Watts
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Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
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Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Reduce incoming water pressure to protect plumbing systems and reduce water consumption.
Watts LF25AUB-Z3 Series 1" Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi
Item #: 221667208

Watts LF25AUB-Z3 Series 1" Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat,

90% of respondents would recommend this to a friend

Item #: 221667208

XCD 737

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Reduce incoming water pressure to protect plumbing systems and reduce water consumption.
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What Stands Out

Lead-Free Safety
Constructed from lead-free copper silicon alloy, ensuring safe drinking water while maintaining compliance with health regulations and reducing potential contaminants.
Adjustable Pressure
Flexible pressure settings ranging from 25 to 75 PSI allow precise control over water flow, adapting easily to various plumbing systems for optimal performance.
Durable Design
Built with a robust polymer seat and able to withstand maximum pressures of 300 PSI, ensuring longevity and reliability in high-pressure scenarios, outperforming many competitors.

Product Details

Shop Watts LF25AUB-Z3 Series 1 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, NPT Female Union x NPT Female Outlet, Polymer Seat, Adjustable Pressure 25 to 75 psi, Maximum 300 psi online at a best price in Montserrat. B0FHC1TYF2
Brand NameWatts
Model NumberLF25AUB-Z3
Global Trade Identification Number00098268330427
Unit Count1 Count
ManufacturerWatts Water Technologies
Number of Items1
UPC098268330427
Item Type NameNPT Female Union x NPT Female
Item Weight5.1 pounds (2.31 kg)
Manufacturer Part Number9309
Material TypeCast Copper Silicon Alloy
Exterior FinishStainless Steel
Inlet Connection TypeNational Pipe Tapered
Outlet Connection TypeFNPT
Maximum Pressure300 psi
Number of Ports2
Thread Size1 Inch (2.5 cm)
Thread TypeNPT
Connector TypeThreaded
Valve TypePressure Reducing Valve
Item Dimensions3.9 x 7.4 x 8.5 inches (9.9 x 18.8 x 21.6 cm)
Inlet Connection Size1 inches (2.5 cm)
Outlet Connection Size1 inches (2.5 cm)
Size1 Inch (2.5 cm)
Specification MetSDWA or RLDWA
MaterialCast Copper Silicon Alloy
BrandWatts
Item dimensions L x W x H3.9 x 7.4 x 8.5 inches (9.9 x 18.8 x 21.6 cm)
Maximum Operating Pressure300 psi

Who Should Buy?

Suitable For
  • Homeowners

    Ideal for homeowners needing to regulate water pressure within safe limits, providing durable performance and lead-free materials.

  • Plumbers

    Professionals will appreciate its easy installation, adjustable pressure settings, and reliability in maintaining consistent water pressure.

  • Commercial Use

    Suitable for commercial buildings requiring dependable pressure regulation to protect plumbing systems from high-pressure damage.

Not Suitable For
  • Older Plumbing Systems

    Not ideal for homes with outdated plumbing that may not handle modern valve specifications without risk of leaks.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the function of the Watts LF25AUB-Z3 Water Pressure Reducing Valve?

    Answer: The Watts LF25AUB-Z3 Water Pressure Reducing Valve is designed to regulate and maintain a consistent water pressure within plumbing systems. By reducing incoming municipal or well water pressure, it helps prevent damage to pipes, fixtures, and appliances. This is particularly essential in systems with high water pressure, preventing leaks and ensuring optimal water flow for faucets, toilets, and irrigation systems.
  • Question: Is the Watts LF25AUB-Z3 valve compliant with lead-free standards?

    Answer: Yes, the Watts LF25AUB-Z3 valve is made from a lead-free cast copper silicon alloy, making it compliant with lead-free standards. This ensures that it is safe for use in potable water applications, protecting the health of your family and environment. The lead-free construction is crucial for drinking water systems, keeping contaminants out and maintaining water purity.
  • Question: How do I install the Watts LF25AUB-Z3 valve?

    Answer: Installing the Watts LF25AUB-Z3 valve requires basic plumbing skills. First, turn off the water supply. Then, position the valve in line with the plumbing system, ensuring proper orientation. Use Teflon tape on the threaded connections for a secure fit. Tighten the NPT female union and outlet connections using a wrench. Finally, turn the water supply back on to check for leaks and ensure proper pressure regulation.
  • Question: What are the benefits of using a pressure reducing valve like the Watts LF25AUB-Z3?

    Answer: Using the Watts LF25AUB-Z3 pressure reducing valve offers several benefits, including extended lifespan of plumbing fixtures and appliances and reduced risk of leaks and water damage. It also aids in conserving water, as it helps maintain optimal flow rates. This valve is particularly beneficial in homes with a high inlet pressure, providing both efficiency and protection to your plumbing system.
  • Question: What materials are used in the construction of the Watts LF25AUB-Z3?

