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Watts lead-free brass pressure reducing valve 3/4 inch FNPT union connections 8 inch height 6 7/8 inch length 50 psi preset 25 to 75

Watts

Watts 3/4 LF 25 AUB-Z3 Pressure Reducing Valve 3/4 in 50 psi preset 25-75 psi range

SKU CH-E9DM-K31Q1 MPN 3/4

Lead-free brass pressure reducing valve with 3/4 in FNPT union connections, preset at 50 psi and adjustable from 25 to 75 psi

  • TypeDrain Components
  • Lead-free brass construction meets potable-water safety standards
  • Factory preset at 50 psi for immediate installation readiness
  • Adjustable 25-75 psi range suits varied supply conditions
  • Built-in strainer protects downstream fixtures from debris
  • Certified to ASSE 1003 and CSA B356 for code compliance

Product Purpose

The Watts 3/4 LF 25 AUB-Z3 is a water pressure reducing valve designed for residential or light-commercial plumbing systems. It lowers incoming supply pressure to a safer preset level and protects downstream fixtures and appliances from excess force. The lead-free brass body meets potable-water standards for drinking-water installations.

Installation Checks

Verify that your supply line uses 3/4-inch FNPT union connections to match the valve ends. Confirm the system operating temperature will not exceed 160 degrees Fahrenheit and that peak pressure stays within the 300 psi maximum rating. Ensure the required 25-to-75 psi adjustment range covers the downstream pressure you need.

Included Strainer Benefit

The integral strainer traps sediment and debris before they reach the valve seat, reducing wear and helping maintain consistent outlet pressure. This built-in filtration means you do not need to install a separate strainer upstream, saving fitting space and simplifying future maintenance.

Highlights

  • Lead-free brass construction meets potable-water safety standards
  • Factory preset at 50 psi for immediate installation readiness
  • Adjustable 25-75 psi range suits varied supply conditions
  • Built-in strainer protects downstream fixtures from debris
  • Certified to ASSE 1003 and CSA B356 for code compliance

Specifications

TypeDrain Components
BrandWatts
Model3/4 LF 25 AUB-Z3

Questions about this item

Does the valve come with the union tailpieces needed for installation, or must they be purchased separately?

The valve includes FNPT union connections on both ends, so no separate tailpieces are required for standard 3/4 inch piping.

Should I select the 25 to 75 psi adjustable model or a different pressure range for a typical home supply?

The 25 to 75 psi range with a 50 psi preset covers most residential needs; choose this model when your supply pressure falls within that window.

Will the 50 psi factory preset hold steady when the heater raises water temperature to 160 degrees F?

Yes, the valve is rated for a maximum temperature of 160 degrees F and a maximum pressure of 300 psi, so the preset remains effective under those conditions.

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