Light gauge ducting systems

Non-return valve


Non-return valves are designed to avoid backflow of air in an installation for use in overpressure, under-pressure and pressureless systems.

The inner shut-off plate in 3 mm is mounted on a lever with adjustable counter-weight.

With ball bearing on axle of inner plate for smooth running and airtightness.


Cut sheets stitch-welded and spot-welded, with 6 mm edges for lock rings.