Sanqiao Industrial Zone,,Oubei Sub-district,Yongjia County, Wenzhou City,Zhejiang Province,China WZ 325100 CHINA.

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Top Entry Cast Trunnion Ball Valve

Description

Tech Specs

ParametersEnglish
Pressure ratingClass150~600LB
Diameter rangeDN50~DN800 (2″~32″)
Valve body materialWCB/CF8/CF8M
Seal combinationMetal+Graphite/PTFE
Applicable temperature-196℃~450℃

 

 Industry Pain Points

Oilfield Maintenance: 90% downtime reduction in desert pipelines

Chemical Corrosion: 3x lifespan with CF8M + tungsten coating

City Gas Safety: DBB prevents leakage, EN 331 certified

 

 Trunnion-Mounted Ball Valve Cross-Section Diagram

This sectional diagram illustrates a trunnion-mounted ball valve, widely used in high-pressure pipeline applications. The design features a split body, monolithic cast construction, and a floating or trunnion-supported ball, allowing for both full and reduced bore configurations. Key features include:

  • Blowout-proof stem for operational safety
  • Anti-static device to prevent spark generation
  • Fire-safe design with certified sealing systems
  • Emergency sealant injection ports for critical shutoff
  • PTFE/Graphite packing and O-ring seals to ensure leak-tight operation

Each labeled component (1–29) corresponds to a specific part listed in the material specifications table, supporting the valve’s durability, pressure integrity, and maintainability.

FeatureDescription
Size2″ – 24″
Class150 – 1500Lb
Body TypeThe Monolithic Cast Steel Body
Ball TypeFloating & Trunnion Mounted Ball, Full & Reduced Bore
DeviceAnti-static Device
StemBlow-out Proof Stem
DesignFire Safe Design
SealantEmergency Sealant Injector

 

SpecificationStandard
DesignASME B16.34 / API 6D
Face to FaceASME B16.10
End FlangeASME B16.5
BW EndASME B16.25
TestAPI 598
Fire Safe TestAPI 607 / API 6FA
SpecialNACE MR-01-75

 

No.PartMaterial
1BodyA216-WCB, A352-LCB, A351-CF8, CF8M, CF3, CF3M, Duplex
2Seat SpringInconel X-7505, SS304, SS316
3Seat RingASTM A105+ENP, ASTM A182-F304, F316, F316L, F6, F51
4SeatPTFE, RPTFE, PEEK, PPL
5BallASTM A105+ENP, ASTM A182-F6, F304, F316, F316L, F51
6O-ringNBR, Viton
7Thrust WasherPTFE
8Body GasketStainless Steel+PTFE, SS316+PTFE
9Sliding BearingPTFE, SS304+Graphite, SS316+Graphite
10BonnetA216-WCB, A352-LCB, A351-CF8, CF8M, CF3, CF3M, Duplex