Spring less non-return valves
from STÖHR cut pressure drops
Springless non-return valves introduced by STÖHR ARMATUREN 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 of MAGROS 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 -40 °C to +50 °C.
Cryogenic models are also available, suitable for fluid temperatures
between -196 °C for nitrogen (down to -271 °C for
helium in special execution) and +50 °C and with a minimum
cracking pressure of less than 0.03 bar.
Both warm and cold versions of MAGROS will be on exhibition
at Valve World 2012 at the stand of STÖHR ARMATUREN
(hall 3A, stand 82).
Various modifications or special executions are available