CAST STEEL TRUNNION BALL VALVE

Product description

The trunnion ball valve is used to cut off or connect the media in various of Class150~Class2500. Trunnion mounted cast steel ball valve is full port ( FP) or reduced bore (RB), two piece Split body or three piece bolted body, Trunnion mounted cast steel ball valve is trunnion Mounted type,blow-out proof stem, anti-staic, optional bocking device or stem extension, optional direct mounting to ISO 5211 structure,Trunnion mounted cast steel ball valve is a form of quarter-turn valve which uses a hollow or Solid, perforated and floating ball to control flow through it. Trunnion mounted cast steel ball valve is open when the ball's hole is in line with the flow and closed when it is pivoted 90-degrees by the ball valve handle.

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

Materials of main parts