Product Description

Description

 

Top entry ball valve is assembled from the top of body. Stem and ball are fixed to remove the possibility of stem blowout. Graphite is chosen for packing seal and bonnet gasket is flexible graphite and metal.  The seats are inserted from both ends and sealed with flexible graphite. Spring is mounted at the seat step to help close valve. When the pressure rises, media flow into the back of seat and force the seats against the ball to guarantee the tight closure.

 

Design Features

1.Design standard acc.to ISO14313, ASME B16.34, API 6D, BS 5351;

2.One piece integral body

3.Top entry design to offer convenience maintenance

4.Full bore and reduced bore

5.Fire safe, anti-static and blowout proof stem design;

6.Emergency sealant injection;

7.Double Block and Bleed;

8.Cavity pressure self relief;

9.Low emission and live loading packing;

10.Double piston effective seat optional;

11.Optional extended stem for underground or cryogenic service.

 

Product Range

Body material: carbon steel, stainless steel, alloy steel, duplex steel
Nominal diameter:2"～60"（DN50~DN1500）

End Connection: RF, RTJ, BW

Pressure range: 150LB～2500LB（PN16~PN420）

Working temperature:-46℃～+500℃

Operation: Lever, wrench, gear, electric, pneumatic, hydraulic , electro-hydraulic actuator, etc