Check Valves

PVC check valves are designed to prevent backflow in aquarium plumbing, hydroponic systems, irrigation lines, and general water transfer setups. These true union check valves allow water to flow in one direction while automatically stopping reverse flow that can overflow sumps and protect filtration equipment.

Built from durable PVC with smooth internal flow paths, they provide dependable operation with minimal pressure loss and easy service access when needed. Ideal for aquarium return lines, hydroponic systems, and other PVC plumbing installations where reliable backflow prevention is essential.