Pentair MasterTemp/Max-E-Therm Heater Manifold Kit

This kit is specifically designed for Pentair MasterTemp 400NA and 400LP models, as well as the Max-E-Therm 400. It is not compatible with lower BTU versions, so please verify your heater's BTU rating before purchasing.

Yes, this is a comprehensive kit. It includes the manifold bypass valve, water pressure switch, connector tube kit, zinc plug, and the necessary O-rings to ensure a complete, watertight seal.

If you are comfortable with basic plumbing and pool equipment maintenance, this is a straightforward installation. However, because this involves gas heater components and water pressure systems, we recommend consulting a professional if you are unsure about the assembly process.

Using genuine parts ensures that the materials are heat- and chemical-resistant, which is critical for the longevity of your heater. Third-party alternatives may not offer the same precise fit, which can lead to leaks or inefficient water flow.

Common signs include visible water leaks around the manifold area, cracks in the housing due to heat stress, or persistent issues with the water pressure switch failing to trigger the heater. If you notice these symptoms, replacing the manifold is often the most reliable fix.