Watts 957-OSY-FXG 8 - Part of the 957 Series

This 8 inch reduced pressure zone assembly backflow preventer helps prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. This extremely compact and lighter than a traditional designed assembly is approved for horizontal installation as long as the backflow assembly is installed in accordance with the direction of the flow arrow. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and from other contaminants found at the service line entrance. This assembly consists of a stainless steel body with a quick access sleeve, torsion spring check valves, flanged inlet gate connection and grooved outlet gate connection, test cocks, and a corrosive resistant stainless steel bottom mounted pressure relief valve.

Features

• 304 (Schedule 40) stainless steel housing and sleeve
• UL and FM outside stem and yoke resilient seated gate valves
• Health hazard application
• Replaceable check disc rubber
• Bottom mounted cast stainless steel relief valve
• Compact design allows small enclosures to be used
• Patented torsion spring check modules for ease of serviceability
• Groove couplings for ease of installation and pipe alignment
• The maximum working pressure is 175 psi (12.06 bar)

Specifications
ArmorTek Technology	No
Backflow Preventer Type	Reduced Pressure Zone Assembly
Body Finish	Stainless Steel
Body Material	Stainless Steel
Body Pattern	Inline
Brand	Watts
Buy American Act Compliant	NO
Bypass	No
Cap And Tether	No
EAN	098268444483
Elbow Fitting	No
Hazard Protection Level	Health Hazard
Hot And Harsh Water	No
Hydrant Connection	No
Inlet Connection Size	8 IN
Inlet Connection Size-Metric	200 MM
Inlet Connection Type	Flanged Joint
Inlet Shutoff Valve Type	Outside Stem And Yoke Gate Valve
Inlet Thread Type	Does Not Apply To Product
Lead Free	Yes
Maximum Temperature-Fahrenheit	140
Maximum Working Pressure-BAR	12.10
Maximum Working Pressure-PSI	175
Meter Type	No Meter
Minimum Temperature - Celsius	0.50
Minimum Temperature-Fahrenheit	33
Outlet Connection Size	8 IN
Outlet Connection Type	Grooved Joint
Outlet Shutoff Valve Type	Outside Stem And Yoke Gate Valve
Outlet Thread Type	Does Not Apply To Product
Part Number	0191641
Polymer Coating	No
Pressure Operation	Continuous
Protection Type	Backpressure and Backsiphonage
Seat Material	Engineered Plastic
Series	957
Strainer	No
Technologies	Does Not Apply To Product
Tradename	None

• Specification Sheet - 957
• Specification Sheet - 957 (French)
• Specification Sheet - 957 (Spanish)
• Specification Sheet - Flood Sensor Connection Kit - Watts
• Specification Sheet - Flood Sensor Connection Kit - Watts (French)
• Specification Sheet - Flood Sensor Connection Kit - Watts (Spanish)

UPC - 098268444483