The Booster Heaters by Hatco: Back Pressure Relief Valve for Hatco Water Heaters/Booster, valve relieves pressure when unit is heating, on models that a check valve is required on the supply line, to be plumbed over an open site drain. ( Hatco - BPRV )
The Booster Heaters by Hatco: Back Pressure Relief Valve for Hatco Water Heaters/Booster, valve relieves pressure when unit is heating, on models that a check valve is required on the supply line, to be plumbed over an open site drain. ( Hatco - BPRV )