Trunnion Ball Valve

1. Description of Trunnion Ball Valve:

    The Trunnion Ball Valve is also called trunnion mounted ball valve. The ball of trunnion ball valve is fixed and it doesn't

    move with medium pressure. It has floating seats. The seats move with the medium pressure to press the ball 

    against the sealing O-Ring to ensure sealing reliability. Bearing could be mounted on either top shaft or bottom 

    shaft by which it will reduce the operation torque.  To ensure tight sealing at low pressures, special springs are 

    applied to force the seats against the ball.

2. Design Features:

    Sealant Injecion Devices, Double Block and Bleed, Anti-Static Design, Fire Safe Design.

    Side Entry / Top Entry, Full Port / Reduced Port, Soft Seated / Metal Seated, Anti-Blow-Out Stem

3. Design Standards:

    API 6D, API608, BS5351, ASME B16.34

4. Size an Pressure:

    2" ~ 40" (DN50 ~ DN1000), 150LB~2500LB

5. End Connection and Operation Type:

    RF, RTJ, BW, NPT;  Lever, Worm Gear, Electrical, Pheumatic, Hydraulic

6. Material Specification:

    Body: WCB, LCB, A105, CF8, CF8M, CF3, CF3M, F304, F304L, F316, F316L, LF2, F51, Aluminium Bronze

    Ball: A105+ENP/TCC/CCC, F304, CF8, CF8M, CF3, CF3M, Aluminium Bronze

    Stem:  A186 F6, F304, F316, F304L, F316L, Aluminium Bronze

    Seat Ring:  PTFE, NYLON, PEEK, HF, or Metal Seated

    Gaskets & Packings: PTFE, Flexible Graphite or Stainless Steel

    O-Ring: Viton;  Spring: AISI 6160 17-17PH, 17-7PH

    Trunnion: A186 F6, F304, F316, F304L, F316L, Aluminium Bronze

    Bolts & Nuts: B7/2H, B8M/8;    Gland: F6, F304, F316, F304L, F316L, Aluminium Bronze

    Bonnet: WCB, LCB, A105, CF8, CF8M, CF3, CF3M, Aluminium Bronze