Pinch valves are used for controlling the flow of media. They are available in various types and are used in a number of industries. Some of the applications include sludge, granular and corrosive mediums. They are made from a variety of materials, including nitrile, EPDM, silicone and natural rubber. The main component of a pinch valve is the rubber sleeve that contacts the media. The other parts are sleeve clamps, end connectors, and the valve body.
Pinch valves are commonly used in the water, sewage, coal and chemical industries. They can be used for a variety of applications, ranging from flotation control to isolation and regulating the flow of gaseous and abrasive products. They can also be used in the food and plastic industries.
Pinch valves are easy to operate. They are opened and closed by air pressure. They are available in a variety of dimensions and can have clamps and seals to fit a wide range of applications. The sleeve can be fixed using lug clamping screws. However, it should be noted that pinch valves can leak if the sleeve becomes damaged. This can allow the media to enter the control circuit.
Pinch valves are designed with smooth walls that minimize line vibration. This also allows the pinching bar to have free movement. The pinch valve manufacturers tube can be flexible and can be made from PU, silicon or other elastic materials. They are not recommended for high temperature applications. They can also be manufactured from a variety of material, including aluminum and cast iron.
Some of the common materials for the pinching bars are nitrile, butyl, and synthetic polymers. The valves can be installed with or without gaskets, depending on the application. The valves should be equipped with a pressure limiter. They should also be shut down after use.
Pinch valves are commonly used as a part of sewer cleaning machines. They are used to remove blockages in sewer pipes. They are also used in the pulp and paper mills, glass industry, and the mining industry. They are often installed in sludge discharge lines. They are also used in power plants and wastewater treatment plants.
They are also known as pneumatic pinch valves. These valves are actuated by air pressure in the annular space between the sleeve and the body. They can be designed to handle a variety of slurries, and are especially suited for applications with explosion-proof requirements. They are ideal for handling abrasive, fibrous and corrosive products.
Some of the leading manufacturers and exporters of pinch valves are Ankleshwar, Morbi, Dahej, Chattisgarh and Vapi. They offer a variety of pinch valves, from simple screw-operated to heavy duty pneumatic cylinder operated open body pinch valves. The manufacturers in China provide a complete product range, offering a wide selection to meet specific requirements. They are also able to provide a full service, and are known for their competitive and affordable prices.
In order to select the best pinch valves for your application, it is important to consider the durability of the components. You should also consider the driving and sealing components. It is a good idea to look at the size of the body as well as the size of the tube. It is also helpful to check the durometer of the tube.