Terrain P.A.P.A. & Pleura Vent System
The Terrain P.A.P.A.® (Positive Air Pressure Attenuator) is a positive pressure reduction device that works with the Pleura Vent System which is an air pressure regulator acting as an air admittance valve - both designed to mitigate the effects of positive and negative air fluctuations in single stack drainage systems. This allows fresh air into the branch pipework or to the top of a waste or soil stack and ultimately eliminates the need for a traditional piped secondary vent system, meaning that there's no need for vent penetrations in the slab and drastically reducing the requirement for vent penetrations through the roof.
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| 2024 Terrain and Mecflow Product List |
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| Terrain P.A.P.A. and Pleura Brochure |
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| Technical Bulletin 2016 Issue 2 - P.A.P.A. and Pleura Valves |
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| Technical Bulletin - Terrain Pleura |
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| Technical Bulletin 2024 Issue 4 – Terrain Gradients and Fall rates |
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| Terrain PAPA and Pleura Vent Specification Clause |
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| Terrain P.A.P.A. BBA Certificate |
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| BS EN 12380 Air Admittance Valves |
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| Declaration of Performance Terrain Air Admittance Valves |
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| Declaration of Performance Terrain pleura 50 and 100 |
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