Pentair Purex Triton Drain Cap, Threaded 1.5in, TR100/TR140, 154871
No.18, 154871 Threaded Cap, 1.5in PVC. Used on Pac Fab (Pentair) Purex-Triton II sand filter drains. Fits Models TR100/TR140 and TR100C/TR140C sand pool filters, with 30in and 36in tank diameters and 1.5in drain pipes. 15-4871 and other Pentair Triton TR100 / TR140 parts are in our parts department.