tracing the evolution of triple offset design - internodepacwa/butterfly/triple offset firesafe...

Tracing the evolution of Triple Offset design

The centre of rotation is moved back from the centreline of the valve disc. The seat and seal aredesigned conically and on centre. This design relies on a frictional, interference seal and so isapplicable only to soft seated valves.

The centre of rotation is moved from the centerline of the valve body. The seat and seal designremains conical and on centre. This design again relies on a frictional, interference seal, but thelength of rotation over which this friction occurs is reduced, allowing a larger range of processresistant seat materials to be used. However these materials must be relatively soft or highlyelastic to prevent “ jamming”.

Double Offset

Single Offset

Triple Offset

The centreline of the cone is rotated away from the valve centreline resulting in an ellipsoidalprofile and providing the third offset. With this geometry, seat seal interference is completelyeliminated ensuring long sealing life. The result is a torque seated, process pressure aidedFRICTIONLESS seal. The geometry allows the body seat to be used as the closed limit stop,aiding operator adjustment. The Triple Offset design is ideally suited to metal seated valves providing bubble-tight performance on high temperature, high pressure and firesafe applications.

1

Offset Valve-Disc/Seat Friction

2

Features of the Tritec Valve

Triple offset and ellipsoidal sealing geometryBi-directional zero leakageInherently Firesafe Developed Geometry results in

Zero Seat/Seal FrictionLow Torques Extended Service LifeContinued Seal through Thermal CyclingTorque Seating

Excellent flow and throttling characteristicscovering services from Cryogenic to hightemperature

Excellent control of Fugitive Emission by virtue ofRotary stem movement and advanced packingmaterials

Less than 10ppm on FugitiveEmission Test to cover EPA21

Other tests available on request

Firesafe to BS6755part 2 / API 6FA andAPI Std 607 4th Edition

Available Fully Rated toClass 1500Lb

Fully rated for end ofline duty

Standard materialsconform to NACE,all exotic materials also available.

Laminated seat is mounted in the body, removing itfrom the erosive effects of the flowing media

Seat is self centering "floating" design

Both Seat and Seal are field replaceablewithout special tools.

Unique elliptical bolting pattern allowsfoolproof replacement of seat and seal

Gasket Sealing Face is completelyuninterrupted by fixings

Suitable for use with Spiral Wound gasketsand all flange finishes including RTJ

Antiblowout device on shaft with bothinternal and external retaining systemsaccording to API Std 609

ISO mounting flange allows easyfitting and changing of operators

Operator is bolted and doweled toprevent radial movement andsubsequent loss of seating torque.

Body counterbore and seat bolting arrangedelliptically to ensure equal support, gasket land andgasket loading all around the elliptical edge of thelaminated body seat.

Inboard AND outboard thrust mechanisms preventdecentralising of disc, even under high temperatureand line pressure.

By eliminating seat-seal friction on unseating, Tritecremoves the "Blind Zone" and increases therangeability or controllable range to the full 90° ofmovement. The rotation geometry and inboardbearing design reduce the effect of dynamic torqueand mechanical noise-vibration, increasingmidrange control accuracy. Cavitation and Noisereducers are available to complement the Tritecvalve under high pressure drop process situations.

3

Design Options

CRYSEAL - CRYOGENIC VALVES. Temperatures to - 196°C.Designed, tested and certified to BS6364 1988.

DOUBLE BLOCK & BLEED VALVES. To allow verifiable, maintainable shut-off in critical isolation applications. Firetested toBS 6755 part 2/API6FA & API607 4th edition.

STEAM JACKETED VALVES. To maintain process temperatures ensuring media remains fluid. Discand shaft steam tracing as an option.

TOP ENTRY VALVESAllowing complete maintainability on valves which are welded into line. Available on standard and cryogenic ranges.

CONTROL VALVES. Frictionless seating means increased rangeability, allowing theTritec valve to perform in both control and isolation application

VALVES TO REDUCE FUGITIVE EMISSION. Designed to reduce fugitive emission, testing is available to all international standards plus customer specific requirements.

COMMISSIONING SETSAllowing process flow rates to be set accurately via manually operated valves.

TADPOLE RUBBER SEALED VALVES. Resilient sealed, double offset valves available in ratings to 300LB, in all materials and with various seal rubbers. eg Nitrile, Viton, EPDM, Silicon, Butyl etc

RUBBER SEATED VALVES. Extending the range of materials available in the Tomoe Rubber seated valve range.

