Stuffing box pressure

 

STUFFING BOX PRESSURE S097

The pressure in the stuffing box is somewhere between suction and discharge pressure, but closer to suction pressure.

The general formula for stuffing box pressure in a single stage, end suction, centrifugal pump is:

As an example:

  • Discharge pressure = 50 psi
  • Suction pressure = 10 psi

Stuffing box pressure = (50-10) / 4 +10 = 20 psi