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Cavitation PDF E-mail
In a control valve handling a pure liquid, cavitation may occur if the static pressure of the flowing liquid decreases to a value less than the fluid vapor pressure. At this point, continuity of flow is broken by the formation of vapor bubbles. 
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Cavitation Index PDF E-mail
The calculation of cavitation occurring across a restriction based on the pressure drop across the restriction.
 
Cv PDF E-mail
Cv, the flow coefficient, is the relative measure of a device's ability to flow water. In a constant, established water flow, the flow coefficient is determined by the volume of water flow through the valve and the inlet and outlet pressures. When holding the inlet and outlet pressures constant, the Cv of a given valve is also constant.
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Delta P PDF E-mail
ΔP = Inlet pressure - Outlet Pressure or Pi - Po.

 

 
 
Gate PDF E-mail
A sliding sleeve structure, supported by a bronze ring and stellite hardfacing that slides over the sleeve to cover the perforations for full or partial shutoff.
 
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