BODY

DISC SEAL

DISC

4

Standard Specifications

DesignValve SizesPressure ClassesBody Styles

Flange Accommodation

Face to Face Dimensions

Pressure Temperature Ratings

Pressure Tests

FiresafeMarkingOperators

API Std 609, BS 5155, ANSI B16.34, ASME SEC VIII2”(50mm) - 48”(1200mm)Class 150Lb - Class 1500LbLugged, Wafer Flangeless, Double Flanged, Butt Weld EndANSI B16.5: 2" - 24"ANSI B16.47 Series A&B : 26" - 48"LUG and WAFER TypeAPI Std 609 Table 2 : 3" - 24"API Std 609 Table 1 : 30", 36", 42", 48"SO 5752 Wafer Short : 28", 32", 40"DOUBLE FLANGED TypeISO 5752/BS 5155 Double Flange ShortASME/ANSI B16.34 : for Steel ASME/ANSI B16.24 : for BronzeWorking Temperature Range as Standard -29°C (-20°F) to +538°C (1000°F) With selection of suitable materials-100°C (-148°F) to +700°C (1292°F)Shell Test, Seat Test API Std 598 Seat Leakage RateAPI Std 598, ISO 5208 Rate A, ANSI B16.104 (ANSI / FCI 70-2) Class VICertified Firesafe to BS 6755 Part2/API 6FA and API 607 4th Ed.API Std 609 MSS SP-25Manual, Electric, Pneumatic, Hydraulic

1. Please contact the sales office for larger sizes. 2. Please contact the sales office for pressure classes above 1500Lb. 3. JIS 10K, 20K, 30K MSS, API, BS, DIN, PN, ISO also available on request.4. ISO 5752 Gate Valve Short (Basic series 3/ASME B16.10) on request.5. For Cryogenic range (temperature to -196°C (-320°F)), please contact the sales office.

ITEM

1

2345678910111213141516171819222324252627293334353738

DESCRIPTION

Body

Disc

Body Seat

Body Seat Retaining Ring

Body Seat Gasket

Disc Seal

Disc Seal Gasket

Shaft

Shaft Pin

Bearing

Thrust Ring

Thrust Pad

End Cover

End Cover Gasket

Gland Plate

Gland Plate Spigot

Mounting Plate

Dowel Pin

Nameplate

Disc Seal Screw

Thrust Pad Screw

Body Seat Screw

Mounting Plate Screw

End Cover Screw

Gland Stud

Gland Nut

Gland Packing

Gland Packing

Operator Key

Anti-blowout Collar

Set Screw Anti-blowout

STANDARD

General hydrocarbon duties including Sour Gas,

Flare Gas,Steam and Process Gases.

Cast carbon steel ASTM A216 WCB

or Plate carbon steel ASTM A516 Gr.70 or BS EN10025 S275JR

Cast carbon steel ASTM A216 WCB

Laminated Stainless steel type 316/Graphite

Steel

Graphite

Stainless steel type 316

Graphite

Stainless steel ASTM A564 type 630 H1150+1150


Stainless steel type 316/hard chrome plated




Graphite



Steel










Graphite Passivated

Braided Graphite

Steel



OPTION 1

Low temperature hydrocarbons (down to -100°C),

Condensates

Blowdown Gas and other general corrosive duties.

Cast Stainless steel ASTM A351 CF8M

Cast Stainless steel ASTM A351 CF8M

Laminated steel type 316/Graphite


Graphite


Graphite







Graphite



Steel










Graphite passivated

Braided Graphite

Steel



Recommended SparesThe materials shown above are representative, all other materials and surface treatments are available on request,eg. Incoloy, Titanium, Monel, Hastelloy, Inconel, Stellite, Titanium Nitride. 5

OPTION 2

High chloride duties,eg.Sea water and Fire water,

Low temperature and sour hydrocarbons.

Cast Super Duplex Stainless steel ASTM A890 Grade 6A

Cast Super Duplex Stainless steel ASTM A890 Grade 6A

Laminated Super Duplex Stainless steel UNS S32760 / Graphite

Super Duplex Stainless steel UNS S32760

Graphite


Graphite







Graphite



Steel










Graphite passivated

Braided Graphite

Steel



OPTION 3

Very high chloride duties,eg.Brine and Acids,

Sour hydrocarbons and other corrosive duties.

Cast 6Mo Stainless steel ASTM A351 CK3-MCuN

Cast 6Mo Stainless steel ASTM A351 CK3-MCuN

Laminated Super Duplex Stainless steel UNS S32760 / Graphite


Graphite


Graphite







Graphite



Steel










Graphite passivated

Braided Graphite

Steel



OPTION 4

Sea water, Fire water,

Cooling water and Deluge systems.

