The Hayward back-mount adjustable pressure gauge is designed for compatible filter and circulation applications where system pressure needs to be monitored. A pressure gauge is useful because it helps display pressure readings, supporting easier maintenance, cleaning schedules, and troubleshooting decisions.This replacement is especially useful when the original gauge is leaking, cracked, fogged, inaccurate, or no longer readable. Matching the correct 1/4 inch male pipe thread back-mount configuration helps preserve intended fit and dependable monitoring.The ECX2712B1 is a practical service part when a compatible Hayward system needs a gauge to restore dependable pressure visibility. Hayward back-mount adjustable pressure gauge 1/4 inch MPT connection 0 to 60 psi range Useful when the original gauge is inaccurate or unreadable Supports cleaner and more dependable filter-system monitoring