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Description
Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.

Series 911 combination fill valve and backflow preventer consists of a Model 9D backflow preventer and Model 1156F feed water pressure regulator in one pre-assembled unit. This valve is designed for use on boiler feed lines to provide make-up water to the boiler and prevent backflow when supply pressure fails below system pressure.

Features
- Pre-assembled for ease of installation
- Easy service accessibility
- High capacity fill valve for quick system filling and purging

Specifications
A combination fill valve and backflow preventer shall be installed on the boiler feed line to provide make-up water to the boiler. The valve shall contain a Watts Regulator Model 9D backflow preventer and Model 1156 feed water pressure regulator. The combination fill valve and backflow preventer shall be a Watts Regulator Company Series 911.

Pressure-Temperature
Maximum Temperature: 212 degrees F (100 degrees C)
Maximum Working Pressure: 100 psi (6.9 bars)
Adjustment Range: 10-25 psi (68.7 - 172.4 kPa) set at 15 psi (103.4 kPa)
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Manuals (1)
Specs
Size:
1/2"
Connection Type:
Sweat x NPT
Pressure Range:
10 to 25 psi
Min Pressure (PSI):
10
Max Pressure (PSI):
25
Material:
Bronze
Application:
Heating
Thread Size:
1/2"
Max Inlet Pressure:
100 PSI
Pressure Set Point:
Factory Set at 15 psi
Inlet Type:
Sweat
Outlet Type:
NPT
Temperature Range (F):
212°F Max
Width:
8-1/2"
Height:
5-1/4"
Weight (lbs):
4.2 lbs
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