EWWS493B Terrain Pleura System


This is an assessment of the Terrain Pleura 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 Terrain Pleura AAVs, the Terrain Pleura Systems eliminates the need for the provision of anti-siphon pipework.  


Valid until 16th June 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.


Polypipe Limited t/a Polypipe Terrain
New Hythe Business Park
College Road
ME20 7PJ
01622 795200