---
product_id: 148804519
title: "Watts 25AUB-Z3 Pressure Reducing Valve, 3/4\""
brand: "watts"
price: "¥71528"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/148804519-watts-25aub-z3-pressure-reducing-valve-3-4
store_origin: JP
region: Japan
---

# Adjustable 25-75 PSI range Lead-free brass build 300 PSI max pressure Watts 25AUB-Z3 Pressure Reducing Valve, 3/4"

**Brand:** watts
**Price:** ¥71528
**Availability:** ✅ In Stock

## Summary

> 💧 Master your water flow with precision and peace of mind!

## Quick Answers

- **What is this?** Watts 25AUB-Z3 Pressure Reducing Valve, 3/4" by watts
- **How much does it cost?** ¥71528 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/148804519-watts-25aub-z3-pressure-reducing-valve-3-4)

## Best For

- watts enthusiasts

## Why This Product

- Trusted watts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Pressure Control:** Easily adjust water pressure from 25 to 75 PSI for optimal system protection and efficiency.
- • **Serviceable In-Line Design:** Simplifies maintenance and reduces downtime with easy access and repairability.
- • **High-Temperature Resilience:** Reinforced diaphragm designed to handle hot water applications without compromising performance.
- • **Versatile Connection Options:** Compatible with threaded, solder, PEX, Quick-Connect, and CPVC fittings for seamless installation.
- • **Durable Lead-Free Brass Construction:** Built to last with solid, corrosion-resistant materials that meet NSF and WaterSense certifications.

## Overview

The Watts 25AUB-Z3 Pressure Reducing Valve is a 3/4-inch, lead-free brass valve engineered for both commercial and residential plumbing systems. It features an adjustable pressure range of 25 to 75 PSI, a maximum working pressure of 300 PSI, and multiple connection types for versatile installation. Certified by NSF, UPC, and WaterSense, it ensures durability, safety, and water efficiency while protecting your plumbing infrastructure.

## Description

Series lf25aub-z3 lead free water pressure reducing valves are used in commercial and residential applications to reduce incoming water pressure for protection of plumbing system components and to reduce water consumption. It consists of a lead free brass body construction, Union Inlet connection, integral stainless steel strainer and high temperature resistant reinforced Diaphragm for hot water. The series lf25aub-z3 is available with a variety of end connections including: threaded, solder, PEX, Quick-Connect and CPVC with both Union and double Union connections. Series lf25aub-z3 has an adjustable pressure range and is serviceable In-Line. Maximum working pressure: 300psi (21 bar), adjustable reduced pressure range: 25 to 75psi (172 to 517 kpa), standard pressure setting: 50psi (344kPa).

## Features

- Size is 3/4in NPT
- Lead Free product
- Solid lead-free brass construction versatile enough to use in commercial or residential applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | APR Supply Co. |
| Part Number | LF25AUB-Z3 3/4" |
| Product Dimensions | 15.24 x 7.62 x 15.24 cm; 1.5 kg |
| Item model number | LF25AUB-Z3 |
| Size | 0.75 Inch |
| Colour | Polymer Seat |
| Material | Bronze |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Maximum Pressure | 300 Pound per Square Inch |
| Measurement System | inch |
| Certification | NSF, UPC, WaterSense |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 1.5 kg |

## Product Details

- **Material:** Bronze
- **Brand:** Watts
- **Item dimensions L x W x H:** 15.2 x 7.6 x 15.2 centimetres
- **Exterior finish:** Stainless Steel
- **Inlet connection type:** National Pipe Tapered
- **Outlet connection type:** PEX
- **Maximum operating pressure:** 300 Pound per Square Inch
- **Number of ports:** 2
- **Outlet connection size:** 0.75 inches
- **Specification met:** NSF, UPC, WaterSense

## Images

![Watts 25AUB-Z3 Pressure Reducing Valve, 3/4" - Image 1](https://m.media-amazon.com/images/I/61ufekjhulL.jpg)
![Watts 25AUB-Z3 Pressure Reducing Valve, 3/4" - Image 2](https://m.media-amazon.com/images/I/810iIxDCynL.jpg)
![Watts 25AUB-Z3 Pressure Reducing Valve, 3/4" - Image 3](https://m.media-amazon.com/images/I/719IBPiM46L.jpg)
![Watts 25AUB-Z3 Pressure Reducing Valve, 3/4" - Image 4](https://m.media-amazon.com/images/I/819BWy8GZyL.jpg)
![Watts 25AUB-Z3 Pressure Reducing Valve, 3/4" - Image 5](https://m.media-amazon.com/images/I/71H4UedoMXL.jpg)

## Available Options

This product comes in different **Colour Name, Size Name** options.

## Questions & Answers

**Q: Where this product is manufactured?**
A: It’s assembled in USA.

**Q: where is the stainless steel strainer located?**
A: The strainers are located inside , which is accessible through the two caps on the bottom!

**Q: Will the PRV work in a vertical position ?**
A: It should, it is spring loaded mining it works with water pressure and spring pressure to control the flow

**Q: how many turns is needed on the adjustment bolt before you notice a difference in water pressure ?**
A: The range on this pressure reducing valve is 25-75 PSI with 300 PSI maximum pressure as you turn the adjustment screw down(clock wise) you will see the change pretty rapidly since the amount of threads are not that many, the key is to have a pressure gauge visible so you can watch the PSI go up & down, what you do is add tendon on a coil spring internal!

## Frequently Bought Together

- Watts LF25AUB-Z3 Water Pressure Reducing Valve NPT Female Union x NPT Female, Polymer Seat, 3/4 Inch
- MEASUREMAN 0-200 PSI Water Pressure Gauge, 2-1/2'' Dial, Hose bib Pressure Gauge, Home Water Pressure Tester, Durable 3/4” Hose Thread, Water Pressure Gauge for Home

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-15*