---
product_id: 146093524
title: "Watts Backflow Preventer 3/4 In Water Pressure Reducing Valve, Npt Thread Union X Npt Female, Max Work 400 psi, Adjust 25-75 psi"
brand: "watts"
price: "$U18368"
currency: UYU
in_stock: true
reviews_count: 11
category: "Watts"
url: https://www.desertcart.uy/products/146093524-watts-backflow-preventer-3-4-in-water-pressure-reducing-valve
store_origin: UY
region: Uruguay
---

# Adjustable 25-75 psi range 400 psi max pressure Lead-free corrosion-resistant body Watts Backflow Preventer 3/4 In Water Pressure Reducing Valve, Npt Thread Union X Npt Female, Max Work 400 psi, Adjust 25-75 psi

**Brand:** watts
**Price:** $U18368
**Availability:** ✅ In Stock

## Summary

> 💧 Control your flow, protect your home — pressure perfected.

## Quick Answers

- **What is this?** Watts Backflow Preventer 3/4 In Water Pressure Reducing Valve, Npt Thread Union X Npt Female, Max Work 400 psi, Adjust 25-75 psi by watts
- **How much does it cost?** $U18368 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/146093524-watts-backflow-preventer-3-4-in-water-pressure-reducing-valve)

## 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

- • **Built to Last:** Durable lead-free copper silicon alloy body with bronze-sealed spring cage ensures long-lasting, corrosion-resistant performance.
- • **Trusted Legacy:** From Watts, a brand with over 140 years of innovation dedicated to safeguarding your water systems.
- • **Thermal Expansion Bypass:** Smart bypass feature protects your system by managing pressure spikes caused by thermal expansion.
- • **Precision Pressure Control:** Maintain optimal water pressure with adjustable 25-75 psi settings for ultimate plumbing protection.
- • **Effortless Installation & Maintenance:** NPT threaded union connections and removable stainless steel strainer simplify setup and cleaning.

## Overview

The Watts 3/4" Lead-Free Water Pressure Reducing Valve offers reliable pressure regulation up to 400 psi with an adjustable range of 25-75 psi. Featuring a durable lead-free copper silicon alloy body, bronze-sealed spring cage, and removable stainless steel strainer, it ensures corrosion resistance and easy maintenance. Designed for commercial and residential use, it includes a thermal expansion bypass to prevent pressure damage, all backed by Watts’ 140+ years of water technology expertise.

## Description

3/4 IN Lead Free Water Pressure Reducing Valve, NPT Thread Union x NPT Female, Max Work 400 psi, Adjust 25-75 psi_This 3/4 inch water pressure reducing valve is 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, NPT threaded union female inlet by NPT female outlet connection, integral stainless steel strainer, thermoplastic seat, bronze sealed spring cage for accessible outdoor waterworks or pit installations and a thermal expansion bypass. The temperature range is 33 to 180 degrees F (0.5 to 82 degrees C). Suitable for up to 400 psi (27.6 bar), the pressure range can be adjusted from 25 to 75 psi (172 to 517 kPa) with the standard setting at 50 psi (345 kPa)._Corrosion-resistant adjusting screw and sealed cage for waterworks pit installations_NPT threaded union female inlet by NPT female outlet_Thermoplastic seat and bronze cage_Integral stainless steel strainer removable for cleaning_Specifications_Adjustable Reduced Pressure Range 25 to 75_Adjustable Reduced Pressure Range-BAR 1.8 to 5.2_Body Material Lead Free Copper Silicon Alloy_Brand Watts_Corrosion Resistant Coating No_Disc Material Reinforced EPDM_EAN 098268333701_Gauge Option No Gauge_High Pressure Reduced Pressure Range Does Not Apply To Product_High Pressure Reduced Pressure Setting Does Not Apply To Product_Inlet Connection Size 3/4 IN_Inlet Connection Type Female Threaded_Inlet Thread Type NPT_Lead Free YES_Maximum Operating Temperature-Fahrenheit 180_Maximum Working Pressure-BAR 27.60_Maximum Working Pressure-PSI 400_Minimum Temperature - Celsius 0.50_Minimum Temperature-Fahrenheit 33_Outlet Connection Size 3/4 IN_Outlet Connection Type Female Threaded_Outlet Thread Type NPT_Part Number 0009589_Series LFN55B-M1_Standard Reduced Pressure Setting-BAR 3.40_Standard Reduced Pressure Setting-PSI 50_Strainer Yes_Strainer Material Stainless Steel_Thermal Expansion Bypass Yes_Trim Material Bronze_Type Kit_Valve Style Standard

Review: Well Made, easy installation. - This is an upgraded version of the one it is replacing. It is a heavy duty brass, machined and threaded. It is serviceable and adjustable. Mine holds a nice steady pre-set pressure at 48 psI. I recommend this. I did the install myself. Good choice.
Review: Control - Fit and works great.

