AIR ADMITTANCE VALVES

AIR ADMITTANCE VALVES eliminates the requirement of primary and secondary drainage vent pipes, reduces cost of piping, reduces sizing of pipes and saves construction cost (smaller shafts can be constructed), Soil and Waste pipes can be interconnected and terminated in the shafts, they do not require to go to the terrace, eliminating the perpetual problem of RW leakage, encourages use of Single Stack system of drainage disposal since the basic issue of vent management is taken care off. - .