Cast Nickel Aluminium Bronze BS 1400 AB2


Laminated Monel 400/Graphite


Graphite


Graphite

Monel K500

Monel K500



Monel K500


Graphite



Steel



Monel K500

Monel K500

Monel K500





Graphite passivated

Braided Graphite

Steel



Construction

6

Pressure - Temperature Ratings

BodyDiscShaft

A216 Gr. WCBA216 Gr. WCBA564 type 630

BodyDiscShaft

A351 Gr. CF8MA351 Gr. CF8MA564 type 630

BodyDiscShaft

A216 Gr. WCBA216 Gr. WCBA564 type 630

BodyDiscShaft

A351 Gr. CF8MA351 Gr. CF8MA564 type 630

Temperature(°F) (°C)-201002003004005006006507007508008509009501000

-293893149204260316343371399427454482510538

Class 1501.96 1.96 1.79 1.59 1.38 1.17 0.9650.8620.7580.6550.552

0.4480.3450.2410.138

Working Pressure (MPa) Working Pressure (MPa)Class 300

5.10 5.10 4.65 4.52 4.38 4.14 3.79 3.69 3.69 3.48 2.83

1.861.170.7240.345

Class 1501.90 1.90 1.62 1.48 1.34 1.17 0.9650.8620.7580.6550.5520.4480.3450.2410.138

Class 3004.964.964.273.863.553.313.103.072.962.932.902.902.862.652.41

Temperature(°F) (°C)-201002003004005006006507007508008509009501000

-293893149204260316343371399427454482510538

(Notes) Permissible, but not recommended for prolonged use above 800°F (427°C).

Please contact the sales office for temperatures outside of standard temperature range as detailed in the above table.

7

Cv Values

mm80

100150200250300350400450500600700750800900

100010501200

inch3468

1012141618202428303236404248

12

16305278

106165217268386559630719884

117012301640

5°

612315799

147201313413509734

1060120013701680222023403120

14264582

142212289451594733

10601530172019702420319033704490

234259

108187279380594782965

13902010227025903180421044405920

315776

140242362493769

1010125018002610294033604120545057607670

3972

101185320478651

1020134016502380345038804440545072107610

10100

4785

134246426636866

135017802200317045905160590072509580

1010013500

5498

178327566846

115018002370292042106100687078409630

127001340017900

62113233427739

11001500235030903820550079608960

1020012600166001760023400

71130297544942

141019202990394048607000

10100114001300016000212002240029800

82150369676

1170175023803720489060408700

12600142001620019900263002780037000

96176448821

142021202890451059407340

1060015300172001970024200319003370045000

112205531974

169025203430535070508710

1250018200204002330028700379004000053400

128234616

113019602920398062108180

101001450021100237002710033300440004650061900

143262698

128022203310451070409270

114001650023900289003070037700498005260070100

156285758

13902410360048907640

10100124001790025900292003330040900541005710076100

163299796

14602530378051408020

10600130001880027200307003500043000569006000080000

165302796

14602530378051408020

10600130001880027200307003500043000569006000080000

Valve size150Lb

10° 15° 20° 25° 30° 35° 40° 45° 50° 55° 60° 65° 70° 75° 80° 85° 90°

mm80

100150200250300350400450500600700750800900

100010501200

inch3468

1012141618202428303236404248

126

11192939587795

136199232261332399457480

5°

612254582

122167248326403580844986

11101410170019402040

14264174

135202274408537663955

1390162018302320279032003360

23425498

178266363539710876

12601840215024203070369042304440

315769

126229342466692911

113016202360275031003940474054305700

397291

166301450613910

1200148021303100362040805190623071407500

4785

121222402601818

1220160019802850415048405450693083309540

10000

5498

162298540807

110016302150265038205560649073109300

112001280013400

62113212389705

105014302130281034604990726084809550

12100146001670017500

71130268492891

1330181026903550438063109190

107001210015400184002110022200

82150334613

1110166022603360442054607860

11400134001500019100230002630027700

96176407746

1350202027504090538066409570

13900163001830023300280003200033700

112205482884

160024003260484063807880

1130016500193002170027600332003800039900

128234559

1030186027803780561074009130

1310019100224002520032000384004400046300

143262634

116021103150429063708390

104001490021700254002860036300436005000052500

156285689

126022903420466069209110

113001620023600275003100039400474005420057000

163299725

133024103600490072809590

118001710024800290003260041500499005710060000

165302725

133024103600490072809590

118001710024800290003260041500499005710060000

Valve size

300Lb10° 15° 20° 25° 30° 35° 40° 45° 50° 55° 60° 65° 70° 75° 80° 85° 90°

Contact the sales office for Cv and sizing information if not shown here. 8

Valve Operating Torques (Nm)

2 60 50 35 70 142 203 90 80 50 120 335 204 120 110 70 150 660 205 130 120 80 190 881 206 150 140 90 260 881 208 350 260 105 445 881 2010 600 500 300 900 1607 2012 960 800 400 1200 2677 2014 1400 1200 600 1600 3517 1516 2000 1800 850 2700 7421 1018 2900 1900 1050 3650 7421 1020 3785 2400 1600 4500 11479 1024 6535 3240 2760 7100 22453 1028 11818 6500 4368 13942 28015 530 18481 7618 5409 20689 30332 532 19405 8537 6583 21359 41829 536 27504 13779 8810 32473 50133 540 36034 17928 11180 42782 59520 542 37524 20118 14081 43561 81853 548 60027 28565 20997 67595 102734 5

VALVE SIZE OPENINGPREFERRED DIRECTION REVERSE DIRECTION

CLASS 150Lb (20 BAR G)

