O-shaped trunnion-mounted ball valve uses up-and down stem to fix spool ( bearing support type) and movable sealing seat design

O-shaped trunnion-mounted ball valve uses up-and down stem to fix spool ( bearing  support type) and movable sealing seat design. Thus can work steadier, has auto-compensation function, has great shearing ability and self-clean function between the bidirectionally sealing valve seat when revolving gapless. Especially suitable for controlling the medium such as containing fiber, containing slight solid particles suspending liquid and type of solid particles. Thus is widely used for automatic control system in industrial department as petroleum industry, chemical industry, papermaking, electric power, metallurgical industry, pharmaceutical industry, environmental protection, etc.

Characteristic

1.O-shaped fixed ball valve uses fixed ball design and comparative movement position all made from mini friction factor self-lubricant material. Therefore the operation torque is small. Besides for the long-term sealing of seal lubricating grease, gains more flexible operation.

2, valve uses high platform structure and ISO5211 connection standard for more professional installation of electric/pneumatic actuator.

3, O-shaped fixed ball valve adopt all-diameter or crinkled-diameter design for small circulating resistance.

4, The O-shaped hard sealed metallic fixed ball valve adopt the movable two-way metallic sealing structure for auto-compensation, self-cleaning and superior sealing function.

5. The O-shaped fixed ball valve adopts the fixed ball design and increased the pre-tightness spring, make the ball valve has the function auto-decompressing.

6. Each ball valve has two movable sealing seats that can seal from two directions, therefore need not consider the flow direction of the medium while installing.

7. Possess fire safe and anti-static structure to avoid the electrostatic fired the inflammable medium. Set up with electric-guide spring between stem and body, stem and ball body as well to ensure the safety of system

8. incombustible structure provided double protection. In case the sealing ring burned in the fire, all the sealing parts of the ball valve would form stiff seal structure of metal against metal.

9. Auto-decompressing structure. The medium in lumen would press the valve seat backwards through its own trust force to realize auto-decompression for the safety of the body if some abnormal pressure-rise happens caused by the gasification of the liquid medium detained in the valve pocket from temperature rise.

10. Select pneumatic, electric, and pneumatic-adjusting type, or electric-adjusting type, for details, refer to the parts of actuator and adjusting valve.