SPECK VU │ VH │ VZ Liquid Ring Vacuum Pumps

SPECK VU, VH, VZ Liquid Ring Vacuum Pumps:

Proven technology for a wide range of applications.

SPECK VU, VH, and VZ series liquid ring vacuum pumps provide suction and compression for various gases and vapors, utilizing natural cooling from the service liquid. This technology keeps operating temperatures low, enhances mechanical reliability, and ensures an excellent equipment service life.

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The range is available in several configurations to precisely meet different vacuum level requirements:

VU Series : single-stage pumps designed for rough vacuum with minimum pressures between 120 and 150 mbar absolute.
VU-351 / VU-451 Series : single-stage versions equipped with valves to achieve high vacuum down to 33 mbar absolute.
VH Series : two-stage pumps without valves, offering high performance down to 33 mbar absolute.
VZ Series : low-noise, two-stage pumps, also available with magnetic coupling and connection dimensions identical to the VH series.

Variants	Features
Single-stage design	Technology designed for rough vacuum applications, offering robust construction, reliable operation and simplified maintenance.
Two-stage design	Enables a deeper vacuum, down to 33 mbar absolute, with excellent operating stability.
Version with valves	Available on selected pumps in the range to improve performance at low pressures and optimise the ultimate vacuum level.
Valveless version	Simplified design that reduces the number of mechanical components and enhances reliability during continuous operation.
Magnetic coupling version	Available on selected pumps in the VZ series to provide enhanced sealing and reduce the risk of fluid or gas leakage.
Special material configurations	Various combinations of cast iron, stainless steel or non-ferrous materials are available to suit the properties of the pumped fluids and corrosive environments.

Main performance features – SPECK VU, VH, and VZ Liquid Ring Vacuum Pumps

(Indicative data, tailored to your setup)

Technical Specifications	SPECK VU, VH and VZ Liquid Ring Vacuum Pumps
Maximum Flow Rate	Up to 1,589 m³/h
Ultimate Pressure	Down to 150 mbar
Technology	Single-stage or two-stage liquid ring vacuum pump
Applications / Compatible Gases	Suction and compression of dry, humid and saturated gases and vapours
Inlet Connection	DN40 to DN200
Outlet Connection	DN40 to DN200
Installed Motor Power	1.1 kW to 45 kW
Weight	20 kg to 640 kg
Rotational Speed	Up to approximately 3,400 rpm
Electrical Supply	50/60 Hz motor – 230/400 V
Standard Construction Materials – SPECK VU, VH and VZ Liquid Ring Vacuum Pumps
Pump Casing	Cast iron
Shaft	Steel
Impeller	Bronze
Mechanical Seal	Carbon / chrome-plated steel

Key benefits for your processes – SPECK VU, VH, and VZ Liquid Ring Vacuum Pumps

SPECK VU, VH, and VZ liquid ring vacuum pumps are designed to ensure reliable, long-lasting operation in industrial environments.

Simple and proven operating principle.
Low-temperature compression thanks to the service liquid.
Robust construction using high-quality materials.
Limited number of components for enhanced reliability.
O-ring sealing to minimize maintenance requirements.
Optimized design for a long service life.
Wide range of configurations to adapt to the constraints of any process.

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Typical applications SPECK VU, VH, and VZ Liquid Ring Vacuum Pumps

SPECK VU, VH, and VZ liquid ring vacuum pumps are particularly well-suited for the following industrial applications:

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. Chemical and petrochemical processes

. Pharmaceutical and biotechnology industry

. Paper and cardboard manufacturing

. Plastic processing and extrusion

. Food processing and Vacuum packaging

. Industrial drying and evaporation

. Degassing of liquids and viscous products

. Distillation and solvent recovery

. Vacuum systems for industrial processes

. Extraction of wet, saturated, or vapor-laden gases

. Applications requiring quiet operation or high Vacuum (VH and VZ ranges)

. Processes requiring high robustness against corrosive or condensable gases, with specialized material configurations

Why choose GEFI for your SPECK VU, VH, and VZ Liquid Ring Vacuum Pumps?

As a specialist in industrial vacuum equipment, GEFI supports you in selecting the SPECK VU, VH, or VZ Vacuum pump best suited to your process and operational constraints. Our expertise covers needs analysis, system sizing, material selection based on the fluids handled, and the integration of reliable, long-lasting vacuum solutions. By choosing GEFI, you benefit from:

Personalized technical support to define the most suitable configuration and expertise in the various SPECK technologies (single-stage, two-stage, and high vacuum).

Advice on materials and specific configurations tailored to your application, along with assistance in optimizing the energy efficiency and reliability of your installations.

A single point of contact for your industrial vacuum projects and responsive support before, during, and after commissioning.

Drawing on experience across numerous industrial sectors, GEFI applies its expertise to your projects to provide a high-performance, sustainable solution perfectly tailored to your operational requirements.

Ask for your custom study

Our experts support you in choosing, integrating and optimizing your industrial vacuum solution.

SPECK VU │ VH │ VZ Liquid Ring Vacuum Pumps