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+1 (217) 579-8045BELL & GOSSETT 3/4" NPT LEAD FREE ISOLATION FLANGES.Safe Drinking Water Act Compliant (Lead Free / Low Lead)This isolation flange is a combination of an isolation ball valveand a companion flange for circulators. It allows easy service or replacement of the circulator without the need to drain the system.The product fits the Bell& Gossett NRF/NBF/SSF wet rotors, Series PL-30, PL-36, PL-55, Series 100, PR and LR circulators.Replaces 101221