Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer.
Engineering Specification:
The Water Pressure Reducing Valve shall be certified to NSF/ANSI 372 and ASSE® Listed 1003, available with single union, double union and less union end connections. The main body shall be low lead cast bronze (ASTM B 584) alloy. The bell shall be composite plastic. The cartridge shall be NSF® Listed acetal and incorporate an integral seat. The seat disc elastomer shall be NSF® Listed EPDM. The assembly shall be accessible for maintenance without removing the device from the line. The Water Pressure Reducing Valve shall be a ZURN WILKINS Model NR3XL.
Notes:
- Image Shown with FNPT Union x FNPT Connection.
Features & Benefits:
| Low-lead alloy body and composite bell | Corrosion resistant acetal cartridge |
| NSF 61, Annex G compliant | Low-lead law compliant |
Application:
Ideal for use where Lead-Free* valves are required. Designed for installation on potable water lines to reduce high inlet pressure to a lower outlet pressure. The integral strainer makes this device most suitable for residential and commercial water systems that require frequent cleaning of sediment and debris. The direct acting integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion. The balance piston design enables the regulator to react in a smooth and responsive manner to changes in system flow demand, while at the same time, providing protection from inlet pressure changes.
Features:
- Sizes: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"
- Maximum Working Water Pressure (1/2” - 1-1/4”): 400 psi
- Minimum Inlet Pressure = 80 psi as per UPC Code
- Maximum Working Water Pressure (1-1/2” - 2”): 300 psi
- Maximum Working Water Temperature: 140°F
- Reduced Pressure Range (1/2” - 1-1/4”): 15 to 75 psi
- Reduced Pressure Range (1-1/2” - 2”): 25 to 75 psi
- Factory Preset: 50 psi
- Threaded Connections (FNPT): ANSI B1.20.1
- Copper Connections (FC): ANSI B16.22
- CPVC tailpiece: Max.hot water temp. 140°F @ 100 psi
- Cold Water Rated Temp: 73.4°F @ 400 psi
Standards Compliance:
- ASSE® Listed 1003
- IAPMO® Listed
- CSA® Certified
- NSF® Listed - Standard 61 & 372* • Certified to NSF/ANSI 372* by IAPMO R&T *(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Materials:
- Main Valve Body: Low Lead Cast bronze ASTM B 584
- Bell Housing: UV resistant polymer composite
- Internals: Stainless steel, 300 Series
- Stem: Low Lead Brass
- Elastomers: EPDM (FDA approved) Buna nitrile (FDA approved)
- Cartridge: Delrin™ (NSF Listed)
- Springs: 302 Stainless Steel
- Strainer: screen 300 Series Stainless Steel
Typical Installation:
Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted in accordance with the latest edition of the Uniform Plumbing Code. The Model NR3XL may be installed in any position. If installed in a pit, vault, or inside application, specify the “SC” sealed cage option. The assembly shall be installed with sufficient side clearance for testing and maintenance. Multiple installations are recommended for wide demand variations or where the desired pressure reduction is more than 4 to 1 (ie: 200 psi inlet reduced to 50 psi outlet). CAUTION: Anytime a reducing valve is adjusted, a pressure gauge must be used downstream to verify correct pressure setting. Do not bottom adjustment bolt on bell housing.
Technical Documentation:
Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer Specification Submittal: Click Here.
Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer Installation and Maintenance Instructions: Click Here.
Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer BIM/3D Models and 2D DXF Drawings: Click Here.
Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer Repair Parts: Click Here.
Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer Flyer: Click Here.
Media:
Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer Repair Video:
Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer, Regulator Failure or Thermal Expansion Video:
Cross Reference:
Zurn Wilkins 12-NR3XL 1/2" Water Pressure Reducing Valve, Integral By-Pass Check Valve and Strainer Crosses:
- Watts N35BU, N45BU, N55BU
- Conbraco 36C-U
- Cash-Acme EB-86U, EV-87U, EB-45U
- Honeywell-Braukmann D05A, D06G
- Febco PRV-1, PRV-2
- Beeco PRV-C
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