SEATING OPENING SEATINGMAXIMUM

SHAFTTORQUE

MINIMUM SIZING DP

(BAR)

2 90 75 55 105 142 353 150 135 75 250 335 354 200 170 105 320 660 355 270 240 120 420 881 356 390 350 200 570 1260 358 960 700 395 1270 2677 3010 1500 1100 710 1800 4165 3012 2650 1600 1320 2900 7421 3014 3720 1900 1840 3750 11529 3016 5920 3730 2940 6710 17590 2018 9000 4600 4200 9420 28015 1520 11440 5670 5560 11600 34357 1524 19100 8500 9340 18140 50313 10




SHAFTTORQUE

MINIMUM SIZING DP

(BAR)

3 220 161 43 338 4844 371 325 84 612 8836 896 729 269 1356 22408 1817 1315 1156 2471 530910 3384 2397 1538 4243 1036912 4667 3146 2232 5581 1380214 7310 4200 3520 7990 2278116 10238 6995 4954 12279 3499618 16426 10170 8696 17900 6047420 20504 12995 11805 21694 7112324 36276 20412 22550 36276 126164




SHAFTTORQUE

9

Valve Operating Torques (Nm)

3 334 240 70 504 6644 652 96 142 1006 12966 1535 1098 467 2166 35578 2831 1961 1108 3684 755910 5960 3595 2751 6804 1791812 9071 4741 4233 9579 2845414 21205 6260 6456 12105 4247316 16735 10425 8860 18300 6047418 26640 15158 15120 26678 9603120 36115 19429 21299 36115 12616424 59910 30421 39453 59910 204101




SHAFTTORQUE

6 4122 2777 1060 5839 75598 6514 4206 1914 8806 1166410 10456 6040 3485 13011 2278212 14490 8998 6210 17278 3499714 25563 12490 9657 28396 5094516 35832 25304 14930 46206 8295518 52837 34268 22354 64751 11041320 73771 44903 33532 85142 16202224 119434 63957 61643 121748 339785




SHAFTTORQUE

Contact the sales office for torque figures not shown above.Torques shown are for full rating and are linear with pressure. Do not use less than the minimum sizing DP when calculating operating torques. Tomoe Tritec suggests a minimum of 20% Safety Factor on the above torques.Although the valves are suitable for Bi-Directional use, the offset geometry creates a Preferred direction of flow which if used (for uni-directional flow) can show a torque and actuator size reduction. Maximum shaft torque is for 17-4PH in the H1150+1150 condition. For other shaft materials, consult Tomoe Tritec for guidance.Run torques are 40% of the Preferred direction Opening torque.Torques shown are valid for temperatures of -100°C (-148°F) to +538°C (+1000°F)For temperatures outside this range consult Tomoe Tritec.Torques shown assume a maximum liquid velocity (pipeline) of 5 m/s. For higher liquid velocity, where hydrodynamic torque may need to be considered, consult Tomoe Tritec. Please ensure that any actuator chosen to operate the Tritec valve is capable of supplying 5° over-travel and has mechanical limit stops controlling the closed position.Note that operators must be dowelled to the valve mounting plate. Dowels will be supplied with bareshaft valves but it is the purchasers responsibility to ensure separately purchased operators and mounting kits are machined to accommodate these dowels. If in doubt, contact the sales office.

N m kN m kgf m Ibf in Ibf ft1 0.001 0.102 8.85 0.738

1000 1 101.972 8851 737.69.807 .0098 1 86.8 7.2330.113 1.13 x 10-4 0.01155 1 0.0831.356 0.0014 0.138 12 1

TORQUE CONVERSION FACTORS

10

Allowable Seat Leakage Rates by Standard (Gas Test)

Allowable Seat Leakage Rates by Standard (Gas Test)

REFERENCE

11

Allowable Seat Leakage Rates by Standard (Liquid Test)

Allowable Seat Leakage Rates by Standard (Liquid Test)

REFERENCE

12

Comparison by Valve Types

TEMPERATURE RANGEMAX. PRESSURE CLASS

BODY CONNECTION

WEIGHTSPACE

SEAT SEALING PERFORMANCE

SEAT SEAL FRICTIONSEALING LIFESTEM MOVEMENTEMISSION SEAL PERFORMANCEINHERENTLY FIRESAFEFIRETESTEDGEOMETRY OFFSETTHRUST BEARINGSONE PIECE SHAFTEASE OF MAINTENANCEFLOW CAPACITY Cv RANGEABILITYFLOW CHARACTERISICRECOVERY COEFFICIENT FL

CAVITATION COEFFICIENT Kc

OPERATOR COST

COSTSMATERIALFREIGHTINSTALLATIONPIPE SUPPORT

-196° to +700°C CLASS 1500LB

WAFER, LUGGED,DOUBLE FLANGED,BUTT WELD END

SMALLSMALL

TIGHT SHUT OFF

NONEVERY GOOD

ROTARY QUARTER TURNGOODYESYES

TRIPLEYES(2)

