (CD4MCuN)A 890 Gr. 5A (CE3MN)

Flange Dimensions

Volute casingCasing coverImpellerShaftBearing housingWear ring (Casing)Shaft protecting sleeveMechanical seal (*)

Parts List

EN 12756 / DIN 24960

0.60

25

0.70

40

1.06

19

1.43

08

1.44

08

1.05

03

1.40

21

1.43

01

1.44

01

1.43

06

1.44

04

1.44

09

1.44

62

2.10

50.0

1

1.45

17

1.44

69

Technical Data

Discharge (PN 16)Suction (PN 16)

DNe Df k s n DNb Df k s n

32

40

50

65

80

100

125

150

50

65

125

150

200

165

185

250

285

340

125

145

210

240

295

19

19

23

19

19

4

4

8

8

12

32

40

50

65

80

100

125

150

140

150

185

200

220

250

285

165

100

125

145

160

180

210

240

19

23

19

19

19

19

19

19

4

4

4

4

8

8

8

8

110

PumpType

65 185 145 19 4

80 200 160 19 8

100 220 180 19 8

200 250 405 355 23 12 200 340 295 23 12

250 300 460 410 28 12 250 405 355 28 12

“n“ number of holes

DN

e/D

Nb

Df k

Right reserved to change without notice.No responsibility is accepted because of printing errors.