1/2" FNPT or Sweat x Union Boiler Fill Valve w/ Backflow Assembly


Brand: Honeywell

Mfr Part#: FM911

Availability: In Stock
Usually ships: within 1 business day
Qty Price
$70.95 / each
  • Description
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  • Reviews (1)
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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



  • Fast fill feature;
  • Built in check valve;

Specifications of Honeywell FM911:

  • FAST Fill yes;
  • Pipe Size 1/2";
  • Connection Type: NPT;
  • Inlet Connection Size 1/2";
  • Inlet Connection Type: Sweat or Threaded;
  • Regulating Pressure Range (psi) 4 psi to 60 psi;
  • Maximum Safe Operating Pressure (psi) 150 psi;
  • Maximum Safe Operating Pressure (kPa) 1034 kPa;
  • Maximum Ambient Temperature (F) 212 F;
  • Materials (Body) Brass;
  • Weight (lb) 4 lb;
1/2" FNPT or Sweat x Union Boiler Fill Valve w/ Backflow Assembly has an average 5.0 out of 5 rating based on 1 user review.
Must have this one on hydronic heating systems
By Momchil, Lic Plumber (from Sacramento,CA) on 8/16/2016
3 min installation time! all you need for hydronic heating system! Back flow, pressure regulator (adjustable) all in one box. Thank you PexUniverse!
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