Pinch Valve vs. Diaphragm Valve – Benefits
Published: 7 February 2017 - Sarah Mead
Valves are mechanical devices that are used for controlling the flow of media and its pressure within a system. They also enable operators to change its direction and regulate the amount flowing through a process or a system. There are many types of valves available in the market, but we are going to focus on the pinch valve vs diaphragm valve, and have a look at their benefits.
This type of valve comprises of a two-piece body, typically made of iron. The lower half housing is rubber-lined, providing wear resistance, while the upper half housing consists of the diaphragm and closing mechanism. They are linear motion valves used for starting, stopping, regulating the flow of media. Diaphragm valves are commonly used in systems where it is required to isolate the entire operating system from the flowing media.
Some of the benefits of diaphragm valves are:
· Tight shut-off mechanism
· Leak proof seal
· Extremely clean
· Easy to maintain and clean
· Diminishes the amount of leakage to the environment
· Repairs can be easily made without obstructing the entire system.
This type of valve is made using a metal frame that houses a rubber wear sleeve and a shut-off mechanism. The rubber sleeve is the only part that comes in contact with the flowing media; this significantly minimizes the chances of contamination within the system. Depending on the application, the rubber sleeve is hand-built with different kinds of rubber compounds to make it suitable for the required application. Pinch valves have a full bore design with no mechanical parts and quick closing mechanism. They require little to no maintenance, additionally changing the rubber sleeve is very easy.
Some of the benefits of pinch valves are:
· Minimal turbulence
· Low maintenance
· Excellent drainage
· Very Clean
· Low weight
· Low airborne contaminants
Pinch valves are preferred over other types of valves because of their low cost, easy maintenance, and full bore design offering zero leakage. They can be used in a diverse range of applications.
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