triple offset, metal seated, extended performance butterfly valves

Triple Offset, Metal Seated, Extended Performance Butterfly Valves

TRICENTRIC®

ExcellentEngineeringSolutions

WEIR VALVES & CONTROLS

Weir Valves & Controls brings competitive unity to a group ofspecialist valve manufacturing companies located across the globe.Combining and maximizing the strategic aims of the membercompanies, Weir Valves & Controls develops a versatile,comprehensive and proactive relationship with customers,contractors and end users.

A rigorous program of information management ensures eachmember company is aware of new developments on a worldwidebasis. This means that the group is able to take a more anticipatoryrole in defining the future needs and expectations of the market byfully utilizing the organization’s critical resources to create and addvalue to its customers while generating a real competitiveadvantage for Weir Valves & Controls.

Weir Valves & Controls is a leading world renowned OEM ofisolation and control valve products for the global Energy sector.

The division continually meets market demandswith proven reliability and flexibility by utilizing engineered productconfiguration systems and a continuous program of IT developmentin the move towards eBusiness.

With a comprehensive range of engineered valve products, WeirValves & Controls has developed an extensive global installed baseand expertise across a wide range of industry sectors:

• Power Generation

• General Industrial

• Oil & Gas Production

• Refining

• Petrochemical

• Chemical

• Pulp & Paper

• Desalination

Tricentric® Valves

Atwood &Morrill

Tricentric Sebim

Sarasin – RSBD

Hopkinsons

BlakeboroughControls

MAC Valves

Batley Valve

Flowguard

3 Way valvesButterfly valvesCheck valves Gate valvesGlobe valvesIsolation devicesSafety valves

Triple Offset Metal Seated Butterfly valves

Isolation & Control Butterfly valves

Choke valves Globe Control valvesSevere service valves

& superheaters

Pipeline Surge absorbers Pulsation dampers Thermal Expansion

compensators

Check valves Gate valves Globe valves Isolation Devices Safety valves

Ball valves Pipeline Check valves

& inegrated systemsThrough Conduit

Gate valves

Nuclear Safety Valves

Change Over valvesFlame arrestersLow Pressure and

Vacuum valvesPilot Operated Safety

Relief valvesPressure Relief

Manhole coverSpring Loaded Safety

Relief valvesTank Blanketing system

TRICENTRIC®

1

2

Tricentric® Valves

WEIR Valves & Controls supplies major valves and flowcontrol equipment to the Power Generation andProcess Industries.

Specializing in large, high pressure and specialapplication valves, its products are found in NuclearPower, Fossil Power, Hydrocarbon Processing, Pulp &Paper and Marine applications. WVC USA holds anASME ‘N’ and ‘NPT’ stamp, an ISO 9001 certificateand is an approved supplier to many large customers.

Meeting the customer specifications is simply the firststep in delivering whole lifecycle performance. WeirValves & Controls can offer ongoing processenhancement, with tailored maintenance, repair andoperational support.

Table of Contents

WEIR Valves & Controls ............1-2

The Proven Performer ..............3-4

Features ........................................5-6

Principle of Operation ..................7

Performance ..................................8

Valve Body Styles ......................9-12

Testing ..........................................13

Special Applications ....................14

Plain Wafer, Lugged and DoubleFlanged Standard Materials ofConstruction ............................15-18

Tricentric® Valve – MaterialPressure TemperatureRatings ....................................19-20

ANSI and DIN Valve Data ............21

3

Tricentric® Valves

The Proven Performer

Today’s demanding projects require a quality valvethat is reliable, cost-effective, true to specifications andmost importantly, proven in the field – over a widerange of applications and conditions.

Throughout the world, today’s engineers, as well asproject and maintenance managers, specifyTRICENTRIC® Valves for their Power, Processing,Refinery and most critical applications worldwide.

WEIR Valves & Controls designs, manufactures andservices engineered, high-specification valves inaccordance with a comprehensive quality assuranceprogram. The design standard is ANSI B16.34with international and customer standards invokedas required.

