Zurn 1-NR3XLHRSCDU Water Pressure Reducing Valve, Lead-Free Bronze, FNPT

The Zurn Wilkins 1-NR3XLHRSCDU is a 1" pressure reducing valve with double union FNPT connections. It reduces inlet pressure of up to 400 psi to an adjustable 15-125 psi downstream, factory set at 50 psi. It features a lead-free bronze body. Rated to 400 psi and up to 140°F.

Common Questions

What pressure is it set to out of the box?

1-NR3XLHRSCDU ships factory set at 50 psi. The adjustable reduced-pressure range is 15 to 125 psi, so you can dial the outlet anywhere in that band on site with the adjusting bolt - loosen the locknut, turn to raise or lower pressure, retighten and verify with a downstream gauge.

Does it include a strainer?

Yes - 1-NR3XLHRSCDU has an integral strainer built into the body, so a separate inline strainer ahead of it is not required. It is accessible for cleaning without removing the valve from the line.

Does it have a built-in bypass for thermal expansion, or do I still need an expansion tank?

1-NR3XLHRSCDU includes an integral thermal-expansion bypass that relieves excess downstream pressure back toward the supply when street pressure is lower. It is not a substitute for a properly sized expansion tank where your local code requires one - the bypass only relieves back to the street when street pressure is lower than the closed-system pressure.

Can this be installed in a pit or vault?

Yes - 1-NR3XLHRSCDU ships with the sealed bell housing and stainless steel adjustment screw needed for below-grade, pit, vault or indoor-enclosed installation. Zurn's own installation note requires this option whenever the valve is not in open, ventilated space.

Specifications

• Type: Water Pressure Reducing Valve
• Size: 1"
• Inlet Size: 1"
• Outlet Size: 1"
• Connection: FNPT
• Body Material: Lead-Free Bronze
• Max Pressure (psi): 400
• Application: Domestic Water
• MPN: 1-NR3XLHRSCDU
• Temperature: up to 140°F
• Certifications: ASSE-1003, IAPMO, CSA, NSF-61
• Factory Set Pressure (psi): 50
• Adjustable Range - Min (psi): 15
• Adjustable Range - Max (psi): 125
• Thermal Expansion Bypass: Yes
• Integral Strainer: Yes
• Gauge: None
• Union Configuration: Double Union
• Capacity Class: Standard
• Regulated Media: Domestic Water
• Bell Housing: Sealed Cage