Cast Trunnion Ball Valve

The trunnion ball valve is used to cut off or connect the media in various of Class150~Class2500. The valves made of different materials are suitable for various media such as water, steam, oil, liquefied gas, natural gas, coal gas, nitric acid, oxidizer, urea and etc. The driving modes include manual operation and electric operation. The connection ends can be flange or butt welding.

Technical Specification
Nominal diameter: NPS 2～NPS 56
Operating temperature: -46℃～121℃
Operating pressure: CLASS 150～CLASS 2500
Material: WCB、A105、LCB、LF2、CF8、F304、CF8M、F316, etc.
Design standard: API 6D、ISO 17292
Structural length: ASME B16.10
Connecting end: ASME B16.5、ASME B16.25
Test standard: API 598、API 6D
Operation method: Handle, worm, motor-drive unit, pneumatic drive unit
Application fields: Water, petroleum and natural gas
Remarks 1: A locking device is provided to prevent misoperation of valve.
Remarks 2: Valve stem flyout prevention structure design, to prevent accident due to flyout of valve stem caused by abnormal pressurization in the chamber
Remarks 3: Fireproof and antistatic design
Remarks 4: The valve stem and the valve seat are equipped with an injection system.
Remarks 5: DBB (double block and bleed) function
Remarks 6: Full bore of valve convenient for pigging, of small flow resistance and high flow capacity

Structural Features
1. Double Block And Bleed(DBB)
2. Low Operating Torque
3. Emergency Sealing Device
4. Fireproof Structure Design
5. Anti-static Structure
6. Reliable seat sealing structure
7. Single Sealing (automatic Pressure Relief In Middle Cavity Of Valve)
8. Double Sealing (double Piston)
9. Safety Relief Device
10. Secial Structure Of Automatic Pressure Relief Towards Upper Stream
11. Blow-out Proof Stem
12. Corrosion Resistance And Sulfide Stress Resistance
13. Extension Stem