The McAlpine CONVALVE-125 Convalve is a non-return valve designed to prevent backflow or reverse flow in plumbing systems, commonly used to stop contaminated water flowing back into the main supply. It features universal connections for easy integration into various plumbing systems and is constructed from durable materials for reliable, long-lasting performance. This valve ensures water flows in only one direction, preventing contamination and maintaining correct flow direction. The McAlpine CONVALVE-125 Convalve with universal connections is an excellent choice for a reliable and durable non-return valve in your plumbing system.