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：ASME B16.34  API 6D    API 608   ISO 17292  

End standard：ASME B16.5    ASME B16.47  ASME B16.25

Face-Face/End-End：API 6D    ASME B16.10

Testing standard：API 6D  API 598

Fire safe：API 607  API 6FA

Product range ：

1. Nominal diameter ：  NPS        2”~60″

2. Pressure range ：CLASS    150Lb~2500Lb

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

4. Working medium： water, steam, oil, petrochemicals, chemical solvents, acids, natural gas and etc.

5. Working temperature ：-196℃~425℃

6. End connection ： RF   RTJ   BW  

7. Mode of operation： 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;