Watts 957N-QT 4 - Part of the 957 Series
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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 N pattern 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, quarter turn ball valves, test cocks, and a corrosive resistant stainless steel bottom mounted pressure relief valve.
Features- 304 (Schedule 40) stainless steel housing and sleeve
- Quarter turn ball valves
- Approved for horizontal N pattern installation
- 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 | N-Pattern |
| Brand | Watts |
| Buy American Act Compliant | NO |
| Bypass | No |
| Cap And Tether | No |
| EAN | 098268124774 |
| 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 | Female Threaded |
| Inlet Shutoff Valve Type | Quarter Turn Ball 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 | Does Not Apply To Product |
| Outlet Shutoff Valve Type | Quarter Turn Ball Valve |
| Outlet Thread Type | Does Not Apply To Product |
| Part Number | 0111670 |
| Polymer Coating | No |
| Pressure Operation | Continuous |
| Protection Type | Backpressure and Backsiphonage |
| Series | 957 |
| Strainer | No |
| Technologies | Does Not Apply To Product |
| Tradename | None |
