Marketing InformationThe Studor® P.A.P.A. is the perfect compliment to the existing range of Studor® air admittance valves (AAVs). Together they form the Studor® single pipe system (SSPS), a total solution to a building's venting requirements. Studor® air admittance valves will protect the water seal of the system's branch fixtures while the P.A.P.A effectively deals with positive pressure. This combination maintains perfect system balance, quickly and efficiently restoring even atmospheric pressure conditions throughout the system thus avoiding siphonage of any trap.