Trunnion Mounted Ball Valves

The ball is mounted on trunnion supported in body bearings above or below the ball. The sealing is realized by spring loaded piston type seat which shut off flow when line pressure is exerted on the upstream seat. The design provides automatic relief of cavity overpressure. Trunnion mounted ball valve is available in seizes above "2” and is generally used for higher pressure. Trunnion mounted ball valve can be closed quickly and thus there is a danger of water hammer. Trunnion ball valve is widely applied in chemical engineering, petroleum, gas, metallurgy and the long-distance pipe containing hydrogen sulfide, impurities and media having strong corrosion. 

Durlmark Valve provides trunnion mounted ball valves having different specifications: API/BS/EN/JIS, PTFE Seated, Forged Steel/Carbon Steel/Stainless Steel, 3-PC. Other specifications are also available. Please feel free to contact us:

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  1. 3 Inch 1500LB Trunnion Mounted Ball Valves,ASTM A105N,RTJ Ends

    Model No.: DM-Ball-Valves-52
    China Trunnion Mounted Ball Valve Manufacturer: ASTM A105N Trunnion Mounted BallL Valve, API 6D, 3IN, CL2500 LB, RTJ Ends, SS316 Trim.
  2. 8 Inch 1500LB Trunnion Ball Valves,ASTM A350 LF2,Flanged RF

    Model No.: DM-Ball-Valves-53
    China A350 LF2 Ball Valve Manufacturer: Trunnion Mounted Ball Valve, ASTM A350 LF2, 1500 LB, 8 Inch, Flanged RF, Reduced Bore, Gear, 17-4PH Stem.
  3. 3 Inch 150LB 2-PC Ball Valves,A216 WCB,Flanged RF Ends

    Model No.: DM-Ball-Valves-54
    China 2 PC Ball Valve Manufacturer: Carbon Steel 2 PC Ball Valves, ASTM A216 WCB, 3 Inch, 150 LB, API 6D, Flanged RF Ends, Trim 1#, Blue Painting.
  4. 16 Inch 600LB 3-PCS Trunnion Mounted Ball Valves,ASTM A105,Flanged RF

    Model No.: DM-Ball-Valves-55
    China Trunnion Mounted Ball Valve Manufacturer: ASTM A105 Trunnion Mounted Ball Valves, 3-PCS, 16 Inch, 600 LB, Flanged RF Ends, ASTM A182 F6A Stem.
  5. 10 Inch 300LB 2-PC Full Bore Trunnion Mounted Ball Valves,Flanged RF

    Model No.: DM-Ball-Valves-56
    China Trunnion Mounted Ball Valve Manufacturer: 2-PC Trunnion Mounted Ball Valve, API 6D, 10 Inch, CL300, RF, ASTM A216 WCB, Full Bore, Gear Operated.
  6. 30 Inch 900LB Forged Trunnion Mounted Ball Valves,ASTM A350 LF2

    Model No.: DM-Ball-Valves-57
    China Forged Ball Valve Manufacturer: API 6FA Trunnion Mounted Ball Valves, Nylon Seated, 900LB (PN150), 30 Inch (DN750), Flanged Ends, ASTM A350 LF2.
  7. 30 Inch 600LB Nylon Seated Full Bore Ball Valves,Forged Steel A105

    Model No.: DM-Ball-Valves-58
    China Nylon Seated Full Bore Ball Valve: Trunnion Mounted Ball Valves, 30 Inch (DN750), Gear Operated, 600LB, Forged Steel A105, API 6D, Flanged Ends.
  8. 10 Inch 300LB WCB Pig Ball Valves,ASTM A105 ENP Ball,PTFE Seal

    Model No.: DM-Ball-Valves-59
    China WCB Pig Ball Valve Manufacturer: WCB Trunnion Mounted Ball Valves, ASTM A216, 10 Inch (DN250), 300LB (PN50), ASTM A105 ENP Ball, PTFE Seal.
  9. 16 Inch 600LB Flanged RF Forged Ball Valves,3-PC Body,ASTM A105

    Model No.: DM-Ball-Valves-60
    China Flanged RF Forged Ball Valve: Flanged RF Trunnion Mounted Ball Valves, 16 Inch (DN400), Three Piece Body, 600LB (PN100), API 6D, ASTM A105.
  10. 8 Inch 300LB RFTFE Seated Trunnion Ball Valves,ASTM A216 WCB,BW

     Model No.: DM-Ball-Valves-61
    China RFTFE Seated Trunnion Ball Valve: RFTFE Seated Trunnion Ball Valves, 8 Inch, Butt Weld End, ASTM A216 WCB, Gear Operator, 300LB, SS304 Ball.
  11. 8 Inch 900LB Bolted Body Forged ASTM A105 Ball Valves,Flanged RTJ

    Model No.: DM-Ball-Valves-62
    China Bolted Body Forged Ball Valve: API 6D Trunnion Mounted Ball Valves, Flanged RTJ, 3-PC, Class 900, ASTM A105, 8 Inch (DN200), Gear Operated.
  12. 1/2 Inch 1500LB Full Bore Trunnion Mounted Ball Valves,ASTM A182 F51

    Model No.: DM-Ball-Valves-63
    China F51-UNS S31803 Ball Valve: Full Bore Trunnion Mounted Ball Valves, ASTM A182 F51-UNS S31803, Peek Seated, Socket Welding, BS 5351, DN15, 1500LB.

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