Marketing InformationTaco lead-free shut-off flange combines a full-port shut-off ball valve and companion flange to isolate system circulators for easy removal and service, without draining the system. Simplify your next circulator installation while saving material and labor costs. Solid brass uni-body construction, available in /2 - 1-1/2 in NPT or sweat connections. The swivel-flange provides easier installation and positioning of the pump and lever handle in the most convenient location.