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By using a magnetic field rather than a spring to provide the closing force, the Magros valves reduce energy losses

Springless non-return valves introduced by Boiswood create a smaller pressure differential when open compared with conventional spring operated check valves. By using a magnetic field rather than a spring to provide the closing force, the Magros valves reduce energy losses, eliminate shutter vibration and offer improved reliability.

Traditional spring check valves produce increasing resistance as the shutter opens and the spring becomes more compressed. However, with Magros valves the magnetic closing force decreases as the shutter opens further. The minimum cracking pressure is also low at less than 0.1 bar.

The valve body is machined from solid stainless steel, with surfaces in contact with the product machined, ground, electrolytically polished or passivated. The valves are suitable for gases and liquids in the temperature range from -40degC to +50degC.

Cryogenic models are also available, suitable for fluid temperatures between -196degC (-269degC) and +50degC and with a minimum cracking pressure of less than 0.03 bar.

The main application areas for the valves are in the chemical and pharmaceutical industries, food production and laboratories using technical gases, particularly in cryogenic and ultra high purity applications.


Notes to editors

Boiswood is a well-respected supplier to many of the UK's most advanced manufacturing facilities, and is committed to hands-on service and support. Its engineers work alongside process system designers, laboratory technicians, production managers, chemists and other scientists in microprocessor production plants, analytical laboratories, pharmaceutical and semiconductor ultra high purity areas.

Image caption

Magros springless check valves from Boiswood produce a minimal pressure drop when open.

Ref: BOI1012
Date: 8 November 2012

Reader enquiries:

Tony Kent
Tel: +44 (0) 1452 330011
Fax: +44 (0) 1452 330088
Boiswood, Unit A1, Spinnaker House, Hempsted Lane, Gloucester, GL2 5FD, UK

Press enquiries:

Stephen Bailey
Antimony Communications
Tel: +44 (0) 1483 416807
Fax: +44 (0) 8707 656807
Mobile: +44 (0) 7010 716807

This press release was distributed by ResponseSource Press Release Wire on behalf of Antimony Communications in the following categories: Food & Drink, Manufacturing, Engineering & Energy, for more information visit