Watts Backflow Preventer Valve, 911S12

Watts Backflow Preventer Valve, 911S12

Code: BLR-911S12



Product Description

Manufacturer: Watts

Backflow Preventer Valve

• Package includes 2-way combination control, circulator, motorized vent damper, integral draft diverter
• Used on boiler supply feed lines to provide make-up water to the boiler and prevent backflow when supply pressure falls below system pressure.
• An assembly of Watts 9D backflow preventer and 1156F feed water pressure regulator.
• Connection: solder union x FPT
• Maximum pressure: 100 psi
• Maximum temperature: 212°F
• Boiler fill valve set at 15 psi
• Adjustable range: 10–25 psi


Connection Size (in): 1/2
Connection Type: solder union x FPT

Replaces Part Number: 911S12