BD911T Watts 1/2" IPS Union Brass Combination Dial Set Fill Valve & Backflow Preventer 100 PSI
WATBD911T12
MFG #: 0386469
- End Connection: Female Threaded X Female Threaded
- Manufacturer Name: Watts
- Valve Size: 1/2"
- Specifications
- Documents
- Description
- Horizontal or vertical installation
- Pre-assembled unit
- High capacity
- All bronze, union NPT x NPT end connections
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 model 9D backflow preventer and a bronze feed model BD1156F 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. It has 1/2 inch union NPT inlet x NPT threaded outlet connections. The maximum pressure is 100 psi (6.9 bar).