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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Low wear avantages of poppet valve ?
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