YESEXCELLENT

25d2

50 to 100 : 1EQUAL PERCENT

0.850.32LOW

low torque + quarter turn

LOWLOWLOWLOW

-196° to +700°C CLASS 2500LB

DOUBLE FLANGEDWELDEDLARGELARGE

CLASS IV or TIGHT SHUT OFF

(depending on seat material)

HIGHDISADVANTAGEOUSLINEAR MULTI-TURNDISADVANTAGEOUS

YESAVAILABLE

N/AN/AN/A

DISADVANTAGEOUS45d2

N/AQUICK OPENING TO LINEAR

N/AN/A

HIGHmulti turn motor

HIGH above 300 mmHIGHHIGHHIGH

COMPARISON BYVALVE TYPES

TOMOE TRITEC GATE VALVE

13

-196°C to +650°CCLASS 600LB

SCREWED,WELDEDDOUBLE FLANGED

LARGELARGE

CLASS IV or TIGHT SHUT OFF(depending on seat material)

YESDISADVANTAGEOUSLINEAR MULTI-TURNDISADVANTAGEOUSMETAL SEATED YES

AVAILABLEN/AN/AN/A

DISADVANTAGEOUS15d2

50 to 100 : 1VARIOUS AVAILABLE

0.850.65HIGH

multi turn motor

HIGHHIGHHIGHHIGH

-196°C to +700°CCLASS 2500LB

DOUBLE FLANGEDWELDEDLARGELARGE


HIGHDISADVANTAGEOUS

ROTARY QUARTER TURNGOOD

METAL SEATED YESAVAILABLE

CONCENTRICYESNO

DISADVANTAGEOUS45d2

50 : 1EQUAL PERCENT

0.550.22HIGH

torque typically 2X TOMOE TRITEC

HIGH above 150 mmHIGHHIGHHIGH

-50°C to +250°CCLASS 300LB

WAFER,LUGGEDSMALLSMALL


YESGOOD

ROTARY QUARTER TURNGOOD

METAL SEATED YESAVAILABLE

DOUBLEYESYES

GOOD30d2

30 : 1EQUAL PERCENT

0.740.38LOW

low torque + quarter turn

LOWLOWLOWLOW

<NOTE> GATE,GLOBE and BALL valve properties are typical, not specific to any manufacturer.

N/A : Not applicable

GLOBE VALVE TYPICAL HPBVBALL VALVE

14

150LbAllowable Min.Internal Diameter for Piping

Dimensions (mm)

mm5080

100150200250300350400450500600700750800900

100010501200

inch23468

1012141618202428303236404248

107127151177195227266293336356391463567597627687716746840

H1

152159194242237277325352425443482550661676722795815850995

3434343434647979797979

109129129129175175175199

222931374146536164758197

104102117125135153162

4348545764718192

102114127154165165190200216251276

4348545764718192

102114127154165165190200216251276

108114127140152165178190216222229267292318318330410410470

79

1726355595

135189256300543740927

10801628194522402787

79

1524304687

120163229273483660773948

1305155618922459

131624405792

155197272297428674875

112512451725229225013440

Valve size150Lb

H2 A L1 Lugged Type

Wafer Type

Lugged Type

Wafer Type

Flanged Type

Approx.weight (Kg)

mm5080

100150200250300350400450500600700750800900

100010501200

inch23468

1012141618202428303236404248

179186221269272319375402475497548615736828874969989

10241113

B

152152152152184230279314391498498530617685685758758758

1065

3139393952679090

154606097

237237237292292292356

125125125125254356457610610610610610610457457610610610762

101220294063

110150230313361606920

110712601908222525203497

Valve size

150LbManual gear type

C D ØWApprox.weight(Kg) mm

80100150200250300350400450500600700750800900

100010501200

inch3468

1012141618202428303236404248

7389

131184228282315372401462564660709756847926985

1192

ØS1

6182

122178220273303339385431510646698742830910967

1098

Valve sizeØS2

For valve sizes above 24”, dimensions will be identical for both ASME B16.47 Series 'A' and Series 'B' .However the weight given is for the heavier version.(Series'A')

L

Lugged type

Wafer type

Double Flanged type

Manual gear type

Allowable Min. Internal Dia. for piping

Flanged Type

15

Dimensions (mm)

mm5080

100150200250300350400450500600700750800900

100010501200

inch23468

1012141618202428303236404248

107127151199218251296331377407440512640690720780750786850

H1

152159194269285325387410465528561636800825860940910945

1000

3434346479797979

109109129128199199199199199199249

222931374448546167798597

104117117130135151167

43485459738392

117133149159181209241241260300300320

43485459738392

117133149159181209241241260300300320

108114127140152165178190216222229267292318318330410410470

1012264869

108167238363496559805

1363165818562511242426493684

101221355480

134168226345391670

1193146316612281221424393384

17193986

107136229314413525667957

1335171519572590258528494106

Valve size300Lb

H2 A L1 Lugged Type

Wafer Type

Flanged Type

Lugged Type

Wafer Type

Flanged Type

Approx.weight (Kg)

