This bleeder is designed to use with Pentair Nautilus and Nautilus Plus
pool/spa D.E. filter models NS24, NS36, NS48, NS60, NS72, NSP-24,
NSP-36, NSP-48, NSP-60, NSP-72 and also compatible with Pentair FNS pool
and spa D.E. filter models FNS 24, FNS 36, FNS 48, FNS 60. Also fits
Pentair Triton C, C-3, TR100C, TR140C pool/spa sand filters and Six-Way
1-1/2-inch HiFlow pool and spa multiport valves. Includes o-ring.