Pentair Propane to Natural Gas Conversion Kit Model 400 | MasterTemp | 77707-1411 Light Niches verify your existing grid carries

verify your existing grid carries OEM part number 23900-0033 before purchasing — "Swimquip DE Filter" spans multiple designs and not all are compatible

Replacing a fatigued fitting at the same time as the pressure relief valve avoids a second service call and ensures the new valve seats correctly

DE filters — Hayward ProGrid and other Hayward DE filters use a different grid configuration (8 full grids

Pentair Heater Master Kit - Water — MasterTemp / Max-E-Therm 461102 Included in Water and All master kits

it can be used in pools with salt systems

Pentair Propane to Natural Gas Conversion Kit Model 400 | MasterTemp | 77707-1411 Light Niches verify your existing grid carriesThe Pentair Propane to Natural Gas Conversion Kit (77707 1411) is the OEM replacement conversion kit for the MasterTemp 400LP gas heater, converting the burner system from propane (LP) to natural gas (NG) operation. IMPORTANT: KIT INCLUDES MULTIPLE COMPONENTS This listing is for a complete conversion kit (Key Nos. 3 and 4 per the Pentair exploded diagram). Verify which components are required for your specific repair before ordering to avoid duplicate