957-OSY-FXG 4
Part of the 957 Series
Ordering Code: 0191639
UPC: 098268444469
Lead Free: YES
4 IN SS Reduced Pressure Zone Assembly Backflow Preventer, OSY Shutoff Valves, Flanged Inlet x Grooved Outlet
This 4 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
- Flanged inlet gate connection and grooved outlet gate connection
- 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 | 098268444469 |
| Elbow Fitting | No |
| Hazard Protection Level | Health Hazard |
| Hot And Harsh Water | No |
| Hydrant Connection | No |
| Inlet Connection Size | 4 IN |
| Inlet Connection Size-Metric | 100 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 | 4 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 | 0191639 |
| 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 |