Pulp & Paper Mills

• Isolation and check valves for steam• Alcohol reduction process applications• Green, Red and Black liquors• Oxygen systems• Lime mud slurries• Boiler water• Stock solutions

Refineries

• Fuel oil storage isolation valves• Steam supply stop and control valves• Sulphur condenser switch valves• Flare gas hydrogen and sour gas control

and isolation• Refinery Desulphurization cooling water• Dirty hot cracking gas stop and control• Fluidized catalytic cracker, stop and

control valves

Nuclear Power Plants

• Containment isolation• Pump discharge isolation• Core spray system• Brackish cooling water• Service water system

Tricentric® Valves for nuclear power plants meet orexceed ASME III, 10CFR50 App. B and B31.1requirements.

Nuclear

Refinery

4

Tricentric® Valves

Power Plants

• Pump isolation• Condenser cooling• Extraction steam isolation• High temperature quarter turn valves• Heat exchanger, suppression system and condenser

cooling water isolation valves

Steel Mills

• Blast furnace gas isolation control and check valves• Coke battery stop valves• Recirculation pump discharge• Compressor discharge• Expander inlet and bypass control valves

Chemical Plants

• Hydrogen gas• CO2 Vapor• Brine• Liquid or Gaseous oxygen• Propylene• Steam• Ethylene • Cooling water• Emergency closure valves to isolate in

1 second or less• Flare inlet control and manifold isolation

Special Applications and Options

• Special Body, shaft and disc materials for high temperature gases and heated slurries such as SO2

and lime kiln feed.• Steam turbine generation stop and control valves• Geothermal plant applications• Molten sulphur• CO2 recovery• Steam jackets• Large sizes• Propane gas• High cycling applications• NACE trim materials• Cryogenic

Combined Cycle Power Plant

Chemical

5

Tricentric® Valves

Features

Tricentric® Extended PerformanceButterfly Valve

The unique triple offset metal - seat design of theTricentric® Valve provides exceptional performance anddependability over a broad range of applications andservice conditions. Designed and built to theapplicable requirements of ASME B16.34 and API STD609, Tricentric® valves provide positive sealingperformance from vacuum to 1500 PSI (103 Bar) andat temperatures from -425°F (254°C) to + 1500°F(816°C).

Advantages

• Quarter turn convenience

• A tight metal-to-metal sealing system

• Long Life SeatsTricentric geometry prevents seat or seal wear byeliminating interference between the body seatand disc mounted seal.

• Torque seated, self-compensating for temperaturedifferences.

• Available in a wide range of materials includingadvanced alloys capable of resisting micro-geologicalcorrosion.

• Fire-safe, tested to API 607

• Cryogenic proven – zero leakage at -425°F

• Shell tested to ASME and MSS standards

• Blowout proof shaft per API-609

• Non binding/sticking seats

• Excellent flow and control characteristics

• Reliable service at conditions more severe than othervalves can endure.

• Seat tightness performance

• Zero leakage – bi-directional

• API-598 resilient seated performance

• Class 6

6

Tricentric® Valves

Tricentric® Guarantees a “Tight” Seal

The Prussian Blue Seat Test clearly demonstratesTRICENTRIC®’s superior, leak-tight, positive seal. Dyeapplied to the disc produces seating line contactsonly-with absolutely no rubbing or wear. The non-jamming seating of TRICENTRIC® valves remainsbubble tight after thousands of cycles.

Designed to never rub or gall, TRICENTRIC® Valvesremain bubble tight after more than 50,000 cycles.

Seat contact does not occur until thedisc is seated closed.

On opening the seal lifts cleanly off the seatat all points allowing long life and quality

sealing for many cycles.

Dye Test showing no wear orrubbing

Seat Contact

7

Tricentric® Valves

Cone

Tricentric® Operation

The TRICENTRIC® principle of operation is geometry inmotion. Both the seat in the body and the seal on thedisc are surfaces of a cone which is sectioned at anangle. The valve shaft is located slightly to one side ofthe seat center and a little bit above the plane of theseat. Its center of rotation is also somewhat offset fromthe axis of the imaginary cone which extends from thesurface of the seat.

When the valve is closed, the surface of the seal andthe seat are in full contact at all points. Any effort totry to further close the disc (rotate it into the seat)increases the sealing force and tightens the valve. Thisallows the valve to be bi-directionally tight.

Opening the valve, or rotating the disc away from itsseat, results in the seal moving away from the seat atall points. This action eliminates rubbing or sliding ofthe seating surfaces thus avoiding wear.

Tricentric features true non-rubbing seating surfacesfor long life and tight shutoff.

