COUPLING 2" | IDXCPG1931 The Hayward 2" Coupling (IDXCPG1931) connector between the heater and the pool plumbing system, ensures a secure and leak-free attachment of 2-inch pipes. It is commonly used in Hayward H-Series Above Ground Induced Draft Heaters (e.g., H100ID1 and H100IDP1). How It Works: Connection Between Heater & Plumbing: The female-threaded coupling screws onto the heater's inlet and outlet ports. A 2-inch PVC pipe or hose is inserted into the coupling, securing the water flow connection between the pool and the heater. Leak Prevention: The coupling includes a rubber gasket and grommet to create a watertight seal. This helps prevent leaks and maintains proper water pressure within the system. Water Circulation Through the Heater: Water from the pool pump flows through the coupling into the heater. The heater warms the water and sends it back through the coupling to return it to the pool. Easy Maintenance & Replacement: If the coupling becomes worn, cracked, or loose, it can be unscrewed and replaced without modifying the plumbing system.
