The Wennstrom check valves are mechanical devices that only allow liquid fuels to pass through in one direction. There are two basic types, straight or angled, in an adjustable or a non-adjustable version of varying dimensions. The check valves are adjustable to 0,3 - 0,7 bar
Our 1½ check valve allows a flow rate of 390l/min at 0,3bar suction.
For use at airports there is a chemically nickel-plated adjustable version as 1½”