One of the most important parts of a pinch valve is its rubber liner, as it provides abrasion and corrosion resistance, and pressure containment. Generally, the quality of the pinch valve liner determines the overall quality of a pinch valve. The pinch valve liners are the only component that comes in contact with the flowing medium. They are used for sealing, preventing contact with other valve components and any contamination from or towards the environment. Due to this reason, pinch valve liners are suitable for handling solids in suspension and slurries.
Pinch Valve Liner Characteristics
The following are the different characteristics of pinch valve liners that are used in industrial applications:
· Full port: The diameter of the pinch valve liner from inlet to outlet port remains constant.
· Double wall: They are mainly used in applications where highly abrasive materials are used. The design is simple and cost-effective, and the walls give added protection against abrasion.
· Variable orifices: The orifices make the pinch valve liner suitable for high-turndown control applications. In addition, they are also great for avoiding cavitations.
· Reduced port: The center section is reduced to fit the requirements of a controlled application.
· Material choice: A wide range of elastomer materials are available, making almost every application possible.
Pinch Valve Liners Vs Metal Valves
The main benefits of a pinch valve liner are that they are designed using superior elastomer technology and require low maintenance, giving them an edge over conventional metal valves. Since the sleeve/liner is the only wetted part in the pinch valve, they eliminate the need of using expensive metal alloys for constructing valve bodies. Moreover, this makes the pinch valve liner the only component in pinch valves that require replacement. The liners also have no seals, packing or bellows to replace.
For further product information and where to purchase, please visit the effectiveness of the pinch valve liner.
