Products tagged with 'drainage ventilation uk'

The Wavin Osma OsmaW 40mm ABS Air Admittance Valve (White) 4S303W provides efficient ventilation for soil and waste systems, preventing trap siphoning. Perfect for domestic plumbing, it ensures reliable airflow and smooth drainage in 40mm pipe installations.

The Wavin Osma OsmaS 110mm ABS Air Admittance Valve (Grey) 4S306G provides reliable ventilation for soil and waste systems, preventing siphoning of traps. Ideal for domestic and commercial plumbing, it ensures smooth drainage and compliant airflow in 110mm pipe installations.