Genuine Sloan OEM part. 1.28 gpf piston kit for Sloan GEM-2 water closet (toilet) flushometers. Includes piston cover, molded cup, spring, relief valve, relief valve seat, piston body, filter o-ring, and main seat.
NOTE: Sloan seems to have updated (or provides different) piston colorways over time. The images above are actual photographs of an OEM Sloan 3307135 (G1022A) received to stock in April, 2025. The chart below is provided in case the piston you have may fit one of the colorways below to help you decide if this is the right part for your flushometer.
- 1.28 gpf (4.8 Lpf) – Water Closet
- Purple cover with 1.2 GPF & 4.5 LPF imprinted.
- Green Barrel (Note that we have seen cream (or tan) and black pistons from earlier GEM 2 flushometers).
- Slotted Piston
