【Universal Compatibility】Engineered as a direct replacement for part #154856. Compatible with:Triton II TR100 & TR140 (manufactured after 10-01-01))；Triton II Commercial TR100C & TR140；Triton C-3 Commercial sand filters (Before March 1997) 【Leak-Proof Solution】Effectively addresses the issue of pinhole leakage on the top section. Ideal for replacing and repairing your worn-out or damaged buttress thread closure kit. A must have tool for rebuilding your pool system. Enjoy the new pool life. 【Premium Quality】All replacement parts are crafted from high-grade materials, boasts exceptional corrosion resistance and durability. Coated with black finish, built to withstand the rigors of regular use, ensuring long-term reliability and performance. Meeting or exceeding OEM specifications 【Easy Installation】Simply assemble the pressure gauge, O-ring and bleeder valve to the closure lid; then place the closure lid on the filter, install the lid wrench and tighten the lid. The entire installation process only takes a few minutes. It is best to lubricate the O-rings with lubricating oil. 【Comprehensive Accessories】The kit comprises: 1 Air relief valve lid, 1 PSI gauge, 2 O-rings, 1 Air safety valve lock nut, and 1 Lid wrench, providing all the necessary components for a complete repair. Directly replace part for 154856. Compatible with Triton II TR100 & TR140 (after 10-01-01); Triton II Commercial TR100C & TR140C; Triton C-3 Commercial sand filters ( before March 1997 ).