Hayward SVX2VCART Cpvc Cartridge and Fpm Seal Replacement Kit for Hayward Sv Series 1/4 to 1/2-Inch Npd Solenoid Valve Cpvc cartridge and fpm seal replacement kit Fits hayward sv series 1/4 to 1/2-inch npd solenoid valve Made of cpvc, fpm material Weighs 0.8-pound