Stop valve refers to the valve whose closing member (valve disc) is driven by the valve stem and moves up and down along the central axis of the valve seat. It is mainly used to connect or cut off the medium in the pipeline, but cannot be used for throttling.

Basic structure of stop valve

1. Fluoroplastic fully lined j41f46 straight through type, j45f46 straight through type and j44f46 horny type stop valves have the advantages of compact structure, flexible opening and closing, strong corrosion resistance and short stroke (generally 1/4 of nominal diameter). They are widely used in petroleum, chemical and other pipeline systems as cut-off media. However, it should be emphasized that fluoroplastic lined stop valves are strictly prohibited from being used as flow regulators, To prevent the high-speed medium flow generated at the throttle from eroding the sealing surface.

2. The valve disc and the valve stem are designed as an integrated structure to prevent the possibility of the inner parts from rushing out of the valve body due to the pressure fluctuation of the pipeline. The structure is compact and the use is safe.