Jet Pumps will operate for extended periods without maintenance or parts replacement. Install suitable strainers in the inlet lines to eliminate scale or foreign matter in the lines to reduce faulty operation.

Penberthy L Series liquid operated jets are available for low, medium and high discharge pressures. Each model is available in 15 sizes from 1/2 to 12 inches suction and discharge.

The following information is needed for selection of the L Series:
Temperatures of operating and suction liquids.
Available operating liquid pressure PSIG (hm).
Available volume of operating liquid GPM (Qm).
Suction lift in feet of water (hs).
Discharge head in feet of water (hd).
Required pumping capacity GPM (Qs).
Specific gravity of operating liquid.
Specific gravity of suction liquid.
Viscosity of operating liquid.
Viscosity of suction liquid


Penberthy G Series steam operated jet pumps are designed for low head (Model GL) and high head (Model GH) conditions. Each model is available in 15 sizes from ½ to 12 inches suction and discharge.

The following information is needed in determining the correct G Series unit.
Available operating steam pressure PSIG (hm)
Available operating steam, lbs. / min. (Qm)
Suction water temperature in °F (Ts)
Suction lift in feet of water (hs)
Discharge head in feet of water (hd)
Required pumping capacity GPM (Qs)