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Specifications
Description
The Zurn Wilkins 1-375XLB is a 1" lead-free reduced pressure zone (RPZ) backflow preventer with Flanged connections. This model is certified lead-free for potable-water installations.
The Wilkins 375XLB Reduced Pressure Principle Backflow Preventer provides high hazard protection for potable water applications. The EZSwap™ Pressure Vessel is removed and replaced with the Flush Fitting Tool for faster flushing and testing.
Features
- 375XLB (1/2" - 2")
- EZSwap® Pressure Vessel is removable for easy access and added convenience
- Flush Tool (FLUSH) provides easy line flushing, saving up to 15 minutes per installation
- Durable UV resistant reinforced nylon EZSwap Pressure Vessel resists corrosion and mineral build-up to better withstand harsh conditions
- Black fusion epoxy-coating disguises bronze for theft prevention
- Low-lead law compliant
- ASSE® Listed 1013
- IAPMO® Listed
- CSA® Certified B64.4
Common Questions
- Is this model legal for potable water?
- Yes. It is certified lead-free to NSF/ANSI 372, which is what state plumbing codes require for any device in a drinking-water line.
- 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.
- What shutoff valves are included?
- It is supplied with non-rising stem (NRS) resilient-seated gate valves on the inlet and outlet.
- 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: Flanged
- Application: Domestic Water
- Backflow Protection: Both
- MPN: 1-375XLB
- Certifications: ASSE-1013, CSA-B64.4, NSF-372, IAPMO
- Lead-Free: Yes
- Assembly Type: RPZ
- ASSE Standard: ASSE 1013
- USC FCCCHR Approved: No
- Field Testable: Yes
- Number of Test Cocks: 4
- Shutoff Valves: NRS Gate
Dimensions
| Size Nominal | 1" | End Connection | Flanged |
Details
| Series | 1-375XLB | Device Type | Reduced Pressure Principle Backflow Preventer |
| Lead Free | Yes | Application | Domestic Water |
| Backflow Protection | Both | Assembly Type | RPZ |
| ASSE Standard | ASSE 1013 | Testable | Yes |
| Test Cocks | 4 | Shutoff Valve Type | NRS Gate |
Certifications & Standards
| ASSE-1013 | CSA-B64.4 |
| NSF-372 | 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
|
| ASSE Standard | ASSE 1013
| ASSE 1013
| ASSE 1013
| ASSE 1013
| ASSE 1013
| ASSE 1013
|
| USC Approved | — | 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 | NRS Gate
| Quarter-Turn Ball
| — | Quarter-Turn Ball
| NRS Gate
| NRS Gate
|
| Series | 1-375XLB
| 112-975XL2
| 975XLU
| 1-975XL2SAG
| 2-375XLFT
| 1-375XLFT
|
| Spec Sheet | ||||||
| Install Sheet | ||||||
| Device Type | Reduced Pressure Principle Backflow Preventer
| Backflow Preventer - Bronze Reduced Pressure Principle Assembly
| Reduced Pressure Principle Backflow Preventer
| Backflow Preventer - Bronze Reduced Pressure Principle Assembly
| Backflow Preventer - Reduced Pressure Principle
| Backflow Preventer - Reduced Pressure Principle
|
| Size Nominal | 1"
| 1-1/2"
| 1"
| 1-1/2"
| 2"
| 3/4"
|
| Lead Free | Yes | Yes | — | Yes | Yes | Yes |
| End Connection | Flanged
| FNPT
| FNPT
| FNPT
| Flanged
| Flanged
|
| Body Material | — | Bronze
| Bronze
| Bronze
| — | — |
| Application | Domestic Water
| Domestic Water
| Irrigation
| Domestic Water
| Domestic Water
| Domestic Water
|
| Max Pressure 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 |
| Certifications | ASSE-1013, CSA-B64.4, NSF-372, IAPMO
| ASSE-1013, AWWA-C511, CSA-B64.4, C-UL, UL, USC, NSF-61, NSF-372, IAPMO
| 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, USC, NSF-61, NSF-372, IAPMO
| ASSE-1013, AWWA-C511, CSA-B64.4, USC, NSF-61, NSF-372, IAPMO
|
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