Pipeline ball valve

 Pipeline ball valve

1、Antistatic structure

When operating the valve,due to the friction between ball and seat,will generate static electricity and accumulate on the sphere,to prevent electrostatic spark producting,set in the valve antistatic device, accumulate in the sphere of charge is derived.

2、The structure of the fire

In accidental fire or burning of the abnormal heat up to soften the non-metallic seat,a specially designed valve seat sealing surface under the action of the spring load bearing metal,and sphere form metal to metal contact,can rise the instantaneous sealing function.

3、Auxiliary seal structure

Valve seat and valve stem seal damage caused by the leakage,can pass on the valve sealing grease injection,temporary sealing effect.

 4、Double block and double emission(DDB)structure

Fixed ball valve is fully closed,the valve on the lower reaches of the valve seat so that the fluid is completely  blocked,the valve body in the cavity of the product can beexcreted through the drainage device to reduce the dirt on the valve sealing surface damage,extend the serivice life of the valve.

 5、Valves open and close position indicator

End face on the worm gear box,equipped with open and closed position indicator,when the handwheel clockwise,the valve is in closed position;When the handwheel anti-clockwise rotation,the valve is in open position.

6、Upstream sealing two-way valve

Fixed ball valve with advanced spring pre-tight upstream of the valve seat assembly design principle,regardiess of the valve in the low prewwure,high pressure,vacuumcan be a good way to achieve sealing.Each valve has two valve seats,two directions can be sealed.so the installation has no direction,regardless of which side of the valve can be used as a two-way valve.

7、Full size of reduced diameter structure

Can be selected according to the full size of reducing structure.Full bore ball valve in the channel is consistent with the inner diameter of pipeline.Not only the fluid

resistance is minimal,but also easy to pipe cleaning,and reducing valve of the same diameter of fluid resistance than the same diameter of the valve to be much lower  than the same diameter of the same diameter of the cut-off valve to lower a lot of

weight ratio of the same diameter of the valve to light around 30%,effectively reduce the production of the price,and thus gradually get a wider use.

8、Flexible operation

With stem bearing small friction coefficient and good lubricity,greatly reduced the valve operating torque,so even in the case of does not provide a tight seal grease,is also a long-term mobility to operate the valve.

9、All kinds of operating modes

Operation mode according to the need to choose manual,pneumatic,electric,gas-liquid linkage,hydraulic,etc

10、To prevent wrong operation structure

To install in the wild or prevent non-working people mistake operation,as well as in  some larger vibration occasions handle hit to produce false action.In the position of the valve fully open or close a locking hole,used to lock when necessary.Have insurance effect.

 11、Low temperature structure

Low temperature valve with long neck structure design,prevent failure under low temperature valve with long neck structure design,prevent failure under low temp- erature conditions and the valve stemseal,valve seat with automatic relief structure  design,prevent the abnormal pressure valve in the cavity medium due to heating,toensure the safe use of the valve.

 12、Buried type extension rod structure

According th the needs of users,ball valve can be designed into stem extension structure,suitable for buried pipelines laid the place of installation.

Class 150  PN1.6MPa  PN2.0MPa

 Class 300  PN2.5MPa  PN2.0MPa

QW(3、6、9)61F-150~1500Lb C、P、R、I、V

ANSI Class 150/Class300

 PN20/50

 Class600

 PN100

 Structure diagram