The stop valve refers to a valve whose closing (valve flap) is driven by the valve stem and moves up and down along the center 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.
- Plastic-lined J41 straight-through, J45 straight-through, and J44 angle stop valves have the advantages of compact structure, flexible opening and closing, strong corrosion resistance, and short stroke (generally 1/4 of the nominal diameter). It is widely used in pipeline systems such as petroleum and chemical industries to cut off the medium, but the plastic-lined stop valve is strictly prohibited from being used for flow regulation to avoid the high-speed medium flow generated at the throttling port from damaging the sealing surface.
- The valve flap and the valve stem are designed as an integrated structure to prevent the possibility of internal parts rushing out of the valve body due to pipeline pressure fluctuations. The structure is compact and safe to use.
Lining material: FEP, PFA, GXPO, etc.
Drive mode: manual, worm gear, electric, pneumatic, hydraulic.