    Answer: The Watts LF25AUB-Z3 is constructed from lead-free cast copper silicon alloy, known for its durability and resistance to corrosion. The polymer seat enhances reliability during operation and prevents wear over time. This combination of materials ensures that the valve remains dependable, even under varying pressure conditions, making it a long-lasting solution for your water pressure regulation needs.
  • Question: What is the maximum inlet pressure for the Watts LF25AUB-Z3 valve?

    Answer: The Watts LF25AUB-Z3 valve is designed to handle a maximum inlet pressure of 300 PSI. This capability allows it to function effectively in a wide range of water supply systems, ensuring that high incoming pressures do not lead to excessive water flow or system damage. Properly adjusting the valve helps maintain the desired pressure for various applications within your plumbing system.
  • Question: Can the Watts LF25AUB-Z3 be used in both residential and commercial settings?

    Answer: Absolutely, the Watts LF25AUB-Z3 is versatile and suitable for both residential and commercial applications. Its robust construction and efficient pressure regulation make it ideal for household plumbing, irrigation systems, or larger installations in commercial buildings. Whether it's managing water pressure in a home or maintaining optimal flow in a restaurant, this valve is a reliable choice.
  • Question: How do I adjust the pressure on the Watts LF25AUB-Z3 valve?

    Answer: To adjust the pressure on the Watts LF25AUB-Z3 valve, locate the adjustment screw usually found on the upper side of the valve body. Use a screwdriver to turn the screw clockwise to increase pressure or counterclockwise to decrease it. It’s important to make small adjustments and then check the output pressure. This allows for fine-tuning to achieve the optimal pressure for your specific needs.
  • Question: What is the typical lifespan of the Watts LF25AUB-Z3 valve?

    Answer: The expected lifespan of the Watts LF25AUB-Z3 valve can vary depending on water quality, pressure fluctuations, and usage. However, with proper installation and maintenance, it typically lasts many years. Regularly checking for signs of wear or leaks can help ensure that the valve continues to function optimally. For those with high-frequency usage, routine inspections are advisable to catch any potential issues early.
  • Question: Where can I buy the Watts LF25AUB-Z3 Series 34 Lead-Free Water Pressure Reducing Valve?

    Answer: You can buy the Watts LF25AUB-Z3 Series 34 Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve at Ubuy. They offer a convenient online shopping experience, ensuring that you have easy access to this reliable plumbing fixture. Ubuy provides a range of plumbing supplies, making it a great destination for your home improvement needs.

Watts Relief Valves LF25AUB-Z3 Editorial Review

  • ubuy Montserrat

**** The Watts LF25AUB-Z3 3/4" Water Pressure Reducing Valve has garnered a positive reception from customers, highlighting its effectiveness in regulating high water pressure and improving overall water system performance. With many users transitioning from older models, especially in homes with extraordinary water pressures, the LF25AUB-Z3 has proven to be a reliable and efficient replacement. Customers have reported significant differences in their plumbing systems after installation, including reduced water hammer, improved functioning of appliances like refrigerators and toilets, and substantial savings on water bills—some noting reductions of 15-30% without changing usage habits. Installation of the LF25AUB-Z3 is frequently described as straightforward, allowing users to upgrade their plumbing systems with minimal hassle. The factory preset of 50psi and adjustable range up to 75psi provides flexibility for varied home environments, which is particularly beneficial for those living in high-pressure areas. Furthermore, the durability of the valve has impressed long-term users, with some reporting years of trouble-free operation. Overall, the LF25AUB-Z3 is viewed as a valuable investment for homeowners facing issues related to high water pressure. Its ability to enhance the performance and longevity of plumbing systems, coupled with its cost-effectiveness compared to older models, solidifies its recommendation as an essential tool for plumbing maintenance. **

Customer Reviews & Ratings

96 customers ratings
  • 5 Star
    78%
  • 4 Star
    7%
  • 3 Star
    5%
  • 2 Star
    2%
  • 1 Star
    8%

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Pros

  • Effective in reducing high water pressure, minimizing water hammer.
  • Improves performance of appliances, such as icemakers and toilets.
  • Straightforward installation process.
  • Adjustable pressure settings (up to 75psi).
  • Positive long-term durability, with many users reporting years of reliable use.
  • Can lead to significant savings on water bills.

Platform Trust & Buyer Confidence

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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Order now and get it around Thursday, September 24

QTY:

Only 6 items left in stock.
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Features & Benefits

  • 1-inch lead-free brass construction ensures safety and longevity.
  • Easily adjustable pressure range between 25 to 75 psi.
  • Features a bypass for thermal expansion pressure control.
  • Simple installation with versatile connections including PEX and CPVC.
  • Includes a removable stainless steel strainer for easy maintenance.
  • Designed for commercial, industrial, and residential applications.

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