Model MP PVC Water Jet Eductors
Liquid Pumping & Mixing — Sizes ½″ through 3″
Self-priming, no moving parts, and resistant to a wide range of corrosive media. The Model MP uses pressurized liquid as the sole motive power to pump, mix, and agitate — with no electricity required.
What is the Model MP Water Jet Eductor?
The Model MP is a PVC water jet eductor — a type of ejector which utilizes the kinetic energy of a pressurized liquid to entrain another liquid, mix the two, and discharge the mixture against a counter pressure. Available in six sizes from ½″ through 3″, the Model MP is used throughout industry for pumping and mixing operations involving corrosive or chemically aggressive media.
As an example of eductor performance in a typical application, a 1″ Model MP measuring 8½″ in length will empty a 500-gallon water tank in less than half an hour, using water at 60 psig as the sole source of motive power.
Applications
Water jet eductors have numerous uses throughout the plant — lifting, pumping, mixing, and agitation of liquids, granular solids, and slurries. Specific applications include:
- Draining flooded areas and emptying tanks and sumps
- Pumping and mixing operations in oil treating systems
- Dewatering sand and coal barges
- Introducing anti-knock agents and coloring additives into gasoline
- Continuous blending, acidifying, and causticizing of oils
- Producing emulsions and pumping food products
- Pumping sand and filter clay
- Tank mixing and proportioning operations
- Lifting, pumping, mixing, and agitation of liquids, granular solids, and slurries
Key Features
Self Priming
Eductors require no priming and can be used for either continuous or intermittent operation.
Simple and Reliable
Since the basic eductor has no moving parts to wear or break, only periodic inspection is required.
Corrosion and Erosion Resistant
Because they can be made from most materials, or coated with corrosion resistant materials, eductors can be made resistant to the corrosive effects of the liquids handled and the environment.
Automatic Control
Units can be adapted for automatic operation by means of a regulating spindle or a snap valve and float arrangement.
Non-Electrical
Eductors can be used in hazardous locations where electrically operated alternatives would require expensive explosion-proofing.
Easy to Install
Either threaded or flanged connections are available. Units are compact, relatively light and can be adapted to a variety of piping configurations.
Low Cost
Water eductors are inexpensive in relation to the work they do.
How Water Jet Eductors Work
Pressurized motive liquid enters the eductor nozzle and is accelerated to a high velocity jet. This jet creates a low-pressure zone at the suction inlet, drawing in the entrained fluid. The two streams mix in the combining tube and are discharged together against back pressure through the diffuser — with no moving parts involved at any stage.
The ratio of entrained flow to motive flow depends on the pressure differential and eductor geometry. Northeast Controls engineers can size the correct model for your specific motive pressure, suction conditions, and required flow rate.
PVC Material Properties & Limitations
Model MP Design Ratings
- Model: MP (PVC)
- Available Sizes: ½″, 1″, 1½″, 2″, 2½″, 3″
- Maximum Temperature: 150°F
- Connections: Threaded or flanged
- Moving Parts: None
- Operation: Continuous or intermittent
Chemical Compatibility
- Suitable for: Dilute acids, bases, water-based solutions, many aqueous chemicals
- Not recommended: Acetone, ketones, ether, esters, aromatic or chlorinated hydrocarbons
Request a Sizing
Fill out our jet pump application sheet and we'll reply with the recommended model, price, and availability.
Jet Pump Application FormAvailable Models & Materials
Model MP available in six sizes
- Model MP — PVC, to 150°F
½″, 1″, 1½″, 2″, 2½″, 3″ - PPL (Polypropylene) — to 220°F
- PVDF (KYNAR®) — to 250°F
- Carbon Steel, Bronze, 316SS
Related Pages
Need Help Selecting?
Not sure if PVC is the right material for your service? Our engineers can help you select the best eductor for your application.
Talk to an EngineerTry the Sizing CalculatorModel MP Capacity Data
The table below shows suction capacity and water consumption for a standard 1″ Model MP PVC eductor at various operating water pressures, suction lifts, and discharge pressures. For other Model MP sizes (½″, 1½″, 2″, 2½″, 3″), multiply the 1″ values by the ratio factor shown in the Size Ratio table.
