Pinch valves are air piloted devices that open and close tubes and thereby control the flow of fluids in various applications. This type of valve is especially suitable for controlling corrosive media. They are also used for regulating and isolating abrasive materials. These valves can be made of a number of different materials, including natural rubber, nitrile, and silicone.
The major applications of pinch valves are in mining, sand, cement, and glass. They are also utilized in wastewater treatment plants, chemical processing, and electric power. They are also known as clamp-off valves or air sleeve valves. They are usually designed to allow full throttling of up to 10%-95% of their rated flow capacity. However, they are not compatible with vacuum applications.
Pinch valves have a smooth inner wall, which helps to reduce turbulence. This makes it easy for the valve to shut off. The liner walls are also abrasion resistant and can withstand the impact of sharp particles. This is a critical consideration when selecting a pinch valve. This is because a media with sharp particles can damage the inner bushing and allow it to protrude into the media stream.
A number of manufacturers offer these valves. Some of the pinch valve manufacturers top manufacturers include Dahej, Ankleshwar, Vapi, Morbi, and Bharuch.
They are available in various sizes. You can choose from small, medium, and large pinch valves. Some manufacturers have a wide variety of products to meet your specific application needs. They can provide full service and offer competitive pricing. They also have an extensive product range that includes many different types of valves. Some of the valves are air operated, pneumatic, or semi-automatic.
Some of the factors that should be considered when choosing a pinch valve include its service life, driving components, and material. You should also think about the temperature requirements of the application. The body material should be lightweight and resistant to corrosion.
The sleeve of the valve should also be abrasion resistant. This should be determined by the flow media characteristics of the valve. The sleeve can be made of nitrile, natural rubber, and synthetic polymers. The material should have good abrasion resistance and be able to tolerate application temperatures. The sleeves can be fixed with lug clamping screws.
Pinch valves can be used to regulate or stop the flow of any medium. This can include water, sand, sludge, mud, and solids. They are also commonly used for regulating and controlling compressed air.
Some pinch valves are designed to throttle up to 10%-95% of their rated fluid flow. Some valves are equipped with limit switches to automatically shut off the motor when the pinching bar is fully closed or open. These valves are also designed to handle various other slurries. They are usually used in mining and coal conveying. They are also used in various other processes, including the smelting of minerals and the treatment of sludge.
The global economy is growing rapidly and the clean environment is attracting governments to adopt advanced technology. This is increasing the demand for sewer machines, drain cleaning, and other related activities. This is helping to create a demand for pinch valves.