Pneumatic Pinch Valve Manufacturer in saudi arebia
Pneumatic Pinch Valve A pinch valve is a 2/2-way valve designed to shut off or control the flow of corrosive, abrasive, or granular media. It utilizes pressurized air to open or close the valve. In the open position, the valve has no restrictions and allows a wide range of media to pass through the bore. The flexible internal rubber sleeve in the valve keeps the media isolated from the rest of the valve, preventing contamination or damage to the valve’s other components. Figure 1 is an example of a pneumatic pinch valve.
Pinch valves are suited for use with slurries and granular products like sand, cement, gravel, textile fiber, carbon, powder, pellets, chipping, and glass fragments. These valves are cost-effective, reliable, and easy to use, making them desirable in various industrial applications.
Pinch valve operation can be either mechanical or automatic. A mechanical pinch valve is a multi-turn valve, meaning the handwheel (Figure 2 labeled A) turns more than 360° during the opening and closing of the valve. The valve’s normal position is open (Figure 3 labeled A). While the handwheel turns, the valve stem (Figure 2 labeled B) lowers. A pinch bar (Figure 2 labeled C) presses against the mid-section of the pinch valve’s sleeve until the sleeve is pinched tightly (Figure 3 labeled B) and flow stops. Another mechanical pinch valve design has a lowering pinch bar and a rising pinch bar from the bottom (Figure 2 labeled F).
Automatic pinch valves operate using compressed air, hydraulic fluid, or a solenoid. While the medium operating the pinch valve differs slightly between the three automatic pinch valve types, the result is the same. A pneumatic pinch valve uses compressed air to pinch tight the center of the sleeve. A hydraulic pinch valve uses hydraulic fluid to do the same. Finally, a solenoid pinch valve uses an electric current to control the movement of a plunger that pinches down the sleeve.
Pneumatic Pinch Valve
Pneumatic Pinch Valve
Pneumatic Pinch Valve