0 ft Suction Lift
| Discharge Pressure (psi) | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | |
| 0 psi | 5.85 | 8.1 | 9.5 | 10 | 12 | 12 | 12 | 12 |
| 5 psi | — | 1.4 | 4.1 | 6 | 8 | 10 | 11 | 12 |
| 10 psi | — | — | 0.28 | 2.3 | 4.8 | 6.4 | 8.8 | 11 |
| 15 psi | — | — | — | — | 1.2 | 3.4 | 5.9 | 8.6 |
| 20 psi | — | — | — | — | — | 0.3 | 3.5 | 5.9 |
| 25 psi | — | — | — | — | — | — | 0.83 | 3.9 |
| 30 psi | — | — | — | — | — | — | — | 1.7 |
| Water Consumption (GPM) — same conditions | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| 0 psi discharge | 3.55 | 5 | 6.1 | 7.1 | 7.9 | 8.7 | 10 | 11 |
| 5 psi discharge | — | 4.9 | 6.1 | 7 | 7.9 | 8.6 | 10 | 11 |
| 10 psi discharge | — | — | 5.9 | 6.8 | 7.8 | 8.5 | 9.8 | 11 |
| 15 psi discharge | — | — | — | — | 7.7 | 8.4 | 9.8 | 11 |
| 20 psi discharge | — | — | — | — | — | 8.2 | 9.7 | 11 |
| 25 psi discharge | — | — | — | — | — | — | 9.6 | 11 |
| 30 psi discharge | — | — | — | — | — | — | — | 11 |
5 ft Suction Lift
| Discharge Pressure (psi) | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | |
| 0 psi | 4.4 | 6.8 | 8.6 | 9.6 | 11 | 11 | 12 | 12 |
| 5 psi | — | 1.5 | 3.2 | 5 | 7 | 9 | 11 | 11 |
| 10 psi | — | — | — | 1.9 | 3.6 | 5.6 | 8.6 | 10 |
| 15 psi | — | — | — | — | 1.1 | 2.6 | 5.8 | 8.3 |
| 20 psi | — | — | — | — | — | — | 3.3 | 5.6 |
| 25 psi | — | — | — | — | — | — | 0.47 | 3.6 |
| 30 psi | — | — | — | — | — | — | — | 1.5 |
| Water Consumption (GPM) — same conditions | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| 0 psi discharge | 3.9 | 5.3 | 6.4 | 7.3 | 8.1 | 8.8 | 10 | 11 |
| 5 psi discharge | — | 5.2 | 6.3 | 7.2 | 8 | 8.7 | 10 | 11 |
| 10 psi discharge | — | — | — | 7.1 | 7.9 | 8.6 | 10 | 11 |
| 15 psi discharge | — | — | — | — | 7.8 | 8.6 | 9.9 | 11 |
| 20 psi discharge | — | — | — | — | — | — | 9.8 | 11 |
| 25 psi discharge | — | — | — | — | — | — | 9.8 | 11 |
| 30 psi discharge | — | — | — | — | — | — | — | 11 |
10 ft Suction Lift
| Discharge Pressure (psi) | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | |
| 0 psi | 2 | 4.6 | 6.7 | 8.3 | 9 | 10 | 10 | 10 |
| 5 psi | — | — | 2 | 4.3 | 5.9 | 7.7 | 9.9 | 10 |
| 10 psi | — | — | — | 1.1 | 3 | 4.5 | 8.1 | 9.6 |
| 15 psi | — | — | — | — | 1.1 | 2.1 | 5.6 | 7.3 |
| 20 psi | — | — | — | — | — | — | 2.8 | 5.3 |
| 25 psi | — | — | — | — | — | — | — | 2.8 |
| 30 psi | — | — | — | — | — | — | — | 1.1 |
| Water Consumption (GPM) — same conditions | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| 0 psi discharge | 4.2 | 5.5 | 6.6 | 7.4 | 8.2 | 9 | 10 | 11 |
| 5 psi discharge | — | — | 6.5 | 7.4 | 8.2 | 8.9 | 10 | 11 |
| 10 psi discharge | — | — | — | 7.3 | 8.1 | 8.8 | 10 | 11 |
| 15 psi discharge | — | — | — | — | 8 | 8.7 | 10 | 11 |
| 20 psi discharge | — | — | — | — | — | — | 9.9 | 11 |
| 25 psi discharge | — | — | — | — | — | — | — | 11 |
| 30 psi discharge | — | — | — | — | — | — | — | 11 |
15 ft Suction Lift
| Discharge Pressure (psi) | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | |
| 0 psi | — | 3.3 | 5.3 | 7.9 | 8.4 | 8.9 | 8.9 | 9.1 |
| 5 psi | — | — | — | 4 | 4.9 | 7.3 | 8.6 | 9.1 |
| 10 psi | — | — | — | — | 2.4 | 4 | 6.4 | 8.6 |
