Watts B911T-M3 1/2" Pressure Reducing Valve, Bronze, NPT

The Watts B911T-M3 is a 1/2" backflow preventer with NPT connections. It features a bronze body and a ptfe seat. Rated to 100 psi and up to 212°F.

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 NPT inlet x NPT threaded outlet connections. The maximum pressure is 100 psi (6.9 bar).

Features

• Bronze body for durability
• Threaded connections
• Strainer screen
• Horizontal or vertical installation
• Includes: Strainer

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: NPT
• Body Material: Bronze
• Seat / Seal Material: PTFE
• Max Pressure (psi): 100
• Pack Quantity: 6
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: B911T-M3
• Temperature: up to 212°F
• Lead-Free: No
• Shutoff Valves: None
• Approved Orientation: Horizontal & Vertical
• Flood Sensor (SentryPlus Alert): No
• Strainer Included: Yes
• Air Gap Fitting Included: No