DescriptionVacuum relief valve for solar pool heating system. Available in 1.5″ or 2″. The valve is inserted in a hose and held in place with a hose clamp. It is typically installed at the highpoint of the system. The vacuum relief valve allows the water in the solar system to drain back into the pool once the circulating pump shuts off. This will only occur if the system is plumbed to drain.
