Springless non-return valves cut pressure drops

14 November 2012

Springless non-return valves introduced by Boiswood are said to 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 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 said to be suitable for gases and liquids in the temperature range from -40°C to +50°C.

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