Automatic Air Relief Safety Valve AR300 for Swimming Pool Filter

Features: The automatic air relief safety valve provides immediate release of entrapped air inside a pool filter Installing this valve in place of an existing pressure gauge or an existing manual air relief valve is strongly recommended It is easily retrofittable to existing filters of commercial and residential pools, spas and hot tubs Protects operators and equipment Quick and easy installation by homeowners or pool professionals Includes a 10â" long tube with a ¾" diameter Warranty: 3 year limited warranty