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Liquid Ring Vacuum Pumps

Liquivac pumps can handle combinations of liquids, gases and fine solids. Manufactured by renowned pump engineering specialists Tomlinson Hall, Liquivac can perform a huge range of operations.

The pumps are widely used by utilities companies, chemical processors, food and drink producers, environmental engineers, desalination plants and sealife centres, and have a proven track record across a wide range of industry sectors.

Recognised for its durability and reliability, Liquivac’s innovative liquid ring vacuum design can accommodate solids of up to 2mm in diameter during the transfer of liquids, air, foam, emulsions and vapours. The technology is also highly effective when used in pump priming systems to increase process efficiency and to protect larger vacuum pumps from damage.




How it works...

Liquivac boasts an innovative liquid ring vacuum design and incorporates a twin start helical rotor mounted eccentrically in a cylindrical pump barrel.

On installation, the pump should be primed with a suitable liquid and during start-up, a liquid ring is created, forming a seal between the rotor and casing, creating a series of crescent-shaped cavities, travelling from suction to delivery. In the priming cycle, air is drawn into the cavities, compressed and discharged through the pump.

Once fully primed, the cavities are filled with liquid, displacing any liquid warmed in the priming cycle.

Liquivac’s cast iron or 316 stainless steel pump body, combined with a stainless steel rotating element, makes the pump extremely robust in operation.

Liquivac characteristics:

- Discharge heads to 3 bar
- Suction lifts to 8.5m
- Long suction lines - 500m+
- Priming rate to 40m3/HR
- Flow rate - liquids to 35m3/HR
- Can accommodate solids of up to 2mm in diameter

View the Liquivac animation

When used as a vacuum pump, service liquid is required from an external source. This does not have to be totally clean and the system can be arranged for recirculation.

Vacuum systems

- Vacuum drainage systems
- Multiple sump evacuation
- Liquid – powder blending
- Vacuum filtration
- Vacuum cooling and heat exchange
- Sewage evacuation

Liquivac pumps are available in the following models:

LV10 / LV20 / LV30 / LV40

View our Performance Curve Charts here >

View our Installation, Operation & Maintenance Manual >

Find out what Liquivac can do for your business - call  +44 (0)1642 379500 or email us.



Serving industry

Innovative, versatile, durable and easy to install, Liquivac pumps can play an integral part in key operations across a wide range of industry sectors. Its ability to manage combinations of liquids, gases and fine solids gives Liquivac a high degree of flexibility, and its ability to pump from long suction lines allows it to provide an effective solution in hazardous or difficult to access environments.

Its wide range of uses encompass sump evacuation, vessel emptying, pump priming, gas extraction, draining ship holds, well pointing and more. The Liquivac pump is viewed as a trusted product across numerous organisations, from water companies to meat processing firms.

Key applications include:

• Chemical processing
• Seawater extraction
Land remediation
• Utilities
• Food and drink processing


Client experience

  • Northumbrian Water
  • St Andrew’s University
  • BASF
  • Veolia
  • British Antarctic Survey
  • Oman National Power Corporation
  • Infood
  • HEPU

About Us

Our company

Founded in 1919, Liquivac’s manufacturer, Tomlinson Hall, has vast expertise in the pump industry – and a proud history of innovation.

The company has manufactured Liquivac pumps in the UK since 1996 and supplies, services and repairs all types of pump and transmissions.

A joint-founding member of the Pump Distributors Association (PDA), Tomlinson Hall is an approved global distributor of many leading pump brands, working with high profile clients in the UK and in overseas markets, including Europe, the Middle East, North America, South America and Asia.

Based in Billingham, North East England, the company has won the Pump Distributor of the Year Award in the British Pump Industry Awards four times, most recently in April 2014.

Get in touch

Tomlinson Hall & Co Ltd
Lagonda Road, Cowpen Lane Industrial Estate, Billingham TS23 4JA
Telephone: +44 (0)1642 379500


For more information on Tomlinson Hall, click here