Pentair 154689 Air Bleeder Assembly;

This air bleeder tee assembly is designed to use with Pentair Triton II pool and spa sand filter models TR140, TR50, TR60, TR100 and also compatible with Pentair System 3 SS series pool and spa sand filter models S7S50, S8S70. Measures 3-inch length by 1-1/2-inch height by 1-3/4-inch width.