Zurn z-1-nr3xldu 1 in Prv Double Union Fnpt

Product Description

The ZURN z-1-nr3xldu is a 1-inch pressure reducing valve (PRV) with double union ends and female NPT (FNPT) connections. PRVs reduce high inlet water pressure to a lower, controlled outlet pressure to protect downstream plumbing fixtures, appliances, and piping from damage. The double union configuration allows the valve body to be removed from the line without disturbing adjacent piping, which simplifies servicing and replacement. Licensed plumbers and mechanical contractors install this type of valve in residential and light commercial water distribution systems.

This PRV is suited for potable water supply systems where inlet pressure must be stepped down to a safe working range before reaching fixtures, water heaters, boilers, and other pressure-sensitive equipment. The 1-inch FNPT end connections make it compatible with standard threaded pipe installations. The double union design is particularly valued in retrofit and service applications where future maintenance access is a priority.

Key Features

• 1-inch female NPT (FNPT) inlet and outlet connections for standard threaded pipe installations
• Double union end configuration for in-line removal and reinstallation without disturbing adjacent piping
• Pressure reducing valve design protects downstream fixtures and appliances from high supply pressure
• Compact valve body suited for residential and light commercial plumbing applications

Compatibility

Designed as an OEM-style replacement or new-installation PRV for 1-inch threaded water supply piping systems requiring pressure reduction with double union serviceability.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the main water supply and relieve system pressure before removing any existing valve or installing this unit. Use thread sealant or PTFE tape on all NPT connections and verify joint integrity before restoring supply pressure. Do not overtighten union nuts, as this can damage sealing surfaces.

Technical Specifications

• Connection Size: 1 inch
• Connection Type: Female NPT (FNPT)
• End Configuration: Double Union
• Valve Type: Pressure Reducing Valve (PRV)

Standard Information

• Brand: ZURN
• Manufacturer Part Number: z-1-nr3xldu