Slide-in back-flow flap, self-acting DN 100 125 150 160 200 mm plug-in non-return flap; completely inside for retrofitting disappears completely in the tube and reduces noise due to internal rubber seal

Descripción

The non-return flap is used in round ventilation pipes to prevent air back-flow. The housing is made of galvanised sheet steel. The damper blades are made of aluminium, the axle and the spring are made of stainless steel. The inner rubber seal reduces the noise. The outer foam strip provides a good seal and attachment of the check valve in the pipe. The non-return valve is designed for operation in ambient temperatures up to 60°C, for the transport of clean air, free of coarse dust, grease, chemical vapour and other impurities.