Friday 11 December 2015

Advantages and Disadvantages of a Poppet Valve?

Advantages of a poppet valve 

 Virtually zero leakage in closed position.

 Poppet elements do not stick even when left under pressure for long periods
 Fast, consistent response time: typically 15 ms.

Disadvantages of a Poppet Valve A poppet valve has the following disadvantages:

 Axial pressure balance is impossible and considerable force may be needed to open the poppet against the flow at a high pressure. This limits valves that have direct mechanical actuation to low flow duties.

 Generally individual poppets are required for each flow path that significantly increases the complexity of multi-port valves
 Lapping and super finishing of valves add cost.


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  4. Low wear avantages of poppet valve ?