The Bell & Gossett 101223LF Isolation Flange Set

Bell & Gossett 101223LF Isolation Flange Set is a two‑flange brass isolation kit in 1-1/4" NPTF size that lets you remove a Bell & Gossett pump without draining the entire loop. The PK2 package includes two isolation flanges with capscrews and nuts, designed for use with Bell & Gossett 100‑series circulators and compatible with Grainger 4JA83 and 4JA84 potable pumps. Each flange assembly is rated for up to 150 psi, with brass body construction and 1-1/4" NPTF end connections; the hardware provides two mounting holes and 0.44" bolt holes. Overall length is 5-9/16" and flange width is 4-7/16", making the pair suitable for Bell & Gossett installations listed as compatible with 100, NRF, PL-30, PL-36, PL-55, and PR families.