Watts 1/2 BD911ST-UT Pressure Reducing Valve, Sweat

The Watts 1/2 BD911ST-UT is a 1/2" backflow preventer with Sweat connections. It is rated to 100 psi and up to 212°F.

This 1/2 inch bronze combination dial set 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 model 9D backflow preventer and a bronze model BD1156F feed water pressure regulator 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. This valve includes both 1/2 inch union solder and 1/2 inch union female NPT inlet connection tailpieces, and a 1/2 NPT union threaded outlet connection. The maximum pressure is 100 psi (6.9 bar).

Features

• Pre-assembled unit
• High capacity
• All bronze, union solder or NPT inlet (connection tailpieces included) x NPT outlet connections
• Horizontal or vertical installation

Common Questions

Can this be installed on potable water?

No. This model is not certified lead-free, so it may not be installed in potable water systems in states enforcing the NSF/ANSI 372 weighted-average lead rule. Use it on non-potable service — fire lines, irrigation or industrial water — or order the LF (lead-free) version of this model for drinking-water use.

How does this have to be installed?

It is approved for either horizontal or vertical installation, with the flow arrow on the body pointing in the direction of flow.

Specifications

• Type: Pressure Regulator
• Size: 1/2"
• Inlet Size: 1/2"
• Outlet Size: 1/2"
• Connection: Sweat
• Max Pressure (psi): 100
• Pack Quantity: 12
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: 1/2 BD911ST-UT
• Temperature: up to 212°F
• Lead-Free: No
• Shutoff Valves: None
• Approved Orientation: Horizontal & Vertical
• Flood Sensor (SentryPlus Alert): No
• Strainer Included: No
• Air Gap Fitting Included: No