EWWS493A Studor P.A.P.A. System


This is an assessment of the Studor P.A.P.A. System which has been designed for the purpose of relieving positive pressures within a drainage soil or waste stack. Comprising of the P.A.P.A. (Positive Air Pressure Attenuator) and Studor branded Air Admittance Valves (AAVs), the Studor P.A.P.A. System eliminates the need for the provision of anti-siphon pipework.  


Valid until 16th July 2022


Please Note: Every care was taken to ensure the information was correct at the time of publication. Any written guidance provided does not replace the user’s professional judgement. It is the responsibility of the dutyholder or person carrying out the work to ensure compliance with relevant Building Regulations or applicable technical standards.


Marley Plumbing & Drainage
Dickley Lane
ME17 2DE
01622 858888