---
product_id: 50660636
title: "SF4 Unvented Pressure Reducing Kit Inc Expansion Vessel + Check Valve for Hyco Speeflow Water Heater"
brand: "hyco"
price: "987.85 DT"
currency: TND
in_stock: true
reviews_count: 3
category: "Hyco"
url: https://www.desertcart.tn/products/50660636-sf4-unvented-pressure-reducing-kit-inc-expansion-vessel-check-valve
store_origin: TN
region: Tunisia
---

# 15mm Check Valve 2L Expansion Vessel 1/2" Pressure Valve SF4 Unvented Pressure Reducing Kit Inc Expansion Vessel + Check Valve for Hyco Speeflow Water Heater

**Brand:** hyco
**Price:** 987.85 DT
**Availability:** ✅ In Stock

## Summary

> 💡 Upgrade Your Hot Water Game!

## Quick Answers

- **What is this?** SF4 Unvented Pressure Reducing Kit Inc Expansion Vessel + Check Valve for Hyco Speeflow Water Heater by hyco
- **How much does it cost?** 987.85 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/50660636-sf4-unvented-pressure-reducing-kit-inc-expansion-vessel-check-valve)

## Best For

- hyco enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Efficient:** Space-saving design fits seamlessly into your setup.
- • **Effortless Installation:** Quick setup means more time enjoying hot water.
- • **Elevate Your Water Heating:** Experience consistent pressure with the SF4 Unvented Kit.
- • **Integrated Safety Features:** Includes a strainer for optimal performance and safety.
- • **Durable Stainless Steel Design:** Built to last, ensuring reliability and longevity.

## Overview

The SF4 Unvented Pressure Reducing Kit is a high-quality solution for your Hyco Speeflow Water Heater, featuring a 2-litre stainless steel expansion vessel, a 15mm single check valve, and a 1/2" F/F pressure reducing valve, all designed for optimal performance and durability.

## Description

Product description The SF4 kit contains a 2 litre expansion vessel and check valve to prevent expanded hot water re-entering the cold water supply. It also comes with a pressure reducing valve, for areas where water pressure is high. The SF4 kit is suitable for use with small unvented water heaters such as the Hyco Speedflow unit. Legal Disclaimer UK Mainland Delivery ONLY

Review: Good value for the money. - Works as it should.
Review: Five Stars - It is still working 5 years after installation.

## Features

- 2 Litre Stainless Steel Expansion Vessel
- Pressure Reducing Valve + Strainer
- 15mm Single Check Valve
- 1/2" F/F Pressure reducing valve

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Hyco |
| Part Number | SF4 |
| Item model number | SF4 |
| Material | stainless steel |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |

## Images

![SF4 Unvented Pressure Reducing Kit Inc Expansion Vessel + Check Valve for Hyco Speeflow Water Heater - Image 1](https://m.media-amazon.com/images/I/61yKMb1Wp-L.jpg)
![SF4 Unvented Pressure Reducing Kit Inc Expansion Vessel + Check Valve for Hyco Speeflow Water Heater - Image 2](https://m.media-amazon.com/images/I/61XLEAlAz8L.jpg)
![SF4 Unvented Pressure Reducing Kit Inc Expansion Vessel + Check Valve for Hyco Speeflow Water Heater - Image 3](https://m.media-amazon.com/images/I/51qOI0urdKL.jpg)
![SF4 Unvented Pressure Reducing Kit Inc Expansion Vessel + Check Valve for Hyco Speeflow Water Heater - Image 4](https://m.media-amazon.com/images/I/61Rm4QYRARL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good value for the money.
*by R***Y on 18 April 2021*

Works as it should.

### ⭐⭐⭐⭐⭐ Five Stars
*by V***R on 10 July 2018*

It is still working 5 years after installation.

### ⭐⭐⭐⭐⭐ Does what it's supposed to
*by L***Y on 30 March 2019*

It's difficult to rate anything that does its job less than 5*. It's the kit required for the installation of a Hyco water heater, given our conditions of pressure etc. The whole thing works well so 5*.

## Frequently Bought Together

- SF4 Unvented Pressure Reducing Kit Inc Expansion Vessel + Check Valve for Hyco Speeflow Water Heater
- Speedflow Unvented Undersink Water Heater 15 liter Capacity

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**Shop now:** [https://www.desertcart.tn/products/50660636-sf4-unvented-pressure-reducing-kit-inc-expansion-vessel-check-valve](https://www.desertcart.tn/products/50660636-sf4-unvented-pressure-reducing-kit-inc-expansion-vessel-check-valve)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-06*