Eductor - Jet Pump Selection Guide

Use the following tables to help select the appropriate eductor.

Models for Pumping Liquids SL ML HL SG HG
Operating Media Liquid Liquid Liquid Steam Steam
Operating Pressure (PSIG) 15-200 15-200 15-200 30-150 20-150
Pressure Recovery % 10-15 30-35 40-50 15-20 30-35
Maximum Suction Lift 27 ft 27 ft 27 ft 20 ft 20 ft
Maximum NPSH Required 3 ft 3 ft 3 ft 13 ft 13 ft


Models for Pumping Gases ML HL SG HG
Operating Media Liquid Liquid Steam, Air Steam, Air
Operating Pressure (PSIG) 20-200 15-200 30-150 20-150
Maximum Vacuum 29 in Hg 29 in Hg 24 in Hg 23 in Hg
Discharge Pressure 15 15 12 35
Applications Evacuate, Exhaust, Prime


Models for Heating Liquids MLE ML MLH ULJ ULH TLA
Heating Process In-Line In-Line In-Line In-Line In-Line In-Tank
Max Temp Rise 180 200 215 200 200 125
Maximum GPM Heated 5000 5000 5000 700 700 2000
Steam Press Range Vac-45 Vac-100 Vac-120 0-150 0-150 10-140


Tank Mixing Table

Models for Tank Mixing TLA
Operating Media Liquid, Air
Operating Pressure (psig) 10-150
Suction Pick-up Ratio 4:1
Plume Length 1 ft per psi
Maximum GPM Motive 3200
Viscosity Range 1-2000 cP


Solids Transport

Models for Solids Transport SL ML HL ULJ SG
Operating Media Liquid, Air Liquid, Air Liquid, Air Air Air
Operating Pressure (psig) 5-100 5-100 3-100 15-50 20-100


Pumping Liquids

  • Pumping Liquids. For such a usage, a liquid motive is used to pump another liquid. This is extremely beneficial in areas where an electric pump might present an explosion hazard, or where electric lines might not be available such as when draining a sump. Other typical applications include pulling an acid or base into a water stream in order to dilute that acid or base, and for boosting the NPSH (Net Positive Suction Head) of another pump.

Heating Liquids

Heating Liquids. Using steam as the motive force to pump a liquid also works to heat the liquid. For example, when drawing water from a pond, the need exists to warm that water as it's being supplied to a process. The eductor performs two functions in one. Other applications include heating process fluids in line, cooking slurries in line, and heating reactor jackets.

Pumping Gases

Pumping Gases. In this case, liquid is again used as the motive force. One typical application is the aeration of a liquid in order to reduce BOD (Basic Oxygen Demand) of the fluid. Others include exhausting vapors or gases from a room, evacuating a vessel, scrubbing fumes from a gas, or creating vacuums. In addition, should there be a need to inject air, ozone, chlorine or other gases into a process liquid, eductors will perform that function efficiently and effectively.


Eductors are the most efficient way to pump or move many types of liquids and gases. There are literally hundreds of uses for eductors, particularly in the petrochemical, process, and power industries.

Eductors work in just about any place where there is a need for a more efficient way to pump liquids and solids. The new line of JRG/JT Eductors offers advanced design features and superior technical capabilities to create the eductor for virtually any application.

Replace Penberthy Jet Pumps

Looking to your Penberthy Jet Pump with a Jet Pump for better performance? Our eductors feature the newest ideas in eductor design and manufacture, ideas that provide real user benefits. Our eductors match Penberthy eductors in connection sizes & dimensions. There is no need for repiping or resizing. The product is supported by a knowledgable staff, large inventory and World Class Manufacturering.

Penberthy Model Replace With Jacoby: Product Page
Penberthy Model LL Model SL see site page
Penberthy Model LM Model ML see site page
Penberthy Model LH Model HL see site page
Penberthy Model GL Model SG see site page
Penberthy Model GH Model HG see site page
Penberthy Model HLM Model MLH see site page
Penberthy Model ELL Model MLE see site page
Penberthy Model RJ Model MLE see site page
Penberthy Model CTE Model TLA see site page
Penberthy Model TME Model TLM see site page
** PVC units eductors match metal eductors.

Large Inventory

Jet Pumps are in stock from 1/2" up to 3" sizes.  Jet Pumps are stocked in Carbon Steel, 316SS and Bronze.

Tanks Eductors are stocked in sizes from 3/8" up to 3" in both Carbon Steel and 316SS.   We stock PPL & PVDF materials in sizes from 1/4" thru 1-1/2".

Pressure Ratings

While our competition design their eductors for nominal pressure ratings, NCI Eductors are designed and produced to meet rigorous ASME/ANSI specifications.

Our eductors and jet pumps offer ratings about 30% higher than most competitors.

NCI Eductors are rated at 316SS: 720 psig @ 100 F | Carbon Steel: 740 psig @ 100 F | Bronze: 500 psig @ 100 F