Terrain P.A.P.A.® and Pleura Alternative Drainage Ventilation System
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Terrain P.A.P.A.® and Pleura Terrain P.A.P.A.® and Pleura Alternative Drainage Ventilation System

Alternative Engineered Ventilation System Polypipe Building Services, Terrain soil and waste products represent the industry benchmark for quality, installation, flexibility and product innovation, backed by the highest levels of customer service. Terrain systems comprise an extensive range of soil and waste drainage products, including the Terrain Pleura system, a unique alternative ventilation solution for high-rise buildings. • Unique products offering unrivalled installation options • High quality finish • Suitable for all types of commercial and residential high-rise buildings •...

Ventilation Drainage Pipework Systems The design of modern building drainage and ventilation systems has been developing since the 19th century. A minimum of 50mm of water is all that protects the occupants of a building from potentially harmful sewer gases and ‘particulates’. Therefore, a good design must consider the integrity of the trap seal and protect it from being lost. One way of doing this is to consider the air flow within the system, as this is the primary reason for trap seal breach. The flow of air within the drainage pipework system is equally as important as the flow of water...

Terrain P.A.P.A.® and Pleura Drainage Ventilation System The smarter air pressure and drainage ventilation system for high-rise buildings. Following several years of theoretical and practical research into both positive and negative transient pressure fluctuations in drainage systems, the Terrain Pleura system provides both an intelligent and integrated solution for balancing the ambient air pressure within a drainage system. Terrain P.A.P.A.® and Pleura drainage ventilation system; how it works: Terrain Pleura regulators balance negative air pressure fluctuations whilst a positive pressure...

Terrain P.A.P.A.® The Terrain Pleura 50 air regulator provides ventilation to branch pipework. It is generally installed on the pipe behind the appliance trap. The Terrain P.A.P.A.® is a positive pressure reduction device, designed to mitigate the effects of positive air fluctuations in the drainage pipework system. As water descends down the drainage stack it creates a negative pressure; if that flow is interrupted or is approaching a change of direction, the negative pressure changes to a positive pressure and moves up the pipe. This low amplitude air wave typically travels at 320m/s, the...

Benefits of the Terrain Pleura System There are significant benefits to be obtained when incorporating the Terrain Pleura alternative ventilation system: • Improved control and balancing of air pressures within the drainage pipework system • Traditional vent pipework requirements are replaced, saving costs in materials, installation, testing and time • More flexibility during the design process for engineers, architects and design professionals • Reduced risk through the installation of a fully researched and engineered system that enhances overall performance to protect water trap seals...

Design Details – Vents There are many design applications that can use Terrain Pleura valves. These isometric drawings are intended to show some of the acceptable applications, however, several alternatives are also acceptable. Common Vent Stack Vent The common vent serves two or more fixtures. The Terrain Pleura 50 can be located in close proximity to the fixtures being vented. The Terrain Pleura 100 can serve as a replacement to a traditional vent. Floor Gully Terrain Pleura 50 Floor Gully Terrain Pleura 50 Floor Gully Terrain Pleura 50 Floor Gully Terrain Pleura 50 Floor Gully Individual...

Design Details – Vents Washing Machine This is the ventilation of two or more fixtures connecting into the floor gully. The Terrain Pleura 50 can be located in close proximity to the gully to be vented. Washing Machine Circuit Vent This is a single vent serving as the vent for the group of fixtures. The Terrain Pleura 100 serves as the circuit vent. For further Technical and Design support please contact, buildingservices.technical@polypipe.com, or call 01622 795412

Terrain P.A.P.A.® Design Criteria There are several issues which need to be recognised as the drainage and vent system respond to positive transients propagation: • The pressure profile is constantly changing • The area of risk to trap water seals is dynamic and constantly changing To deal with these certainties, the Terrain P.A.P.A.® device should be distributed throughout the system. The following is only a guideline of how many Terrain P.A.P.A.® devices would be required per stack. This would vary depending on the plumbing design. Please consult Polypipe Building Services with any...

Design Details – Vents The Terrain P.A.P.A.® unit is a maintenance free product however, we recommend that it is accessible. Fluids and suds entering the device will not restrict the device’s ability to neutralise the negative effects of pressure transients, nor will they compromise the life expectancy of the device. The use of the Terrain P.A.P.A.® devices in conjunction with Terrain Pleura valves, when correctly designed and installed, is necessary to ensure full warranty of the system. Terrain Pleura Riser – with Terrain P.A.P.A.® device and Pleura valves The following standard details...

Installation Details Installation of the Terrain Pleura 50 & 100 • Terrain Pleura valve location must allow for adequate air to enter the valve. Locating the valve in a sink or vanity cabinet is acceptable • The valves must not be located in a sealed void or within solid walls • Terrain Pleura valves must be accessible • Terrain Pleura valves must be installed in a vertical, upright position. A maximum deviation (in either direction) from plumb of 5 degrees is acceptable • Terrain Pleura valves must be located a minimum of 100mm above the horizontal branch discharge levels • The Terrain...