| 15 psi | — | — | — | — | — | — | 4.2 | 6.8 |
| 20 psi | — | — | — | — | — | — | 2.1 | 4.5 |
| 25 psi | — | — | — | — | — | — | — | 1.9 |
| Water Consumption (GPM) — same conditions | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| 0 psi discharge | — | 5.7 | 6.8 | 7.6 | 8.4 | 9.1 | 10 | 12 |
| 5 psi discharge | — | — | — | 7.6 | 8.3 | 9 | 10 | 11 |
| 10 psi discharge | — | — | — | — | 8.2 | 9 | 10 | 11 |
| 15 psi discharge | — | — | — | — | — | — | 10 | 11 |
| 20 psi discharge | — | — | — | — | — | — | 10 | 11 |
| 25 psi discharge | — | — | — | — | — | — | — | 11 |
20 ft Suction Lift
| Discharge Pressure (psi) | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | SC (GPM) | |
| 0 psi | — | 2 | 4 | 6.4 | 7.8 | 7.8 | 7.8 | 7.8 |
| 5 psi | — | — | — | 2.8 | 3.9 | 6.3 | 7.8 | 7.8 |
| 10 psi | — | — | — | — | 1.2 | 3.1 | 5.7 | 7.1 |
| 15 psi | — | — | — | — | — | — | 3.6 | 5.4 |
| 20 psi | — | — | — | — | — | — | 1.4 | 3.8 |
| 25 psi | — | — | — | — | — | — | — | 1.5 |
| Water Consumption (GPM) — same conditions | 10 psi | 20 psi | 30 psi | 40 psi | 50 psi | 60 psi | 80 psi | 100 psi |
|---|---|---|---|---|---|---|---|---|
| 0 psi discharge | — | 6 | 7 | 7.8 | 8.6 | 9.3 | 11 | 12 |
| 5 psi discharge | — | — | — | 7.7 | 8.5 | 9.2 | 10 | 12 |
| 10 psi discharge | — | — | — | — | 8.3 | 9.1 | 10 | 12 |
| 15 psi discharge | — | — | — | — | — | — | 10 | 11 |
| 20 psi discharge | — | — | — | — | — | — | 10 | 11 |
| 25 psi discharge | — | — | — | — | — | — | — | 11 |
Size Ratio Factors
To find the capacity for a size other than 1″, multiply the 1″ suction capacity and water consumption values above by the ratio factor for your eductor size.
| Model Number | Size | Ratio Factor | Basis |
|---|---|---|---|
| MP-04-00-PV | ½″ | 0.36 | Published |
| MP-08-00-PV | 1″ | 1.00 | Base size |
| MP-12-00-PV | 1½″ | 2.89 | Published |
| MP-16-00-PV | 2″ | 4.00 | Published |
| MP-20-00-PV | 2½″ | 6.25 | (2.5)² = 6.25 — calculated |
| MP-24-00-PV | 3″ | 9.00 | (3)² = 9.00 — calculated |
Example: A 1½″ eductor at 0 ft suction lift, 0 psi discharge, 40 psi operating pressure has a suction capacity of 10.0 × 2.89 = 28.9 GPM and water consumption of 7.1 × 2.89 = 20.5 GPM. A 3″ eductor under the same conditions would be 10.0 × 9.00 = 90.0 GPM suction capacity.
* 2½″ and 3″ ratio factors are calculated from the diameter-squared relationship (d/1″)². Confirm with Northeast Controls for exact sizing on these larger sizes.
You Might Also Need
Related Products
Liquid Jet Pumps
Pump, transfer, or lift liquids. Carbon Steel, 316SS, Bronze. In stock ½″–3″.
Gas Jet Pumps
Evacuate tanks, purge piping, create vacuum. Steam or air motive. 316SS standard.
Steam Jet Heaters
Inline direct-contact heating. Models 301, 320 & 340. No moving parts.
What's Next?
Continue Your Research
Sizing Calculator
Estimate flow rates and motive requirements for your application.
Product Selector Wizard
Answer 3 questions and get an instant product recommendation.
Request a Quote
Submit your process conditions and we'll size and price it for you.
Prefer to talk it through? Call 1+201-419-6111