Valve is used to control the flow of fluids in pipes, pressure and flow of the basic components. Valve at the pipeline fluid conveying system control unit, which is used to change the channel section and flow direction of medium, with the diversion, cut-off, adjustment, throttle, just back, diversion or overflow relief functions. For fluid control valves, from the simplest cut-off valve Dao Ji Wei complex of automatic control systems used in a variety of valves, their types and specifications range, the valve nominal diameter instrument valves Da from tiny to Path up to 10m of industrial pipeline valves.

(1) cut off valve is mainly used for cut off or connected to medium flow. Including gate valve, globe valve, diaphragm valve, ball valve, plug valve, butterfly valve, plunger valve, Ball Valve, needle-type meter valve.

(2) main regulating valve for regulating media flow, pressure, etc.. Including control valve, throttle, valve, etc..

(3) check valve type used to prevent the media back. Including the structure of valve.

(4) shunt valve for the separation, distribution, or mixed media. Including the distribution of various structures such as valves and steam traps.

(5) safety valve for the medium category of security when overpressure. Including all types of safety valve.

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