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Types of Check Valves

S Bharadwaj Reddy
CHECK VALVE (NON RETURN VALVE-NRV) Check valve is used to stop back flow in a piping system. This is also called Non return Valve (NRV) Check valves are available in

Needle Valves

S Bharadwaj Reddy
A needle valve, as shown in Figure 20, is used to make relatively fine adjustments in the amount of fluid flow. The distinguishing characteristic of a needle valve is the

Pinch Valves

S Bharadwaj Reddy
The relatively inexpensive pinch valve, illustrated in Figure 18, is the simplest in any valve design. It is simply an industrial version of the pinch cock used in the laboratory

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