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Specifications
Description
The Zurn Wilkins 1-975XLU is a 1" reduced pressure zone (RPZ) backflow preventer with FNPT connections, approved for high health hazard protection. It features a bronze body. Rated to 175 psi and up to 180°F.
The 975XLU Reduced Pressure Principle Backflow Assembly, with union ball valves, is used in high health hazard, potable water applications for protection against both backsiphonage and backpressure of contaminated water into the non-potable water supply. The wye pattern, bronze body is assembled with union ball valve shutoffs for easy body removal from the line, ideal for irrigation applications which require the removal of the valve during winter months. The 975XLU is the simplest, best, and most reliable backflow preventer in the irrigation market today.
Features
- Union ball valves between the body and shut-off valves allow for easy removal of the body from the line
- Ideal for high hazard, irrigation applications requiring valve removal during winter months
- All cast bronze body and stainless steel internals provide corrosion-resistance
- IAPMO® Listed
- CSA® Certified
- AWWA Compliant
- AWWA Compliant C511
Common Questions
- What hazard level is this RPZ approved for?
- It is rated for high health hazard (toxic) cross-connections, so it may be used on either high or low hazard service. The assembly is listed to ASSE 1013.
- Does this assembly have to be tested every year?
- Yes. This is a field-testable assembly with 4 test cocks. Most water authorities require it to be tested and certified by a licensed backflow tester at installation and annually thereafter. It carries USC FCCCHR approval, which many jurisdictions accept as their sole approval list.
- Does the relief valve need a drain?
- Yes. An RPZ relief valve is designed to discharge, and it can dump a large volume of water, so it must never be installed in a pit or below grade and the discharge must be piped to an adequate drain through an air gap. The air gap fitting is not included with this model and is ordered separately.
Specifications
- Type: Reduced Pressure Principle Backflow Preventer
- Size: 1"
- Connection: FNPT
- Body Material: Bronze
- Max Pressure (psi): 175
- Application: Irrigation
- Backflow Protection: Both
- MPN: 1-975XLU
- Temperature: up to 180°F
- Certifications: ASSE-1013, AWWA-C511, CSA, USC, IAPMO
- Assembly Type: RPZ
- Hazard Protection Level: High Health Hazard
- ASSE Standard: ASSE 1013
- USC FCCCHR Approved: Yes
- Field Testable: Yes
- Number of Test Cocks: 4
Dimensions
| Size Nominal | 1" | End Connection | FNPT |
Details
| Series | 975XLU | Device Type | Reduced Pressure Principle Backflow Preventer |
| Body Material | Bronze | Application | Irrigation |
| Max Pressure PSI | 175.0 psi | Max Temp °F | 180.0 °F |
| Backflow Protection | Both | Assembly Type | RPZ |
| Hazard Rating | High Health Hazard | ASSE Standard | ASSE 1013 |
| USC Approved | Yes | Testable | Yes |
| Test Cocks | 4 | — | — |
Certifications & Standards
| ASSE-1013 | AWWA-C511 |
| CSA | USC |
| IAPMO | — |
Compare with similar products
| Backflow Protection | Both
| Both
| Both
| Both
| Both
| Both
|
| Assembly Type | RPZ
| RPZ
| RPZ
| RPZ
| RPZ
| RPZ
|
| Hazard Rating | High Health Hazard
| High Health Hazard
| High Health Hazard
| High Health Hazard
| High Health Hazard
| High Health Hazard
|
| ASSE Standard | ASSE 1013
| ASSE 1013
| ASSE 1013
| ASSE 1013
| ASSE 1013
| ASSE 1013
|
| USC Approved | Yes | Yes | Yes | Yes | Yes | Yes |
| Fire Listing | — | UL Classified, C-UL Classified
| UL Classified, C-UL Classified
| — | — | — |
| Testable | Yes | Yes | Yes | Yes | Yes | Yes |
| Test Cocks | 4
| 4
| 4
| 4
| 4
| 4
|
| Shutoff Valve Type | — | Quarter-Turn Ball
| Quarter-Turn Ball
| NRS Gate
| NRS Gate
| NRS Gate
|
| Series | 975XLU
| 112-975XL2
| 1-975XL2SAG
| 2-375XLFT
| 1-375XLFT
| 1-375XLFT
|
| Spec Sheet | ||||||
| Install Sheet | ||||||
| Device Type | Reduced Pressure Principle Backflow Preventer
| Backflow Preventer - Bronze Reduced Pressure Principle Assembly
| Backflow Preventer - Bronze Reduced Pressure Principle Assembly
| Backflow Preventer - Reduced Pressure Principle
| Backflow Preventer - Reduced Pressure Principle
| Backflow Preventer - Reduced Pressure Principle
|
| Size Nominal | 1"
| 1-1/2"
| 1-1/2"
| 2"
| 3/4"
| 1"
|
| Lead Free | — | Yes | Yes | Yes | Yes | Yes |
| End Connection | FNPT
| FNPT
| FNPT
| Flanged
| Flanged
| Flanged
|
| Body Material | Bronze
| Bronze
| Bronze
| — | — | — |
| Application | Irrigation
| Domestic Water
| Domestic Water
| Domestic Water
| Domestic Water
| Domestic Water
|
| Max Pressure PSI | 175.0 psi | 175.0 psi | 175.0 psi | 175.0 psi | 175.0 psi | 175.0 psi |
| Max Temp °F | 180.0 °F | 180.0 °F | 180.0 °F | 180.0 °F | 180.0 °F | 180.0 °F |
| Certifications | ASSE-1013, AWWA-C511, CSA, USC, IAPMO
| ASSE-1013, AWWA-C511, CSA-B64.4, C-UL, UL, USC, NSF-61, NSF-372, IAPMO
| ASSE-1013, AWWA-C511, CSA-B64.4, C-UL, UL, USC, NSF-61, NSF-372, IAPMO
| ASSE-1013, AWWA-C511, CSA-B64.4, USC, NSF-61, NSF-372, IAPMO
| ASSE-1013, AWWA-C511, CSA-B64.4, USC, NSF-61, NSF-372, IAPMO
| ASSE-1013, AWWA-C511, CSA-B64.4, USC, NSF-61, NSF-372, IAPMO
|
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