Skip to content
FREE SHIPPING ON ALL ORDERS
FREE SHIPPING ON ALL ORDERS

Watts B911S-M3 - Part of the 911 Series

$463.05


FREE SHIPPING
SKU 0386462

This 1/2 inch bronze combination fill valve and backflow preventer is for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow when supply pressure falls below system pressure. It consists of a bronze backflow preventer, model 9D and a bronze feed water pressure regulator, model 1156F, in one pre-assembled unit. The high capacity fill valve provides quick system filling and purging. It is designed for use in the boiler feed lines of hydronic heating systems and has 1/2 inch union solder inlet x NPT threaded outlet connections. The maximum pressure is 100 psi (6.9 bar).

Features
  • For use in commercial and residential hydronic heating systems
  • Pre-assembled unit
  • All bronze body construction with solder connection
  • 1/2 Inch union solder inlet x NPT threaded outlet connections
  • High capacity fill
  • Maximum pressure 100 psi
Specifications
Backflow Preventer Type Dual Check with Atmospheric Vent
Body Finish Bronze
Body Material Bronze
Body Pattern Inline
Brand Watts
Buy American Act Compliant YES
Bypass No
Bypass Size Does Not Apply To Product
Cap And Tether No
Disc Material EPDM
EAN 098268918526
Elbow Fitting No
Environmental Product Declaration Yes
GDS Status Registered
Hazard Protection Level Non Health Hazard
Hot And Harsh Water No
Hydrant Connection No
Inlet Connection Size 1/2 IN
Inlet Connection Size-Metric 15 MM
Inlet Connection Type Union Solder
Inlet Shutoff Valve Type No Shutoff Valve
Inlet Thread Type Does Not Apply To Product
Lead Free NO
Maximum Temperature-Fahrenheit 212
Maximum Working Pressure-BAR 6.90
Maximum Working Pressure-PSI 100
Meter Type No Meter
Outlet Connection Size 1/2 IN
Outlet Connection Type Female Threaded
Outlet Shutoff Valve Type No Shutoff Valve
Outlet Thread Type NPT
Part Number 0386462
Polymer Coating No
Pressure Operation Continuous
Protection Type Backpressure and Backsiphonage
Seat Material Plastic
Series 911
Strainer No
UPC - 098268918526

Shipping

  • All items ship for free (standard ground, see map)
  • Call: (800) 604-5537 for pricing and shipping questions. Shipping estimates shown on the map pertain to this specific product only.
  • Orders typically ship in 1-3 business days. Transit times displayed in the map are listed in business days, and are approximate. The day that the order is shipped is not counted as a transit day.
NDS-Transit-Map_6d8f0af4-e4db-4159-a7a4-4ca8b8ba8710.gif__PID:713ed80e-353f-4d48-9ae6-2b8b0e0a3d58