EDUCTORS & JET PUMPS

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Eductors

Eductors (also known as jet pumps ejectors, and Venturi pumps) are the most efficient way to pump or move many types of liquids and gases in the petrochemical, process, and power industries. Each ultra-smooth unit complies with ASME/ANSI B16.5 standards. The Tank Liquid Agitator (TLA), with no moving parts, can be used in a wide variety of open vessels or closed tanks. "In-tank" mounting eliminates the need for costly mounting structures above tanks, while investment costs are minimized by utilizing existing transfer pumps.

Water jet eductors utilize the kinetic energy of one liquid to cause the flow of another. Eductors consist of a converging nozzle, a body and a diffuser and resemble syphons in appearance. In operation, the pressure energy of the motive liquid is converted to velocity energy by the converging nozzle. The high velocity liquid flow then entrains the suction liquid. Complete mixing of the motive and suction is performed in the body and diffuser section. The mixture of liquids is then converted back to an intermediate pressure after passing through the diffuser.

Selection Guide:

Models for Pumping Liquids ( More Info.)	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

Download Our Eductors Liquid Pulling Liquids Brochure - 1.07 MB PDF

Models for Pumping Gases ( More Info,)	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

Download Our Eductors Liquids-Gases Pulling Gas Brochure - 810 KB PDF

Models for Heating Liquids ( More Info.)	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

Download Our Eductors for Heating Liquids Brochure - 718 KB PDF

Models for Solids Transport ( More Info.)	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

Models for Tank Mixing ( More Info.)	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

Download Our Tank Mixing Eductor Model TLA Brochure - (321 KB PDF)

Advantages

Self Priming

Eductors require no priming and can be used in either continuous or intermittent operation.

Simple Yet 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. These units are furnished in materials such as: ductile iron, bronze, steel, stainless steel, aluminum, PVC, FRP, Haveg, Teflon, Kynar, and polypropylene to name just a few.

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 jet eductors are inexpensive in relation to the work they do.

Their advanced design provides superior flow paths for optimum performance, while the rugged construction is your assurance of reliability on demanding applications.

They are backed by superior application engineering services, and can be supplied to meet tight delivery schedules.

In addition, they are offered at prices equal to or lower than other makers of eductors, or conventional electric pumps. See Cutaway of an Eductor

Advanced Design... Full ANSI Ratings

JRG/JT Eductors feature an advanced design to assure flows better than those of other eductors. Unlike typical cast units, which meet only a nominal pressure rating, JRG/JT Eductors meet rigorous ANSI specifications.

All of our eductors have a smooth specified finish for critical flow paths. In comparison, sections of the flow paths in competitive cast units may be left rough to keep production costs down. Also, the mixing tube section of JRG/JT Eductors has been designed to withstand the stress to which it will be subjected. This is the point at which many other makes are weak and subject to breakage during installation. All units have wrench flats to prevent damage during installation. ( Vacuum Jet Pump Shown At Right )

All models full ANSI rated*
Superior quality cast and barstock design provides superior performance.
Wrench flats at pipe connections prevent damage to unit on installation and removal.
World Class Manufacturing - per your requirements, at prices equal to or lower than those of competitive eductors - by an ISO 9001 certified manufacturer.
Computer designed flow path with finishes specified to meet maximum operating efficiency.
*non-metal parts are not specified by ANSI.

Providing a smooth flow path is critical to optimum eductor performance. As a result of this feature, the motive fluid achieves more velocity through the eductor body, and this means more energy is used for pick-up of the suction fluid. Also, better flow paths in the diverging section of the eductor allow it to achieve better discharge pressures.

More Productive Than Electric Pumps- With Lower Initial & Upkeep Costs

JRG/JT Eductors offer many advantages over electric pumps. They feature design simplicity, without rapidly rotating parts that are subject to leakage, wear and breakage. Eductors are generally small in relation to the work they do, and they are low in cost. They are easy to install and require few adjustments. They are easy to inspect and clean, and never require lubrication. In addition, they are ideally suited for use in hazardous locations, without the need for explosion proofing as may be required with electrical equipment.

Better Technical Capabilities

The Clark-Reliance Corporation staff has extensive experience in eductor technology. Our engineers have the ability to computer calculate the fluid and friction factors that can affect eductor operation. And they are experts at computer-modeling the performance of the eductor.

Customer service is at the base of all technical activities. Application engineering assistance takes the form of factory and field personnel on call for joint consultation with customers.

In short, the JRG/JT Eductor is the best choice for many applications. Whether it is educting liquid, gas, steam, or solids, we have the right eductor for you.

Standard Materials: