
McAlpine VP50P Push-Fit Air Admittance Valve for efficient drainage ventilation, 15.5 l/s air flow capacity, 50 mm push-fit.
The McAlpine VP50P Push-Fit Air Admittance Valve (AAV) is an essential component for modern above-ground drainage systems, designed to provide efficient ventilation where a conventional soil vent pipe cannot be installed. Its primary function is to admit air into the drainage system under conditions of reduced pressure, preventing the dangerous siphoning of water from appliance traps and ensuring the system operates safely and quietly. This valve is a critical solution for internal venting, allowing waste pipes to be terminated inside buildings without the need for external roof penetration.
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