Pinch Valve (Pinch Valve), also known as pinch valve, pressure valve, air bag valve, hoop break valve, etc. The use of pneumatic, electric, manual or hydraulic drive to extrude the casing, to achieve the role of switching/adjusting, electromagnetic pinch valve is a form of pinch valve. The casing (hose) is the most important part of the pinch valve, providing corrosion resistance, wear resistance and pressure ability, in addition, the electromagnetic coil, armature, spring and other internal parts also affect the life of the valve.