Zodiac - Pressure gauge adapter assembly - R0557101

Zodiac – Pressure gauge adapter assembly – R0557101

The Zodiac R0557101 is an original replacement pressure gauge adapter assembly designed for use with Zodiac pool filtration systems. This component forms part of the filter head assembly, providing the threaded connection point through which a pressure gauge is mounted and secured to the filter tank. Its primary role is to ensure a reliable, sealed interface between the pressure gauge and the filter body, allowing accurate monitoring of the operating pressure inside the filter tank during normal pool circulation.

Maintaining accurate pressure readings is essential for safe and efficient filter operation. A worn or damaged adapter can result in air or water leaks at the gauge connection, inaccurate readings, or pressure gauge failure. Replacing this assembly with the genuine Zodiac part restores the integrity of the pressure monitoring circuit and ensures continued safe operation of the filtration system.

Technical construction and compatibility

The R0557101 is an OEM Zodiac spare part manufactured to the exact tolerances and thread specifications required by compatible Zodiac filter models. The adapter assembly is engineered to provide a secure, leak-free threaded seat for the pressure gauge, withstanding the operating pressures typical of residential pool sand and media filters. As referenced in official Zodiac catalogues spanning multiple years (2018, 2020, and 2024), this part number is listed consistently as a filter head component, confirming its long-standing use across the Zodiac filter range. It is typically installed as item 11 in the filter head assembly diagram, working alongside the air relief valve and O-ring set.

Being a genuine Zodiac replacement part, it is produced to original material and dimensional specifications, ensuring direct fit without modification. Installation requires no specialist tools beyond standard hand tools, making it a straightforward field replacement during routine filter maintenance or following component failure.

Suitability and application

This adapter assembly is intended for pool owners and service technicians maintaining Zodiac sand or media filters that incorporate a pressure gauge in the filter head. It is suitable for residential swimming pool installations where the original adapter has become damaged, cracked, corroded, or has developed a leak. If you are unsure of compatibility, reference your filter model number against the official Zodiac parts catalogue or consult the filter exploded view diagram. Using a genuine OEM replacement ensures long-term reliability and maintains the safety performance of the filter system.