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How to Calculate Maximum Plunger Diameter

DP = 2 × √{FL / (P × π)}


DP = Maximum Diameter of Plunger in inches
FL = Rod Load Rating in pounds
P = Operating Pressure in pounds per square inch
π = Pi = 3.14159

Maximum Diameter of Plunger [in] = 2 × √{Rod Load [lbs] / (Operating Pressure [PSI] × 3.14159)}

Rod Load Rating = 10,000 PSI
Operating Pressure = 500 PSI
Calculate: 2 × √{10,000 [PSI] / (500 [PSI] × 3.14159)} = 5.04 inches

Note: A plunger diameter smaller than 5 inches should be selected for this application

These calculations and the information provided on this page is for reference only. Power Zone Equipment is not responsible for errors or incorrect caclulations when applied to real life projects. Please use this information with care. For engineering assistance and design of equipment systems, please contact Power Zone Equipment.

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