Hayward CAT 20274 Probe Storage Cap – OEM Sensor Cap for pH & ORP Electrodes

Protect your pH and ORP sensors with the Hayward 20274 Probe Storage Cap, the official OEM replacement designed for use with CAT chemical controller systems. Whether you're removing a sensor for off-season storage, transport, or maintenance, this cap is essential for extending probe life and preserving calibration accuracy.

Compatible with standard CAT sensors used in the CAT 2000, CAT 4000, and CAT 6000 controllers, the 20274 cap seals tightly over the probe tip to retain moisture and prevent air exposure. Simply fill with storage solution or pH 4 buffer (as recommended by Hayward) and install it over the probe end.

Whether you’re a pool service tech or aquatic facility manager, this small but critical part helps protect your investment in sensitive sensor equipment.