Airfit automatic aerator, PP, grey, 50 mm By lubricating the cuffs with

By lubricating the cuffs with sliding lubricant

With non-return valve

then tighten the hose clamps slightly

This sprinkler has an arc memory clutch that prevents internal gear damage

so that it can let in the necessary air

Airfit automatic aerator, PP, grey, 50 mm By lubricating the cuffs withSuitable for drain pipes. For sufficient ventilation, eliminating the need for multiple ventilation caps on the roof. Under normal conditions, the membrane seals the pipe. Effect on: Air pressure: in this case the air pressure on the membrane is low, so no contaminated air can escape. Vacuum: the vacuum created in the pipe pushes the membrane upwards, so that it can let in the necessary air. Install vertically.