1 In. Pump Isolation Flange (Pair) - Npt

Combination of an isolation ball valve and a companion flange for circulators. allows for easy service or replacement of the circulator without the need to drain the system. for use with pump models: 100nfi, lr, nrf, pr, pl-30, pl-36, pl-55, 100bnfi, lr, nbf, prab, pl-30b, pl-36b, pl-55b, lr20wr, lr15bwr, nbf-12f/lw, nbf-22,nbf-33, nbf36, nrf-22, nrf-9f/lw, nrf-33, nrf-36, ssf-12f/lw, ssf-22.