mm5080

100150200250300350400450500600700750800900

100010501200

inch23468

1012141618202428303236404248

179186229311335375437464531593636789974999978

1058102810631180

B

152152169223279314391498560560582668758758

10291065106510651233

313952679090

15460

138181237237292292356356356356537

125125200300457610610610457457457356610610610762762762762

131526436895

175209287408571

10001640193525703225314033655400

Valve size



80100150200250300350400450500600700750800900

100010501200

inch3468

1012141618202428303236404248

7389

130181223278301356386431549

ØS1

6182

122177219273304337385429510

Valve size


ØS2

For valve sizes above 24”, dimensions will be identical for both ASME B16.47 Series 'A' and Series 'B' .However the weight given is for the heavier version.(Series'A')

Please contactthe sales office.

L

Lugged type

Wafer type

Double Flanged type

Manual gear type


16

Dimensions (mm)

mm80

100150200250300350400450500600700750800900

100010501200

inch3468

1012141618202428303236404248

154166238248316349374474476504555

H1

202208302315376442457561610645730

4444797979

109109129129129178

31354360667685

102112112127

546478

102117140155178200216232

546478

102117140155178200216232

180190210230250270290310330350390

163072

102187259329520635804

1243

15286592

134224285455555694

1093

4369

135162268369364632739879

1423

Valve size600Lb

H2 A L1 Lugged Type

Wafer Type

Flanged Type

Lugged Type

Wafer Type

Flanged Type

Approx.weight (Kg)

mm80

100150200250300350400450500600700750800900

100010501200

inch3468

1012141618202428303236404248

237250352365430508522636762797904

B

169207314391463463560582665685758

526790

1545454

181237237237292

200254610610457457457457356457610

203990

147247319449701830

10001520

Valve size



80100150200250300350400450500600700750800900

100010501200

inch3468

1012141618202428303236404248

5161

100149196220253290351385510

ØS1

05397

112189216246269334387499

Valve size


ØS2

L

Please contact the sales office.

Please contact the sales office. Please contactthe sales office.

Lugged type

Wafer type

Double Flanged type

Manual gear type


17

Dimensions (mm)

mm100150200250300350400450500600700750800900

100010501200

inch468

1012141618202428303236404248

181238281358383419455503550656

H1

240315360412475512610660685790

647979

109109128129178178199

405260718588

107114127142

80104112135170173210228250275

80104112135170173210228250275

235250310350380400430460490530

43100151256352440663824

10691704

3989

134224298376570691905

1317

93184256425496656834

104412732506

Valve size900Lb

H2 A L1L

Lugged Type

Wafer Type

Flanged Type

Lugged Type

Wafer Type

Flanged Type

Approx.weight (Kg)

mm100150200250300350400450500600700750800900

100010501200

inch468

1012141618202428303236404248

290365414478540587762834859908

B

247331498560560582665723758994

6712360

138181237237292292356

365457610457457457356457610457

59130212329472621857

110013462417

Valve size



100150200250300350400450500600700750800900

100010501200

inch468

1012141618202428303236404248

2877

136184212239261323376488

ØS1

4180

132186209252270334382488

Valve size


ØS2

Please contactthe sales office.

Lugged type

Wafer type

Double Flanged type

Manual gear type


18



Dimensions (mm)

mm150200250300350400450500600700750800900

100010501200

inch68

1012141618202428303236404248

257307371414493530591664780

H1

347405510545610655750810950

109109129129178199199199249

8090

100118124133

154.5169.5

204

160180200230250265300340400

160180200230250265300340400

290330390430470510550630710

175237379605849995

147822483021

124202282360589614992

15971792

207406646842

11631476196827824288

Valve size1500Lb

H2 A L1 Lugged Type

Wafer Type

Flanged Type

Lugged Type

Wafer Type

Flanged Type

Approx.weight (Kg)

mm150200250300350400450500600700750800900

100010501200

inch68

1012141618202428303236404248

413470585697784773868928

1100

B

463560582685722

1028102810281146

60181237237292356356356442

457457610457457610610610610

60230181197277714748714

1164

Valve size



150200250300350400450500600700750800900

100010501200

inch68

1012141618202428303236404248

ØS1

01185

106134185237257325

00

67105157209238286315

Valve size


ØS2

L

Lugged type

Wafer type

Double Flanged type

Manual gear type


19



For the direct replacement of gate valves, all dimensions are exactly as per the standard Double Flanged valve withthe exception of the face to face dimension which is shown below.(in accordance with ISO 5752 gate valve short).

Allows direct replacement of existing gate valves without modification of pipework.

Disc remains within the body face to face in the fully open position to allow removal of the valve from pipework evenwhen the valve is open.

Reduction of fugitive emission due to quarter turn rather than linear shaft movement.