Tricentric® Sealing System

TRIPLE OFFSET

Offset #1 The shaft is positioned forward of the valveseat providing an uninterrupted seating surface.

Offset #2 Centerline of disc rotation is located awayfrom the centerline of the seat allowing the seal to liftoff and away from the seat on opening.

Offset #3 The cone axis is offset from the centerlineof the seal to provide a conical sealing surface thatallows the seal to rotate in and out of the seat withoutinterference, sliding or jamming.

Principle of Operation

Cone S urface

Seal

Pla

ne

Seal Axis

Shaft Axis

Cone A xis

Offset#1

Offset#2

Offset#3

8

Tricentric® Valves

Extended Performance

Performance

Pressure/Temperature

TRICENTRIC® Metal Seated Valves outperform resilientseated and high performance butterfly valves at highpressure and temperature levels.

SERVICE RANGES

TRICENTRIC® Valves outperform conventional and highperformance butterfly valves over all service ranges.

TRICENTRIC®

Has 3-Way eccentricity. The metal seat is capable ofvery tight shut off at temperatures up to 1200ºF orhigher.

HIGH-PERFORMANCE

The eccentric shaft results in an uninterrupted sealwhich can be used at higher pressures andtemperatures. However, the resilient seats wearand can plug with solids.

CONVENTIONAL

Center shaft which penetrates a resilient seal. Suitablefor low temperature, low pressure services only.

vs.

or

Pressure/Temperature

Service Ranges

9

Tricentric® Valves

Valve Body Styles

Lug Valve

Lug

Compact light weight design. May be used for deadend service.

SIZE346810121416182024

A4.505.506.507.759.0010.5011.5012.8113.5614.8717.50

B13.1313.3813.8821.2523.2528.4425.8828.8833.2537.6340.63

C10.2510.6818.2513.8815.9318.3820.5021.5023.8824.2528.50

D8.007.5011.3812.1313.6315.8823.6823.8125.6831.6830.03

E1.882.132.252.502.813.193.634.004.505.006.06

F1.952.362.632.633.384.382.362.362.362.364.06

G8.008.0012.0018.0018.0024.0014.0018.0024.0030.0030.00

API 609 Category B Tricentric Class 150 Dimensions

SIZE346810121416182024

A6.757.889.1910.0011.6312.1317.5619.0021.3821.6325.56

B15.1316.5022.5024.8829.2519.4433.5634.8842.7543.1846.81

C9.5012.8115.3117.8819.1320.6323.2524.5026.4427.8831.63

D8.008.8813.6314.5615.8822.6825.6323.6827.8129.6340.68

E1.882.132.312.883.253.634.635.255.886.257.13

F1.952.363.384.384.382.362.362.362.114.063.81

G8.0010.0018.0018.0024.0014.0024.0018.0036.0036.0036.00


10

Tricentric® Valves

Wafer Valve

SIZE346810121416182024

A4.505.506.507.759.0010.5011.5012.8113.5614.8717.50

B13.1313.3813.8821.2523.2528.4425.8828.8833.2537.6340.63

C10.2510.6818.2513.8815.9318.3820.5021.5023.8824.2528.50

D8.007.5011.3812.1313.6315.8823.6823.8125.6831.6830.03

E1.882.132.252.502.813.193.634.004.505.006.06

F1.952.362.632.633.384.382.362.362.362.364.06

G8.008.0012.0018.0018.0024.0014.0018.0024.0030.0030.00


SIZE346810121416182024

A6.757.889.1910.0011.6312.1317.5619.0021.3821.6325.56

B15.1316.5022.5024.8829.2519.4433.5634.8842.7543.1846.81

C9.5012.8115.3117.8819.1320.6323.2524.5026.4427.8831.63

D8.008.8813.6314.5615.8822.6825.6326.6827.8129.6340.68

E1.882.132.312.883.253.634.635.255.886.257.13

F1.952.363.384.384.382.362.362.362.114.063.81

G8.0010.0018.0018.0024.0014.0024.0018.0036.0036.0036.00


Wafer

Light weight and compact body dimensions

Valve Body Styles

11

Tricentric® Valves

ISO 5752 Double Flanged

Meets API 609 5th Edition, Blowout Proof Stem,Bearing Protectors, Shaft Retention Ring. Allows forbolt through installations for greater safety.

