Description

WATTS®, F111779, Backflow Preventer, Z-Pattern, Series: 957-FS, 4 in Nominal, Grooved End Style, 175 psi Pressure, 33 to 140 deg F, 7.5 fps Flow Rate, Quarter-Turn Ball Valve Ball Valve/Gate Valve, Reduced Pressure Zone Backflow, Media: Water, Stainless Steel Body, 33-3/4 in L Dimensions, Domestic

Features:

• Groove couplings for ease of installation and pipe alignment
• Replaceable check disc rubber
• Compact design allows small enclosures to be used
• Features a flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve
• 304 (Schedule 40) stainless steel housing and sleeve
• The maximum working pressure is 175 psi (12.06 bar)

Standards/Approval:

• N-No UL Code Rating
• ASSE 1013
• CSA B64.4
• cULus Classified
• FM Approved
• NSF/ANSI 691-G
• PROP65: Cancer and Reproductive Harm www.P65Warnings.ca.gov

Backflow Type	Reduced Pressure Zone
Ball Valve/Gate Valve Type	Quarter-Turn Ball Valve
Body Material	Stainless Steel
Dimensions	33-3/4 in L
Domestic/Import	Domestic
End Style	Grooved
Flow Rate	7.5 fps
Media	Water
Nominal Size	4 in
Pressure Rating	175 psi
Series	957-FS
Temperature Rating	33 to 140 deg F
Type	Z-Pattern
Manufacturer	Watts Regulator Company