Reduced operator costs due to quarter turn rather than multi turn / linear.

Gate Valve Face to Face

150LB

FlangedGate F-F

300LB

FlangedGate F-F

600LB

FlangedGate F-F

900LB

FlangedGate F-F

1500LB

FlangedGate F-F

356432559660787838889991109211941397

457610838838965

10291130121913211549

705832991113012571384153716641943

Valve size

mm

5080100150200250300350400450500600

inch

23468

10121416182024

178203229267292330356381406432457508

2162823054034194575027628389149911143

20

Operating and Maintenance Instructions

INTRODUCTIONThis instruction provides general information on the operation,installation and maintenance of the Tritec triple offset valve. TheTritec valves have been designed and manufactured to operate in anaggressive environment under extremes of temperature and pressurefor long periods and with minimal maintenance.

INSTRUCTIONSPACKING

1. All valves will bedespatched with protective covers attached to the flangefaces to protect the gasket sealing surfaces and internal trim.

2. The valve disc is cracked off the seat in the almost closedposition.

3. The Tritec nameplate shown in the picture contains informationsuch as size,pressure class,materials and the unique serial number.

SPARE PARTS

1. When ordering spare parts or discussing matters concerning this valve with the sales office, it is essential to quote the unique Serial Number of the valve which is to be found on the stainless steel nameplate attached to the valve body adjacent to the operator.

TRANSPORTATION

1. Use crates or packing cases for ocean transportation.2. For overland transportation, a covered vehicle is recommended

with protective sheets covering the valves.

STORAGE

1. Store the valves indoors in a cool temperature between –10Þand+60ÞC, humidity at 70% or less.

2. Do not remove the protective covers until ready to install valves.3. Machined ferrous surfaces are protected with an approved rust

preventative. For long periods of storage, apply the rustpreventative once a year to the unpainted surfaces.

4. When storing valves unpacked, take care in protecting valves andactuators from excessive loads. Do not stack unpacked valves.

5. If the valve is for clean gas duty and is being supplied “DEGREASED”,a label is attached stating this and the valvesealed in a polythene covering. It is suggested that the valve is kept packed until it is to be installed in the pipeline.

UNPACKING

1. Unpack valves just before installation.

INSTALLATIONa The valve is designed to seal against bidirectional flow and can

therefore be installed with flow in either direction. Howeverenhanced sealing life will be obtained with upstream flow againstthe shaft side of the disc. This preferred flow direction is shown onthe nameplate attached to the valve body adjacent to the operatorand also on the GA drawing. The valve may be installed in thepipeline with the valve shaft in a horizontal,vertical or intermediateposition.

b Prior to installation,the pipeline must be cleaned from dirt andwelding residues to avoid damage to the valve during operation.

c Ensure that the valve is closed prior to installation to avoid the riskof damage to the sealing surfaces.

123456789

10111213141516

BodyDiscBody SeatBody Seat Retaining RingBody Seat GasketDisc SealDisc Seal GasketShaftShaft PinBearingThrust RingThrust PadEnd CoverEnd Cover GasketGland PlateGland Plate Spigot

DescriptionNo11111111

2-44111111

Qty171819222324252627293334353738

Mounting PlateDowel PinNameplateDisc Seal ScrewThrust Pad ScrewBody Seat ScrewMounting Plate ScrewEnd Cover ScrewGland StudGland NutGland PackingGland PackingKeyAnti-blowout CollarSet Screw Anti-blowout

DescriptionNo1

2-41-21set2-31set4-64223211

1-2

Qty

21

Operating and Maintenance Instructions

d The valve must be lifted by the eyebolt or lifting eyes provided withthe valve.

e The valve must not be lifted by the operator or handwheel.f The valve must not be used for pipework alignment.g The Lugged or Double flanged type valve is suitable for dead end

service ie.end of line duty, in either direction (in case of the valvespecified both directions) to the full rating pressure of the pipingsystem.

MAINTENANCETomoe Tritec triple offset valves are designed for minimum maintenance, however, it is recommended that the valve is cycled several times from fully open to fully closed every 3 months.In addition it is recommended that the valve is removed from thepipeline every two years and is subjected to a thorough visual inspection particularly in the sealing areas for signs of damage orwear.To carry out maintenance as detailed below,no special tools arerequired but it should be noted that a torque wrench covering thetorque range required will be needed. Before carrying out any of themaintenance detailed below, please ensure that a copy of therelevant GA drawing is available to facilitate identification and locationof the component parts.

Adjustment / Replacement of Gland Packing

The Tomoe Tritec triple offset valve is supplied with a graphiteadjustable gland packing which has been packed and adjusted forimmediate use. However during service,leakage may occur and it may be necessary to tighten the Gland nut 29. This can be done withthe operator on the valve. Do not overtighten the nuts however as thismay cause damage to the valve and may lead to increased operatingtorque. If leakage persists then the Gland packings 33, 34 must bereplaced and the following procedure followed:-

[Disassembly]1. Remove the valve operator.2. Remove the Mounting plate 17.3. Remove the Key 35 on the Shaft 8.4. Remove the Set screws anti-blowout 38 and slide the Anti-

blowout collar 37 off the end of the Shaft 8.5. Remove the Gland plate 15 and Gland plate spigot 16 by

undoing the Gland nuts 29 and sliding both parts off the end ofthe Shaft.

