Zurn 1-NR3XLDUBT Lead-Free Water Pressure Reducing Valve with Integral Strainer with Composite Bell Housing

The Zurn Wilkins 1-NR3XLDUBT is a 1" lead-free pressure reducing valve with double union FNPT connections. It reduces inlet pressure of up to 400 psi to an adjustable 15-75 psi downstream, factory set at 50 psi. It features a lead-free bronze body. Rated to 400 psi and up to 140°F. This model is certified lead-free for potable-water installations.

Our time-tested Pressure Reducing Valves are ideal for residential applications that require frequent cleaning of sediment and debris prevent buildup to protect commercial and residential plumbing systems. The NR3XL PRV’s stainless steel strainer screen catches sediment and debris without buildup to protect your plumbing system, while the cartridge design ensures easy repairs. This PRV features a corrosion-resistant, threaded bell construction for rapid access to internals to speed up maintenance. Building owners experience lower costs and fewer repairs over the products lifespan. Whether its landscaping, residential single family, multifamily or public entrances, upgrade to our proven water pressure regulator.

Features

• Protects plumbing from excessive water pressures
• Inexpensive, durable and versatile — an excellent value for residential construction
• Compact dimensions with a short lay length to fit in tight spaces
• Chemical-resistant cartridge and a durable, threaded, UV-resistant bell housing
• Easily swap out the repair cartridge to increase the lifespan of your valve
• Reduces water consumption by roughly 25% when adjusting pressure from 100 psi to 50 psi, saving on water and sewer bills
• Meets the requirements of NSF/ANSI/CAN 61; is ASSE Listed 1003, cUPC listed, CSA certified B356, and Safe Drinking Water Act Compliant

Common Questions

What pressure is it set to out of the box?

1-NR3XLDUBT ships factory set at 50 psi. The adjustable reduced-pressure range is 15 to 75 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-NR3XLDUBT 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-NR3XLDUBT 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.

Specifications

• Type: Water Pressure Reducing Valve with Integral Strainer with Composite Bell Housing
• Size: 1"
• Inlet Size: 1"
• Outlet Size: 1"
• Connection: FNPT
• Body Material: Lead-Free Bronze
• Max Pressure (psi): 400
• Application: Domestic Water
• MPN: 1-NR3XLDUBT
• Temperature: up to 140°F
• Certifications: ASSE-1003, IAPMO, CSA, NSF-61
• Lead-Free: Yes
• Factory Set Pressure (psi): 50
• Adjustable Range - Min (psi): 15
• Adjustable Range - Max (psi): 75
• Thermal Expansion Bypass: Yes
• Integral Strainer: Yes
• Gauge: None
• Union Configuration: Double Union
• Capacity Class: Standard
• Regulated Media: Domestic Water
• Bell Housing: Standard