1/2" FNPT or Sweat x Union Boiler Fill Valve w/ Backflow Assembly
Honeywell FM911 is a set of 1/2" NPT Backflow preventer (BP900) and 1/2" NPT/Sweat Union Pressure Reducing Valve (FM451), includes union nut and both sweat and NPT tailpiece
Specifications of Honeywell FM911:
1/2" FNPT or Sweat x Union Boiler Fill Valve w/ Backflow Assembly has an average 5 rating out of based on 1 user review.
Must have this one on hydronic heating systems
3 min installation time! all you need for hydronic heating system! Back flow, pressure regulator (adjustable) all in one box. Thank you PexUniverse!