## Features

- LEAD-FREE WATER PRESSURE REDUCTION: The Watts 3/4" Lead-Free Water Pressure Reducing Valve is installed at or near meters to cost-effectively control water pressure flowing to appliances and outlets in commercial, industrial, and residential applications. This assembly includes an NPT threaded union female inlet by NPT female outlet connection, a removable integral stainless steel strainer, thermoplastic seat, bronze-sealed spring cage for accessible outdoor waterworks or pit installations, and thermal expansion bypass.
- EASY INSTALLATION AND MAINTENANCE: This lead-free water pressure reducing valve is designed for straightforward installation with easy handling and in-line serviceability, featuring a thread union by NPT female connection that simplifies the installation process.
- THERMAL EXPANSION PROTECTION: The valve includes a bypass feature that effectively controls thermal expansion pressure, permitting the flow of water back through the valve into the main when pressures - due to thermal expansion on the outlet side of the valve - exceed the pressure in the main supply. It has an operating temperature range of 33° F (0.5° C) to 180° F (82° C).
- VERSATILE PRESSURE ADJUSTMENT: This valve is suitable for pressures up to 400 psi (27.6 bar) and allows for an adjustable pressure range between 25 to 75 psi (172 to 517 kPa), with a standard setting at 50 psi (345 kPa).
- EVERY DROP COUNTS: Water. It's in our name and close to our hearts. Since 1874, Watts Water Technologies has been delivering innovative technologies that make the world's most precious resource safe and accessible. Everything we design is made to keep the Earth's most precious resource safer, cleaner, and more useful for our customers. Our family of brands offers one of the most varied product lines in the world, with world-class, water-related solutions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008LY8T0K |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #72,912 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #62 in Industrial Pressure Regulators |
| Brand | Watts |
| Color | Adjust 25-75 psi |
| Customer Reviews | 4.6 4.6 out of 5 stars (248) |
| Date First Available | November 3, 2012 |
| Exterior Finish | Brass |
| Global Trade Identification Number | 00098268333701 |
| Included Components | Valve |
| Inlet Connection Size | 0.75 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Item Package Quantity | 1 |
| Item Weight | 2 pounds |
| Item dimensions L x W x H | 7.38 x 5.63 x 2.44 inches |
| Item model number | LFN55BM1 U ¾ |
| Manufacturer | Watts |
| Material | Lead Free Copper Silicon Alloy |
| Maximum Operating Pressure | 400 Pound per Square Inch |
| Number of Ports | 2 |
| Outlet Connection Size | 0.75 Inches |
| Outlet Connection Type | FNPT |
| Part Number | 0009589 |
| Pattern | Valve |
| Product Dimensions | 7.38 x 5.63 x 2.44 inches |
| Size | 0.75 Inch |
| Specification Met | ASSE Standard 1003; (ANSI A112.262), CSA Standard B356, IAPMO |
| Style | NPT Threaded Union Female Inlet x NPT Female Outlet |
| UPC | 098268333701 |
| Warranty Description | Warranty |

## Product Details

- **Brand:** Watts
- **Exterior Finish:** Brass
- **Inlet Connection Size:** 0.75 Inches
- **Inlet Connection Type:** National Pipe Tapered
- **Item dimensions L x W x H:** 7.38 x 5.63 x 2.44 inches
- **Material:** Lead Free Copper Silicon Alloy
- **Maximum Operating Pressure:** 400 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.75 Inches
- **Outlet Connection Type:** FNPT

## Images

![Watts Backflow Preventer 3/4 In Water Pressure Reducing Valve, Npt Thread Union X Npt Female, Max Work 400 psi, Adjust 25-75 psi - Image 1](https://m.media-amazon.com/images/I/81DKqzDVkLL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well Made, easy installation.
*by K***R on August 1, 2024*

This is an upgraded version of the one it is replacing. It is a heavy duty brass, machined and threaded. It is serviceable and adjustable. Mine holds a nice steady pre-set pressure at 48 psI. I recommend this. I did the install myself. Good choice.

### ⭐⭐⭐⭐⭐ Control
*by R***Y on January 21, 2026*

Fit and works great.

### ⭐⭐⭐⭐⭐ Perfect replacement for my failed valve.
*by J***H on November 29, 2023*

Looking at the old valve, it looked like it was larger than 3/4”. My old failed unit tag was very hard to read but I decided to go for the 3/4”. This valve is perfect. There is a union on one end. So you can open the union and then rotate the valve off. Re-assemble it equally as easy. Measured pressure after install was 50 psi.

## Frequently Bought Together

- Watts Backflow Preventer 3/4 In Water Pressure Reducing Valve, Npt Thread Union X Npt Female, Max Work 400 psi, Adjust 25-75 psi
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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-01*