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Pentair Air Release Valve Kit - 154687
Complete fitting package replacement. Fits Pentair System 3 SM, SD and SMD series pool and spa filter models S7M120, S7M400, S8M150, S8M500, S7D75, S8D110
Also fits Pentair Triton II pool and spa sand filter models TR140, TR50, TR60, TR100. Measures 3-1/2-inch length by 1-1/4-inch height by 1-1/4-inch width