A pneumatic pinch valve is a two-way valve used to shut off or regulate harmful and abrasive media circulation. It makes use of compressed air to open or shut the valve. When it is open, the valve has no limitations and permits a broad variety of media to go across the bore. The flexible rubber sleeve in the valve keeps it safe from being contaminated.
Pinch valves are perfect to use with slurries as well as granular substances like sand cement textile fiber, gravel carbon powder, pellets, glass fragments, chipping, and so on. They are economical, reliable, and easy to use, which makes them ideal for a broad array of industrial uses.
What Is A Pinch Valve, And How Does It Function?
A pneumatic pinch valve comprises three main components: housing, an inner rubber sleeve, and end connections. The rubber sleeve fits the housing from the inlet to the outlet and is the only element in contact with the media. The connections at the end are screwed or bolted, or threaded on each end to support the valve and provide a connection for the valve. The valve is opened in its normal state (un-pressurized). If pressurized air gets applied to the valve, it presses down on the rubber sleeves, creating a pinching effect. If the rubber sleeve gets completely squeezed, the flow becomes blocked, and the valve shuts.
Contrary to the traditional valves like gate or ball valves in which discs or the ball may trap particles, the rubber sleeve inside the pneumatic pinch valve flow control is able to hold the particles within it, resulting in a perfect stop. When the pressure of air from outside is not applied to the sleeve made of rubber, the elastic rebounding properties of it, along with the force generated by the flow of media, open the valve completely. The fully open valve permits the free flow of the media, preventing the valve from getting blocked or blocked. The media will only come into contact with a rubber sleeve which allows the media to be separated, free of contamination, and without causing damage to other components.
What’s The Method Of Production?
A pneumatically operated valve (also frequently referred to as bladder valves and rubber hose valves, soft-seated valves, shut-off valves, or hose valves) comprise just three components. They include the housing, body, the end connections as well as rubber sleeves, which are able to fit inside. A pneumatic pinch valve housing material options include:
- Stainless Steel
- POM (Polyoxymethylene)
The rubber sleeve is inserted into the Pinch Valve housing. It is done by adding grease paste. For larger sizes starting from DN100 to DN100, it is possible to use a fitting kit, which comprises an installation pipe, an assembly board for mounting, the lubricant paste, and the assembly of nuts and bolts.
End Connections for Pinch Valve:
The variety of end connections offered by AKO pneumatic pinch valve design. A high-quality pneumatic pinch valve design makes nearly every work possible. They include:
- BSP screwed sockets that have an internal thread
- Threaded spigot
- Weld-on ends
The ends of the connections are screwed or bolted into the appropriate position, making the valve available to be installed in its intended field of application. There are numerous pneumatic pinch valve manufacturers in the market if you want to buy a ready-made piece.