Zero-leak bottle trap with a 1/4 turn nut for quick and reliable installation. Easy to clean with simple 1/4 turn opening. Features an 80mm water seal. Thanks to bi-injection technology, all washers are overmoulded onto the body, providing total protection against leaks. The air system function replaces a traditional ventapipe air admittance valve, protecting against noise and bad smells. Telescopic design offers up to 60mm adjustment for ease of installation with existing pipework.