Pinch valves are used for regulating the flow of fluids. They are also called hose valves and are used in many applications. They are very useful in controlling the flow of a variety of media, including oils, water, and chemicals. They are commonly found in the cement industry and a variety of other industries. However, they are not suitable for pulsing or vacuum applications. They have three main parts: the body/housing, the rubber sleeve, and the end connections.
A pinch valve’s inner sleeve is made from a variety of materials. This includes synthetic polymers, elastomers, and other rubber compounds. The choice of material will depend on the application’s requirements and the type of medium to be processed. The sleeve must be able to withstand the flow media’s minimum and maximum temperatures. It must also be corrosion-resistant.
A pinch valve’s sleeve must also be resistant to abrasion. This is because it is often the only part of the pinch valve that comes into contact with the medium. If it is not abrasion resistant, it can wear out quickly. It is important to choose a sleeve that is easy to replace and can withstand abrasion. In addition to being abrasion-resistant, it needs to be able to withstand the pressure of the medium.
In addition to the sleeve, the pinch valve has a body/housing that is made of either butyl or silicone. The sleeve can be made of a variety of materials, including nitrile, EPDM, and natural rubber. These are all elastomers, but each has its own characteristic. The sleeve is an integral part of the pinch valve, so it is a critical component.
The pinch valve’s sleeve should be able to withstand the temperature of the fluid and the pressure of the medium. It should also be able to withstand the rubber pinch valve on-off valve cycle. Choosing a sleeve that has high elasticity helps it to resist abrasion.
When selecting a pinch valve sleeve, it is also important to consider the flow pattern. A pinch valve with a streamlined flow pattern will last longer. In the case of abrasive fluids, the sleeve should be double-walled to provide more protection. This will ensure a more accurate and stable flow.
In addition to the sleeve, a pinch valve is also composed of the inner bushing. This can be made of a variety of materials, such as nitrile rubber, fluoro rubber, silicone resin, and more. It is important to find an elastomer that is abrasion resistant and able to handle the minimum and maximum temperatures of the medium. If the pinch valve is used for abrasive or faty media, conductive nitrile rubber (NBR) is a good choice. It is also a good choice for food grade requirements.
A pinch valve is used in a wide variety of applications, including pharmaceutical and biopharmaceutical production, the iron and steel industry, and the food and beverage industry. They are ideal for proportional control applications. They are available in a variety of shapes and sizes. They are also available as actuated or manual products.
