Description
Product Summary
The Watts B911S is a backflow preventer from Watts, described by the manufacturer as: 1/2" sweat combo back flow preventer & pressure reducing valve 0386462. It is sized for 1/2" connections (sweat). It replaces 911S.
A backflow preventer stops boiler or system water from flowing back into the drinking water supply. Replace a backflow preventer that leaks or fails its test.
Before you order, match B911S to the part number on the part you are replacing or in your equipment's repair parts list, and confirm the voltage, size and connections match your equipment. If you are not sure which part your equipment needs, call us at 1.888.509.3391 with the model and serial number and we will confirm it for you.
Key Features
- Genuine Watts part: Manufacturer part number B911S, factory new.
- Pipe Size: 1/2".
- Cross-reference: Replaces 911S.
- Part type: Backflow Preventer.
Frequently Asked Questions
Is this a genuine Watts part?
Yes. This is the Watts B911S, a factory-new backflow preventer from Watts.
How do I make sure it fits my equipment?
Compare B911S with the part number printed on the part you are replacing or listed in your equipment's repair parts list, and confirm the voltage and connections match. If you are not sure, call us at 1.888.509.3391 with your model and serial number and we will confirm it.
What part numbers does the B911S replace?
The Watts B911S replaces 911S.
Should a professional install this part?
Yes. Gas, electrical, hydronic and combustion components should be installed by a qualified technician who can test the system afterward and follow the codes that apply where you live.
