Extraction check pneumatic valve characteristics and the advantage of its structure

extraction check the role of pneumatic valve is not only embodied in an industry, many industries can use it. Work is the biggest on the protection of steam turbine generator set, because the generator in the process of operation there will be a lot of danger happening, such as reduced pressure suddenly in steam turbine load rejection.
a pneumatic valve product characteristics, extraction check
and sealing surface surfacing Cr series stainless steel or cobalt-based hard alloy, have good wear resistance, stable and reliable sealing performance.
, heavy hammer through extension rod and fork on the pin shaft, used to balance and rocker heavy torque and prevent the occurrence of water hammer. When the medium flows forward, help to open the pneumatic valve, and balance the pneumatic valves in the operation and reduce the vibration.
, when medium positive flow, cylinder inferior vena intake, together with a heavy hammer, pneumatic balance disc is located in the full open position. When the reverse flow of the medium, the cylinder piston inferior vena rapid pressure release, pneumatic disc in. Seconds down quickly.
2, extraction advantage
check pneumatic valve structure. Is spring return type actuator cylinder or hydraulic cylinder, and with the pneumatic valve closing action is relatively independent, actuator failure does not affect the closing action.
。 Pneumatic valve seat sealing surface inclination Angle, reduce shut down time, lighten the impact, protect the security of the equipment itself and the pipe.
。 The design and manufacture ANSIB acceptance criteria adopted. , E or JB/T, strength and sealing performance completely conform to the standard needs, the vacuum pneumatic valve and vacuum test, the whole life to meet user requirements.
。 Pneumatic valve is designed for the rocker connection with pneumatic valve stem, but with pneumatic valve seal face since the rightness of, ensure the sealing face.
, close the open sets limit mechanism, avoid open a bit damaged.
。 Cylinder hydraulic cylinder wall coating wear-resisting corrosion resistant layer, can increase longevity, reduce resistance, pneumatic valve, flexible and reliable.
。 Aimed at different temperature, the main material is carbon steel or steel, high temperature sealing surface carbide surfacing.
。 Pneumatic valve is equipped with damping heavy hammer, can balance the closed kinetic moment, prevent not hammer.
。 Equipped with pneumatic actuator, pneumatic valve switch position signal output valve open position on indicator.

pneumatic valve body cavity with streamline design, flow capacity, reduce the resistance of pneumatic valve.