The Hayward Pressure Gauge with Dial (ECX2712B1) is the OEM replacement pressure gauge for Hayward SwimClear Multi-Element Cartridge Filters, ProGrid DE Filters, and Perflex Extended-Cycle DE Filters. Monitoring filter pressure is the primary way to determine when cleaning or backwashing is required, and this gauge keeps that reading accurate and clearly visible. Specifications Hayward Part Number ECX2712B1 UPC 610377809702 Fits Into Brand Equipment Line Model / Part Number Hayward SwimClear Multi-Element Cartridge Filter 325 Sq.Ft. W3C3030 Hayward SwimClear Multi-Element Cartridge Filter 425 Sq.Ft. W3C4030 Hayward SwimClear Multi-Element Cartridge Filter 525 Sq.Ft. W3C5030 Hayward ProGrid DE Filter 36 Sq.Ft. W3DE3620 Hayward ProGrid DE Filter 48 Sq.Ft. W3DE4820 Hayward ProGrid DE Filter 60 Sq.Ft. W3DE6020 Hayward Perflex Extended-Cycle DE Filter 27 Sq.Ft. W3EC65A Hayward Perflex Extended-Cycle DE Filter 40 Sq.Ft. W3EC75A Compatibility is based on Hayward parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering. Poolaroo Pro Tip A cracked lens, fogged dial face, or needle that no longer returns to zero are reliable signs a gauge needs replacement — don't wait for a complete failure. When servicing your filter, take the opportunity to check that the gauge port and any sealing threads or O-ring seat are clean and free of debris before threading the new gauge in. Hand-tighten only; over-torquing a gauge body into a plastic filter head can crack the housing.
