Prefill Valve Calculator

Calculate prefill valve sizing for large bore hydraulic press applications with gravity feed flow

Input Parameters

Results

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Prefill Flow
GPM
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Head Pressure
PSI
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Valve Velocity
ft/s
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Fill Time (12" stroke)
seconds

Reference

Prefill Flow Q = A_cyl × speed / 231 × 60 Head Pressure = SG × 62.4 × h / (144 × 12) Valve velocity = Q / (449 × A_valve) Gravity feed requires low restriction