Jet Pumps
Jet Pump Selection Guide
Use the following tables to help select the appropriate jet pump or eductor model for your application. Need a custom size? Fill out our application form and we'll reply with the recommended size along with price & availability.
Inline Eductor
Jet Pump Sizing Request Form
We'll reply with the recommended size along with price & availability
In-Tank Eductor
Tank Eductor Sizing Request Form
We'll reply with the recommended size along with price & availability
How Jet Pumps Work
Jet pumps, also known as eductors, operate on the principles of fluid dynamics. An operating fluid media — referred to as the MOTIVE — placed under pressure enters the inlet and is forced through the nozzle where it is converted into a high-velocity stream. This high-velocity stream decreases the pressure in the suction chamber, creating a partial vacuum that draws the suction material into the chamber where it is entrained by the motive media. Once the SUCTION stream is drawn in, shear between motive media and the transported material causes both media to be intermixed and pumped out the DISCHARGE outlet, dispelled at a pressure greater than that of the suction stream but lower than that of the motive. This basic principle of fluid dynamics is what makes jet pumps work.
Selection Tables
Liquid Jet Pump Table
Using Liquid as Operating Medium
| Discharge Head Level — Model | Operating Medium | Operating Medium Pressure Range | Nom. Oper. Med. Pressure PSIG/ft Discharge Head | Discharge Head Pressure Range | Suction Lift | Minimum NPSH |
|---|---|---|---|---|---|---|
| Low — SL / LL | Liquid | 15–200 PSIG | 2.0 PSIG (SP.GR. 1.0) | to 50 FT. | to 27 FT. | 3 FT. |
| Med — ML / LM | Liquid | 15–200 PSIG | 1.5 PSIG (SP.GR. 1.0) | 40 to 80 FT. | to 27 FT. | 3 FT. |
| High — HL / LH | Liquid | 15–200 PSIG | 1.0 PSIG (SP.GR. 1.0) | 80 FT. or more | to 27 FT. | 3 FT. |
Jet Pumps for Gas
Using Air, Liquid or Steam as Operating Medium
| Model | Operating Medium | Operating Medium Pressure Range | Maximum Vacuum | Outlet Pressure (PSIG) | Functions |
|---|---|---|---|---|---|
| ML / LM | Liquid | 20–250 PSIG | 29 IN. HG. | 20 | Evac / Exh / Prime |
| MLE / ELL | Liquid | 20–250 PSIG | 29 IN. HG. | 20 | Evac / Exh / Prime |
| SG / GL | Steam, Air | 60–120 PSIG | 24 IN. HG. | 12 | Evac / Exh / Prime |
| GH / HG | Steam, Air | 20–80 PSIG | 24 IN. HG. | 20 | Evac / Exh / Prime |
Jet Pumps for Steam
Using Steam as Operating Medium
| Discharge Head Level — Model | Operating Steam Pressure Range | Oper. Steam Press. to Elevate Liquid 50 FT. | Suction Lift (with Water Temp to 120°F) | Minimum NPSH |
|---|---|---|---|---|
| Low — SG / GL | 60–150 PSIG | 150 PSIG | to 20 FT. | 13 FT. |
| High — HG / GH | 35–150 PSIG | 75 PSIG | to 20 FT. | 13 FT. |
Heating Liquids In-Tank
Using Steam as Operating Medium
| Model | Operating Medium Pressure | Max Water Temp Rise | Max Final Temp |
|---|---|---|---|
| HWN | to 120 PSIG | to 120°F | to 160°F |
| TLM | to 140 PSIG | to 120°F | to 160°F |
| LX-32 | to 140 PSIG | to 120°F | to 160°F |
| JR | to 150 PSIG | to 120°F | to 170°F |
Heating Liquid In-Line
Using Liquid as Operating Medium, Steam as Suction Stream Heat Source
| Model | Suction Steam Pressure | Max Water Temp Rise | Max Capacity |
|---|---|---|---|
| LLE | to 45 PSIG | to 182°F | 5,000 GPM |
| MLH | to 120 PSIG | to 216°F | 5,000 GPM |
| JR | to 150 PSIG | to 200°F | 700 GPM |
| SHF | to 150 PSIG | to 200°F | 700 GPM |
Mixing Liquids In-Tank
Using Portion of Tank Contents or Another Liquid as Operating Medium
| Model | Pressure Differential of Inlet to Tank Pressure | Max Capacity of Total Liquid Mixed per Unit |
|---|---|---|
| TLM | 10–100 PSIG | 12,730 GPM |
Large Inventory — Same-Day Shipment Available
Stock items ship the same day the order is received.
Jet Pumps
½" up to 3" sizes in Carbon Steel, 316SS and Bronze
Tank Eductors
⅜" up to 3" in both Carbon Steel and 316SS
Plastic Tank Eductors
PPL & PVDF in sizes ¼", ⅜", ¾", 1" & 1½" MNPT