Triple Offset, Metal Seated, Extended Performance Butterfly Valves TRICENTRIC ® Excellent Engineering Solutions
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
API 609 Category B Tricentric Class 300 Dimensions
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
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
D8.008.8813.6314.5615.8822.6825.6326.6827.8129.6340.68
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
API 609 Category B Tricentric Class 300 Dimensions
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
Plain Wafer, Lugged and Double FlangedStandard Materials of Construction
ANSI Class300 / 40 Bar –3” thru 24”
Note:Please contact Weir Valves & Controls for the many optional materials that are available to meet your specificapplication.
17
Tricentric® Valves
Plain Wafer, Lugged and Double FlangedStandard Materials of Construction
ANSI Class300 / 40 Bar –30” thru 42”
Note:Please contact Weir Valves & Controls for the many optional materials that are available to meet your specificapplication.
18
Tricentric® Valves
Plain Wafer, Lugged and Double FlangedStandard Materials of Construction
ANSI Class600 / 100 Bar –6” thru 24”
Note:Please contact Weir Valves & Controls for the many optional materials that are available to meet your specificapplication.
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