---
product_id: 52623542
title: "Webstone 44443WPR3 IPS LF ISO W/30 PSI PRV 3/4 E2 EXP Tankless Water Heater Service Valves 4444W Series"
brand: "webstone"
price: "£156.99"
currency: GBP
in_stock: true
category: "Tools & Home Improvement"
url: https://www.desertcart.co.uk/products/52623542-webstone-44443wpr3-ips-lf-iso-w-30-psi-prv-3
store_origin: GB
region: United Kingdom
---

# Webstone 44443WPR3 IPS LF ISO W/30 PSI PRV 3/4 E2 EXP Tankless Water Heater Service Valves 4444W Series

**Brand:** webstone
**Price:** £156.99
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Webstone 44443WPR3 IPS LF ISO W/30 PSI PRV 3/4 E2 EXP Tankless Water Heater Service Valves 4444W Series by webstone
- **How much does it cost?** £156.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/52623542-webstone-44443wpr3-ips-lf-iso-w-30-psi-prv-3)

## Best For

- webstone enthusiasts

## Why This Product

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

## Description

The Webstone Isolator exp E2 lead-free isolation valve kit for all Bosch gas tankless water heaters (44444wpr2) comes with separate hot and cold isolation valves and a pressure relief valve for commercial applications. Easy two-step installation of your tankless water heater with unsurpassed safety, features and benefits. This is a complete inlet/outlet valve system that provides everything you need for a secure installation, including full port testing and flushing of the system with easy-to-install union connections.

## Features

- Lead free - meets all federal & state standards for lead levels in Drinking water system components
- 3/4 IPS lead free isolator EXP E2 with lead free pressure relief valve
- Hot and cold set tankless water heater service valve
- Full port brass ball valves with adjustable packing gland
- Hi-flow hose drains ( 500 WOG) &pressure relief valve ( 150 psi/200K BTU)

## Images

![Webstone 44443WPR3 IPS LF ISO W/30 PSI PRV 3/4 E2 EXP Tankless Water Heater Service Valves 4444W Series - Image 1](https://images-na.ssl-images-amazon.com/images/I/31-z8JfxbqL.jpg)

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**Shop now:** [https://www.desertcart.co.uk/products/52623542-webstone-44443wpr3-ips-lf-iso-w-30-psi-prv-3](https://www.desertcart.co.uk/products/52623542-webstone-44443wpr3-ips-lf-iso-w-30-psi-prv-3)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-05*