6. Extract the Gland packings 33 , 34 using like a scriber. Do notreuse the Gland packings.

[ Assembly]1. Clean the gland packing hole of all dust and other foreign

matters.2. Insert a new packing set (Standard: both the braided outer rings

and the plain inner rings) into the packing hole taking care whensliding the rings over the Shaft not to damage them on thekeyway.

3. Replace the Gland plate 15 and Gland plate spigot 16 andtighten the Gland nuts 29 to the torque specified on the GAdrawing. Do not overtighten as this will increase valve operatingtorques and may lead to damage to the valve.

4. Replace the Anti-blowout collar 37 and tighten the Set screwsanti-blowout 38.

5. Replace the Mounting plate 17 on the top of the Body 1

ensuring that the Dowel pins 18 are refitted and that theMounting plate screws 25 are secured to the torque specifiedon the GA drawing.

6. Replace the valve operator ensuring that the Dowel pins 18 arerefitted (if supplied) and tighten the fixings. Secure the Key 35

on the Shaft 8.

Replacement of the Laminated Body Seat and/or Disc Seal

The Tomoe Tritec triple offset valve incorporates several innovativefeatures which ensure long operating life and easy maintenance.The laminated Body seat 3 and the Disc seal 6 are readily fieldreplaceable with no special tools meaning that both parts of sealingmechanism can be replaced without sending the valve back to the

factory. The Body seat 3 and Disc seal 6 are accurately machined on special fixtures so that they are not matched pairs and can bereplaced either independently or as a pair.Due to the triple offset geometry, the Body seat 3 and Disc seal 6

must be fitted into the valve with the correct radial alignment both relative to each other and relative the Shaft.To facilitate this alignment, the Body seat 3 ,Body seat retaining ring 4 ,Disc seal 6 , Body 1 and Disc 2 all have an alignment arrow

stamped on the component at 9 o’clock in the view of Disc side.These components must be assembled with the alignment arrows inthe same position. To aid initial alignment of these components andalso correct alignment of the Body seat gasket 5 and the Disc sealgasket 7 ,the drillings are of an irregular spacing and can only bealigned in 1 orientation. It is essential to tighten the Body seat screws24 and Disc seal screws 22 to the torque detailed on the GA drawing.

[Disassembly]1. The Disc 2 should be in the around 20° opened position.2. Remove the Body seat screws 24 .3. Remove the Body seat retaining ring 4 , Body seat 3 and Body

seat gasket 5 .

If the Disc seal 6 is to be replaced as a result of visual inspection,•At this point, return the Disc 2 to the fully closed position.•Remove Disc seal screws 22 and then remove the Disc seal 6

and the Disc seal gasket 7 .•These works should be done in the Disc 2 upward position.

[Assembly]

1. Ensure that the Disc 2 is in a central float position by pushingthe Disc 2 as far as possible towards the operator.If the Disc seal 6 was replaced as a result of visual inspection,

•Ensure that the gasket sealing surface on the Disc 2 is clean andfree from gasket debris etc.

•Replacement of the Disc seal 6 is the reverse of the above but itshould be used the new Disc seal gasket 7 .•This assembly should be done in the Disc 2 upward position.•The correct radial alignment of these components is achievedusing the alignment arrows.•Tighten the Disc seal screws 22 to the torque as detailed on theGA drawing.

2. Ensure that the gasket sealing surface in the Body 1 is cleanand free from gasket debris etc.

3. Replacement of the Body seat 3 is the reverse of thedisassembly described above, but it should be used the newBody seat gasket 5 .

4. The valve should be in the Disc 2 upward position and in thearound 20° opened position.

5. Replace the new Body seat gasket 5 with correct alignment.Apply a light smear of graphite grease to the topside of the Bodyseat 3 and the underside of the Seat retaining ring 4 and thenreplace these components.

6. To ensure correct positioning of the Body seat 3 , the Body seatscrews 24 should be lightly tightened only, which is a load tofeel a slight tension through the screw. Close the Disc 2 lightlyand then open again.

7. Tighten the Body seat screws 24 to about 50% torque ofspecified on the GA drawing. At this stage close the Disc using the operator so that the valve is fully closed and the Disc 2

seal 6 is firmly located against the Body seat 3 .8. Ensure that the gap between the Disc 2 and the Thrust ring

11 is within the tolerance specified on the GA drawing.9. Tighten the Body seat screws 24 to the correct torque as

detailed on the GA drawing.

22

tracing the evolution of triple offset design - internodepacwa/butterfly/triple offset firesafe...

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