1" NR3 Water Pressure Reducing Valve Zoom

1" NR3 Water Pressure Reducing Valve


Brand: Zurn

1-NR3 has been discontinued.
Direct Replacement:
Brand: Zurn

Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.




Size: 1"
Connection Type: Female Union NPT x Female NPT
Max Temp (F): 180°F
Max Inlet Pressure: 400 PSI

Description for Zurn 1-NR3

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.

Standards Compliance:

  • ASSE® Listed 1003
  • IAPMO® Listed
  • CSA® Certified

  • Main valve body: Cast bronze ASTM B 584, UNS C84400
  • Bell housing: UV resistant polymer composite
  • Internals: Stainless steel, 300 Series
  • Stem: Brass ASTM B 16
  • Elastomers: EPDM (FDA approved), Buna nitrile (FDA approved)
  • Cartridge: Delrin? (NSF Listed)
  • Springs: Oil temp wire, ASTM A 229
  • Strainer screen: 300 Series Stainless Steel

1" NR3 Water Pressure Reducing Valve

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2 Questions | 2 Answers
Displaying questions 1-2
  • 1" NR3 Water Pressure Reducing Valve


    What is the range on this? We need 2.5-75.
    Asked on 7/15/2015 by Janice from United States

    1 answer



      the PSI range is 15-75, I do not see any that will go that low.

      Answered on 7/16/2015 by Supplyhouse Staff from New York
  • 1" NR3 Water Pressure Reducing Valve


    What is the pressure set for by the factory?
    How do you adjust the pressure to a higher one and is this advisable?
    Asked on 6/30/2014 by Chuck

    1 answer



      This Pressure Reducing Valve is factory preset for 50 PSI. There is an adjustment bolt on the unit. 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 verifycorrect pressure setting. Do not bottom the adjustment bolt on bell housing.

      Answered on 7/2/2014 by SupplyHouse Staff from NY
Displaying questions 1-2

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