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Frequently Asked Venturi Systems Questions - Answered By EST Venturi Systems

Can jet pumps replace mechanical pumps?

In some cases, it's possible to replace expensive mechanical pumps with jet pumps when an existing motive source is available under pressure, such as water, gas, or steam, and the mixing of these motive fluids with the suction fluid or solid is acceptable.

Are there any moving parts in jet pumps?

No, there are no moving parts in jet pumps, and as such no need for lubrication. As a result, the initial cost of lightweight jet pumps can be a small fraction of the cost of a heavy and maintenance prone mechanical pump.

Do jet pumps require priming?

No. They are self-priming when given a little discharge backpressure and are often used to prime centrifugal pumps. They are limited by the vapor pressure of the motive liquid and suction liquids.

Can jet pumps be used for mixing?

Yes. Jet pumps are perfect for mixing compatible fluids like gases, liquids, and steam. Intimate mixing in the jet pump body and venturi tail section makes them excellent mass transfer devices, especially for scrubbing gases with liquids. When steam is used as a motive, as a side benefit, suction water can be heated.

Is the installation of a jet pump difficult?

No. It is very easy to install a jet pump. It is as easy as installing simple pipe and fittings. Installation costs are very low. Jet pumps are built to match standard threaded and flange connections such as NPT, BSP, ISO, threaded and ANSI, 3A, DIN, JIS flanged with jet pump body ratings of pressure and temperature to match. Connections of every kind are available, even sanitary construction and clamps.

Do jet pumps require electricity?

As mentioned above, a jet pump needs only an available motive fluid source under pressure to operate. Jet pumps are intrinsically safe as a result and of no threat in an explosive environment.

As mentioned above, in some cases, it is possible to replace expensive motor-driven mechanical pumps with lightweight jet pumps when an existing motive fluid source is available.

Can solids plug or clog jet pumps?

Jet pumps can typically pass solids as large as 1/4 the discharge connection size. In some cases, jet pumps are used to convey solids hydraulically and pneumatically.

Is cavitation a problem in jet pumps like in mechanical pumps?

In fact, some jet pumps use a cavitation vacuum to induce fluid suction flow. This enhances the mixing of the motive and suction fluids. The streamline construction of the jet pump makes it virtually resistant to cavitation wear.

Can jet pumps operate at high viscosity ranges?

Viscosity applications for jet pumps are limited. For applications over 100 centipoises, please refer the request to our application engineers for special consideration.

Can jet pumps operate in corrosive environments?

Jet pumps are simple devices that can be machined, fabricated, or cast in many materials of construction such as all the alloy metals, industrial plastics, and ceramics available with all the conventional coating, lining, and hardening processes. Special Jet pump designs are available with sacrificial wear parts.

Can jet pumps operate in extreme temperature conditions?

The lack of moving parts and little need for maintenance make jet pumps ideal and proven in weather extremes like the poles and desserts. Custom heat traced and insulated designs are offered at a very reasonable cost.

Can jet pumps run under dry suction conditions?

In fact, jet pumps are ideal for running with dry suctions since they are self-priming and require no lubrication like typical mechanical pumps.

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If you're looking for more answers to your venturi systems & product questions, ask us today with a phone call to 281-685-6621, or complete our online request form.