Sloan OEM parts kit. Replacement back-check internals. For flushometers with 3/4" screwdriver control stops. Includes the NK collar & sleeve, control stop plug, and spring.
Compatible with Royal, Regal, Crown, Gem-2, Naval, Optima Royal, and Optima Regal flushometers with 3/4" control stops.
If your flushometer is not releasing enough water, the screwdriver control stop may need to be adjusted or replaced.
