A pinch valve is a type of control valve that uses a pinching effect to prevent fluid flow. It is used for special purposes such as on/off services where pressures are low, and is cost-effective. However, it is important to note that pinch valves can be rendered inoperable by a ruptured sleeve.
Mechanically closed pinch valves can be rendered inoperable if the sleeve ruptures
A mechanically closed pinch valve can be rendered inoperable if the valve sleeve ruptures. They have two types: those with a hand wheel that actuates a lever and those with a pneumatic cylinder. Larger pinch valves are operated by a hand wheel, while smaller ones are operated by air pressure. Many engineers have switched to pinch valves because they offer better performance than traditional valves.
They are used for special purposes where service pressures are very low
Pinch valves are a special type of valve used in applications where the service pressures are very low. They are commonly used in wastewater treatment plants and the chemical process industries. Other industries where they are used include mining, metallurgical and foundries, and paper mills.
They are used for on/off services
Pinch valves are used to control the flow of various liquids and gases. They use a sleeve, made of rubber or synthetic materials, that closes when the pressure increases. When closed, the valve seals tightly. Pinch valves are used in sewage treatment and food processing industries.
They are cost-effective
Pinch valves are a cost-effective flow control solution for a variety of industries. They can be made from a variety of materials, including carbon steel, Ductile Iron, and aluminum alloy, and can be customized to accommodate different working conditions. They are commonly used in the pinch valve chemical, food, waste water treatment, pulp, and solids handling industries.
They prevent entrapment by the seat or in crevices
The pinch valve is a type of check valve used in processes with entrained solids. Its rubber sleeve seals droptight around the solids to prevent entrapment. This makes pinch valves safer than other types of valves. These valves also provide 100% shutoff.
They provide excellent flow control for hard-to-handle media
Pinch valves have an easy-to-use design and are ideal for applications that require excellent flow control. The valve is made up of three basic components: a valve sleeve, an elastomeric rubber tube, and end connectors. The elastomeric tube is the only part of the valve that comes in contact with the flowing media. The valve sleeve is reinforced with a fabric liner that allows the valve to operate with minimum pressure drop. Depending on the size of the valve, the end connections are bolted, threaded, or screwed. Pinch valves are also available with a variety of different types of sleeve materials.