Formula:
DP = 2 × √{FL / (P × π)}
Where:
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)}
Example:
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
