---
product_id: 346839334
title: "Watts LFN45B Series 3/4\" Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, Double Union Solder Inlet and Outlet, Elastomer Disc, Adjustable Pressure 25 to 75 psi, Maximum 400 psi"
brand: "watts"
price: "€ 311.19"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/346839334-watts-lfn45b-series-3-4-lead-free-cast-copper-silicon
store_origin: FI
region: Finland
---

# Lead-free Easy install Temp range Watts LFN45B Series 3/4" Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, Double Union Solder Inlet and Outlet, Elastomer Disc, Adjustable Pressure 25 to 75 psi, Maximum 400 psi

**Brand:** watts
**Price:** € 311.19
**Availability:** ✅ In Stock

## Summary

> 💦 Every drop matters—make yours count!

## Quick Answers

- **What is this?** Watts LFN45B Series 3/4" Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, Double Union Solder Inlet and Outlet, Elastomer Disc, Adjustable Pressure 25 to 75 psi, Maximum 400 psi by watts
- **How much does it cost?** € 311.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/346839334-watts-lfn45b-series-3-4-lead-free-cast-copper-silicon)

## 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

- • **Protect Your Plumbing:** Reduce incoming water pressure to safeguard your systems.
- • **Effortless Installation:** Double union solder connections for quick setup.
- • **Thermal Expansion Control:** Bypass feature prevents plumbing damage.
- • **Trusted Quality Since 1874:** Innovative solutions for water safety and efficiency.
- • **Adjustable Pressure Settings:** Customize pressure from 25 to 75 psi.

## Overview

The Watts LFN45B Series 3/4" Lead-Free Water Pressure Reducing Valve is designed to efficiently manage water pressure in various applications, ensuring plumbing protection and reduced water consumption. With features like easy installation, thermal expansion protection, and adjustable pressure settings, this valve is a reliable choice for both residential and commercial use.

## Description

Watts LFN45B Series 3/4" Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, Double Union Solder Inlet and Outlet, Elastomer Disc, Adjustable Pressure 25 to 75 psi, Maximum 400 psi

## Features

- LEAD-FREE WATER PRESSURE REDUCTION: The Watts 3/4" Lead-Free Water Pressure Reducing Valve reduces incoming water pressure to protect plumbing systems and reduce water consumption in commercial, industrial, and residential applications. This assembly includes a removable integral stainless steel strainer, thermoplastic seat module, thermal expansion bypass, and a sealed spring case for waterwork pit installations.
- EASY INSTALLATION AND MAINTENANCE: This lead-free water pressure reducing valve is designed for straightforward installation with easy handling and in-line serviceability, featuring double union solder inlet and outlet connections that simplify the installation process.
- THERMAL EXPANSION PROTECTION: The valve includes a bypass feature that effectively controls thermal expansion pressure, preventing potential damage to the plumbing system. It has an operating temperature range of 33° F (0.5° C) to 180° F (0.5° 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.

## Product Details

- **Material:** Stainless Steel,Lead
- **Brand:** Watts
- **Item dimensions L x W x H:** 2.44 x 5.63 x 7.38 inches
- **Exterior Finish:** Stainless Steel
- **Inlet Connection Size:** 0.75 Inches
- **Inlet Connection Type:** Solder
- **Outlet Connection Type:** Union Joint
- **Maximum Operating Pressure:** 300 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.75 Inches

## Images

![Watts LFN45B Series 3/4" Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, Double Union Solder Inlet and Outlet, Elastomer Disc, Adjustable Pressure 25 to 75 psi, Maximum 400 psi - Image 1](https://m.media-amazon.com/images/I/712y4+bpIjL.jpg)

## Available Options

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

## Frequently Bought Together

- Watts LFN45B Series 3/4" Lead-Free Cast Copper Silicon Alloy Water Pressure Reducing Valve, Double Union Solder Inlet and Outlet, Elastomer Disc, Adjustable Pressure 25 to 75 psi, Maximum 400 psi
- 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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**Shop now:** [https://www.desertcart.fi/products/346839334-watts-lfn45b-series-3-4-lead-free-cast-copper-silicon](https://www.desertcart.fi/products/346839334-watts-lfn45b-series-3-4-lead-free-cast-copper-silicon)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-08*