ISO 5752 Double Flanged Valve

SIZE346810121416182024

A4.805.257.008.199.4710.9411.1812.4413.4414.8817.50

B12.9513.8817.6323.1224.7829.1325.7529.1313.5037.8841.13

C10.0011.0913.2015.6817.5619.0321.0322.4223.8125.1929.88

D8.007.5011.3812.1313.6315.8823.6823.8125.6831.6830.03

E4.445.005.516.006.507.007.508.508.759.0010.50

F1.952.362.632.633.384.382.362.362.362.364.06

G8.008.0012.0018.0018.0024.0014.0018.0024.0030.0030.00

ISO 5752 Short Series Tricentric Class 150 Dimensions

SIZE346810121416182024

A4.805.257.008.199.4710.9412.8114.1315.6316.9420.19

B12.9514.8820.7823.3828.0024.9431.5629.8840.1942.1944.81

C10.0011.0813.4416.2517.8820.2521.8423.2824.9427.8129.94

D8.008.8813.6314.5615.8822.6825.6323.6827.8129.6340.68

E4.445.005.516.006.507.007.508.508.759.0010.50

F1.952.363.384.384.382.362.362.362.114.063.81

G8.0010.0018.0018.0024.0014.0024.0018.0036.0036.0036.00

ISO 5752 Short Series Tricentric Class 300 Dimensions

Valve Body Styles

12

Tricentric® Valves

Gate Valve

SIZE346810121416182024

A4.805.257.008.199.4710.9411.1812.4413.4414.8817.50

B12.9513.8817.6323.1224.7829.1325.7529.1313.5037.8841.13

C10.0011.0913.2015.6817.5619.0321.0322.4223.8125.1929.88

D8.007.5011.3812.1313.6315.8823.6823.8125.6831.6830.03

E8.009.0010.5011.5013.0014.0015.0016.0017.0018.0020.00

F1.952.362.632.633.384.382.362.362.362.364.06

G8.008.0012.0018.0018.0024.0014.0018.0024.0030.0030.00

B16.10 Tricentric Class 150 Dimensions

SIZE346810121416182024

A4.805.257.008.199.4710.9412.8114.3115.6316.9420.19

B12.9514.8820.7823.3828.0024.9431.5629.8840.1942.1944.81

C10.0011.0813.4416.2517.8820.2521.8423.2824.9427.8129.94

D8.008.8813.6314.5615.8822.6825.6323.6827.8129.6340.68

E11.1212.0015.8816.5018.0019.7530.0033.0036.0039.0045.00

F1.952.363.384.384.382.362.362.362.114.063.81

G8.0010.0018.0018.0024.0014.0024.0018.0036.0036.0036.00

B16.10 Tricentric Class 300 Dimensions

Gate Valve Face to Face

Dimensions to ANSI B16.10Can directly replace Gate Valves in line

Less weightLower costEasily automated

Valve Body Styles

13

Tricentric® Valves

Testing

Cryogenic Tested

TRICENTRIC® Valves have proven seal reliability for liquid oxygen, liquid nitrogen, liquid and natural gasservices as required by NASA, aerospace industry and oil field recovery services.

In an independent laboratory test, a TRICENTRIC®

Valve measured zero leakage with Helium. After morethan three hours submerged in liquid Nitrogen at-321°F and 145 psig the TRICENTRIC® Valve then metall specification requirements!

Tight shut-off, zero leakage at temperatures as low as-425°F. Liquid oxygen, nitrogen and liquid natural gas.

Fire Tested

TRICENTRIC® Valves meet or exceed API 607, FourthAddition.

Sulphur Tested

TRICENTRIC® breaks through solidified sulphur inseating and bearing areas with no seal damage norinterruption of service. Make cheater bars obsolete.

14

Tricentric® Valves

Reduced Port Valves

Reduced Port Valves to match reducing flanges wherejacketed piping systems are required. Valves can besteam jacketed and equipped with steam traced shafts,if required.

Steam Jacketed Valves

Steam Jacketed Valves with steam traced shafts formolten sulphur and pitch applications.

Acid Gas/Tail Gas Valves

Triple offset seat design assures a frictionless seal forhigh cycle and extended valve life. Torque seateddesign assures tight shut-off at low and high pressures.Steam jacketed and steam traced shafts when requiredby application. No elastomers or teflon.

