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k19 topside needs a 4-button overlay to restore readable control labeling
Improves service confidence and long-term usability
and PVT25W/PAD
more dependable operation
helping protect internal parts and simplify routine upkeep
Hayward Star-Clear C1750 Lock Nut (CX1750G) pentairrainbow k19 topside needs a 4-buttonThe lock nut helps secure components on compatible Hayward Star Clear C1750 filter assemblies, making it important for proper fit and serviceability. If the original nut is stripped, cracked, or missing, this replacement helps restore the intended connection without replacing larger filter components. Small hardware failures can slow down a cartridge cleaning or prevent the filter from being assembled correctly. Keeping the right lock nut available
