List of featured suppliers of SOIL PIPES and FITTINGS Air Admittance Valves AGREMENT CERTIFICATE HOLDERS on Building Products Index
Soil pipes and fittings refer to the pipes and connectors used to remove waste and sewage from a building and transport it to the sewage system. Air admittance valves are used in plumbing systems to prevent negative pressure, allowing air to enter the system. Agrement certificate holders are individuals or organizations that hold certification to perform building inspections and certify that products and materials meet necessary standards.