Trunnion mounted ball valve

Main features: The ball is fixed by upper and lower trunnions, so the seat rings doesn’t afford too much flow pressure force when valve is in closed position. Under flow pressure, the seat ring floats slightly to the ball and form a tight seal. Small operating torque, small deformation on seats, reliable sealing performance, long service life are the main advantage of trunnion mounted ball valve. Trunnion mounted ball valves are widely used in long distance pipeline and normal industrial pipelines that can withstand various kinds of corrosive or noncorrosive flows.

 

Design standard :API 6D      ISO 17292

Product range :

1. Pressure range :CLASS    150Lb~2500Lb

2. Nominal diameter :  NPS        2~60″

3. Body material:Carbon steel, Stainless steel, duplex stainless steel, Alloy steel, Nickel alloy

4. End connection : RF   RTJ   BW

5. Mode of operation: Lever, Gear box, Electric, Pneumatic, hydraulic device, Pneumatic-hydraulic device;

 

Product features:

1. Flow resistance is small;

2.Piston seat, fire protection-antistatic structure design;

3.No limitation on the flowing direction of medium;

4. When valve is in full open position, seat surfaces are outside flow stream that always in full contact with gate that can protect seat surfaces, and suitable for pigging pipeline;

5.Spring loaded packing can be chosen;

6.Low emission packing can be chosen according to ISO 15848 requirement;

7.Stem extended design can be chosen;

8.Metal to metal seat design can be chosen;

9. DBB,DIB-1,DIB-2 design can be chosen;

10.The ball is fixed with a supporting plate and a fixed shaft;

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