How does an eductor work?

A pressurised motive fluid enters the nozzle and is accelerated. The high-velocity jet lowers the pressure in the suction chamber and pulls in the suction fluid. In the diffuser the mixture slows down again and the velocity is converted back into pressure at the discharge. The nozzle converges for a liquid motive and expands for gas or steam.

What is the difference between an in-line eductor and a TLA?

An in-line eductor sits in a process line and pumps, mixes or heats the fluids passing through it. A tank liquid agitator (TLA) is an eductor mounted inside the tank: the jet entrains the tank contents and the discharge stream keeps the whole tank moving, which removes stratification in pH, temperature and solids.

What do you need to select an eductor?

The goal (mixing, suspending solids, pumping, heating), the motive fluid and its pressure and flow, the suction fluid or tank contents with their properties, the required discharge pressure, and for tank mixing the tank dimensions and the turnover time you need.

Ritec partner

Eductors

Jacoby-Tarbox is our brand for eductors. We take care of sizing, selection, supply, spare parts and service. Jacoby-Tarbox →

In-line eductors and in-tank agitators (TLA) driven by liquid, gas or steam for mixing, blending, suspending solids, pumping and direct steam heating, with no moving parts.

Also known as: eductor, ejector, jet pump, venturi pump, jet mixer, tank mixing eductor, tank liquid agitator, TLA, steam injector.

Selection guide ↓

Your request

Add this to your request. We come back with a quotation or the right part.

We will ask for: Duty, Motive fluid, Motive pressure, Suction fluid / tank contents, Motive or suction flow, Discharge pressure.

Models

Connection

Fits sizeDN

2 of 2 models

In-line

Jacoby-Tarbox in-line eductor

In-line eductor (jet pump) for pumping liquids and gases, mixing and direct steam heating with no moving parts, 1/2" to 3" cast units with NPT or Class 150 flanged connections, hygienic version 1" to 4".

In-tank

Jacoby-Tarbox TLA tank liquid agitator

In-tank eductor that mixes tank contents with a recirculated liquid or a secondary liquid or gas, no moving parts, cast 3/8" to 3" in bronze, 316 SS or carbon steel, NPT, weld or flanged connections.

Not seeing the size, connection or rating you need? Most of these models are built to order and our suppliers' engineers adapt them. Send us what you have and we work it out. Send us your requirement →

Eductors use the energy of a pressurised motive fluid, a liquid, gas or steam, to pump, mix or heat another fluid. They have no moving parts, need no lubrication or direct power, and are suited to hazardous areas without explosion-proofing. Ritec supplies Jacoby-Tarbox eductors and sizes them per application.

In-line eductors

In-line eductors are installed in a pipeline for pumping liquids or gases, blending, and direct steam heating. They are built to ASME requirements, with NPT or flanged connections and wrench flats that protect the unit during installation.

Tank liquid agitators (TLA)

The TLA is an eductor designed for in-tank mixing. Tank liquid recirculated by an external pump, or a secondary liquid or gas, drives the nozzle; the jet entrains the tank contents and mixes them. Cast units range from 3/8” to 3”, in bronze, 316 stainless steel or carbon steel. Jacoby-Tarbox can simulate a tank with its AccuBlend CFD program to confirm the number of TLAs and the turnover time.

Frequently asked questions

How does an eductor work?: A pressurised motive fluid enters the nozzle and is accelerated. The high-velocity jet lowers the pressure in the suction chamber and pulls in the suction fluid. In the diffuser the mixture slows down again and the velocity is converted back into pressure at the discharge. The nozzle converges for a liquid motive and expands for gas or steam.
What is the difference between an in-line eductor and a TLA?: An in-line eductor sits in a process line and pumps, mixes or heats the fluids passing through it. A tank liquid agitator (TLA) is an eductor mounted inside the tank: the jet entrains the tank contents and the discharge stream keeps the whole tank moving, which removes stratification in pH, temperature and solids.
What do you need to select an eductor?: The goal (mixing, suspending solids, pumping, heating), the motive fluid and its pressure and flow, the suction fluid or tank contents with their properties, the required discharge pressure, and for tank mixing the tank dimensions and the turnover time you need.