Low Blocking Valves Keep a Free Flow of Product in any Industry

Low Blocking Valves – How They Work Low blocking valves of the rubber squeeze type (commonly recognised as the Pinch Valve) are extremely good at keeping a free passage with no dead spots or blockages. They are either operated pneumatically using compressed air, or manually with a hand wheel. Manually operated low blocking valve closed with spring pistons Both types have a specially constructed rubber sleeve or hose inside the body of the valve, which has a very high resilience and is exceptionally durable. Even when used on aggressive or corrosive media, the sleeves come in different types of rubber so can handle almost every application. For the valve to close, the rubber sleeve or tube is compressed down inside the body, and closes tightly to shut off any media. If the media is made up of large particles the sleeve will still close around it. The pneumatic type of low blocking valves have a threaded air hole on the side of the body where compressed air is supplied. Once the inner body/chamber of the valve is full with air, this makes the rubber sleeve collapse and close tightly to fully shut off the flow of product. Similarly, with the manual type of low blocking valves, the sleeve is also compressed to shut off the product flow, but by turning a hand wheel on the top of the valve this pushes pistons down onto it to close.