Seawater Valves

• Nickel-Aluminum Bronze• Monel• DuplexCryogenic Valves

Tight shut-off, zero leakage at temperatures as low as -425°F. Liquid oxygen, nitrogen and liquid natural gas.

Air Actuated Valves

Special Applications

Size & Materials

Complete ProductRange

Sizes 3” – 96”

ANSI Classes150 – 600

Materials

• Carbon Steel

• Stainless Steel

• Duplex Steels

• Aluminum Bronze

• High PerformanceAlloys

15

Tricentric® Valves

Plain Wafer, Lugged and Double FlangedStandard Materials of Construction

ANSI Class150 / 16 Bar –3” thru 60”

Note:Please contact Weir Valves & Controls for the many optional materials that are available to meet your specificapplication.

16

Tricentric® Valves




17

Tricentric® Valves




18

Tricentric® Valves




19

Tricentric® Valves

Tricentric® Valve – Material PressureTemperature Ratings

20

Tricentric® Valves

Note:

1. Per ASME B16.34 – Permissible but not recommended for prolonged use above 800° F.

2. Per ASME B16.34 – Use normalized and tempered material only.

3. Per ASME B16.34 – Use of a flanged valve in CL150 ANSI above 1000°F not recommended.

4. Per ASME B16.34 – At temperatures over 1000°F, use only when the carbon content is 0.04% or higher.

5. Per ASME B16.34 – Use solution annealed material only.

6. Per ASME B16.34 – Use annealed material only.

7. Long exposure above 600°F may cause embrittlement.

8. Use of this material may result in a reduced differential pressure rating. Contact sales representative.

9. Upper temperature limit reduced to 850°F in oxidizing media

10. Upper temperature limit reduced to 850°F in oxidizing atmosphere.

11. Upper temperature limit is specified as a general guide based on code, specification and minimum torsionalseating requirements. Use of material above this limit may violate these requirements. Contact a Weir sales orengineering representative for specific application material evaluation.

21

Tricentric® Valves

ANSI and DIN Valve Data

Weights (pounds)

Typical Flow Characteristics

For control applications a wide variety of actuators andaccessories can be provided. At moderate pressuredrop conditions, turndown approaching 100 to 1 canbe achieved because of the camming action of thedisc opening. The disc lifts off the seat very quicklyand an equal percentage control curve is producedbetween 15° to 75°.

Flow Coefficent (Cv)

FLG ISO

FLG ISO

FLG ISO

868 1678 2500 3510

ExcellentEngineeringSolutions

Weir Valves & Controls USA Inc.

285 Canal StreetSalem MA 01970-4595USA

Tel: 978 744 5690Fax: 978 741 3626Email: [email protected]

Companies of the WEIR Valves & Controls Division: Head Office:WEIR Valves & Controls

Tel: +44 (0) 1484 820465Fax: +44 (0) 1484 820220Email: [email protected]

SALES

SALES/MANUFACTURING

Sales/Manufacturing

WEIR VALVES & CONTROLS UK LTDTel: +44 (0) 1484 820820Fax: +44 (0) 1484 820484Email: [email protected]

WEIR VALVES & CONTROLS - FLOWGUARD LTDTel: +44 (0) 1663 745976Fax: +44 (0) 1663 742788Email: [email protected]

WEIR VALVES & CONTROLS - SEBIM SASTel: +33 (0) 4 42 07 00 95Fax: +33 (0) 4 42 07 11 77Email: [email protected]

WEIR VALVES & CONTROLS - FRANCE SASTel: +33 (0) 3 21 79 54 50Fax: +33 (0) 3 21 28 62 00Email: [email protected]

Regional Sales Offices:

CHINATel: +86 10 8427 5536Fax: +86 10 8427 7049Email: [email protected]

MALAYSIATel: +60 3 2287 3560Fax: +60 3 2287 3561Email: [email protected]

DUBAITel: +971 4 881 9868Fax: +971 4 881 9870Email: [email protected]

KOREATel: +82 2 515 2887Fax: +82 2 516 6581Email: [email protected]

AUSTRALIATel: +61 2 4349 2999Fax: +61 2 4349 2900Email: [email protected]

SOUTH AFRICATel: +27 1 1929 2906Fax: +27 1 1929 2925Email: [email protected]

LOCAL REPRESENTATIVE

A list of worldwide agents is available on request

triple offset, metal seated, extended performance butterfly valves

Documents