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