Pump Cylinder Diameter

The Pump Cylinder Diameter calculator computes the functional cylinder diameter based on the stroke length and volume displacement of one stroke in a pump.

INSTRUCTIONS:  Choose units and enter the following:

• (L) Stroke Length of Pump Cylinder
• (V) Volume Displacement of One Stroke of the cylinder of the pump

Pump Cylinder Diameter (D):  The calculator returns the diameter in inches.  However this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

The formula for the displacement volume of a cylinder in a pump is:

             V = π•(D/2)²•L

where:

• V is the volume displaced in one stroke of the pump
• D is the inner diameter of the pump cylinder
• L is the pump cylinder stroke length

This calculator has the above formula solved for the pump cylinder diameter:

         `D = 2•sqrt(V/(L•π))`