Hayward Pressure Gauge for ProSeries Sand Filters and Perflex DE Filters | ECX270861 C6616 This transformer is a mains-voltage

This transformer is a mains-voltage component inside the load center enclosure

The impeller ring seats around the pump impeller to control clearance between the impeller and the pump housing

allowing you to convert the unit from natural gas to propane fuel operation

Pentair supplies this assembly in multiple color variants corresponding to different filter configurations — ordering the wrong color variant may result in a part that does not seat correctly in your filter's air relief port

locate the part number stamped or molded on your existing seal and confirm it matches U109-93SS — this seal fits pre-1998 copper insert pumps only and is not interchangeable with later Sta-Rite shaft seal designs

Hayward Pressure Gauge for ProSeries Sand Filters and Perflex DE Filters | ECX270861 C6616 This transformer is a mains-voltageThe Hayward Pressure Gauge (ECX270861) is the OEM replacement filter pressure gauge for Hayward ProSeries Sand Filters and Perflex Extended Cycle DE Filters. This gauge threads into the filter tank's air relief gauge port and provides a direct visual readout of operating pressure inside the filter. Monitoring this reading is how you determine when the filter tank needs backwashing (sand filters) or element cleaning (DE filters). Specifications Hayward