Connecting a water fed piece of equipment such as a water dispenser, coffee machine, vending machine or combination oven usually involves adapting the connection from mains copper cold water pipe to flexible tubing or a vending hose. While this can be achieved with 1 simple fitting, doing it correctly and more importantly, legally, requires water control devices such as a non-return valve. Other devices such as pressure reducing valves (PRV) and water blocks prevent equipment or property damage in the case of pressure fluctuations or leaks.
Although the components can be purchased separately and assembled during the appliance installation, pre-assembled mains water installation kits are available in a variety of specifications to ensure a convenient, safe and professional install.
The following guide will explain what an installation kit is, the advantages of using one and the different configurations available.
A mains water installation kit is a generic term that describes a collection of close coupled water control devices. The most common devices used in installation kits include isolation valves, single or double non-return valves (also known as a check valve), pressure limiting valves, water blocks and water block reset devices.
Other common terms used to describe a mains water installation kit include install kit, installation rail and install rail.
What an install rail does largely depends on the devices used in the rail but the main purpose is to speed up appliance installs and ensure they are fully compliant with section 6 (backflow prevention) of the Water Regulations Guide. Compliance is achieved with a non-return (check valve) and the other devices add a range of other benefits, all of which are outlined below:
Please note: Items 4 and 5 on the image is a single component combining an isolation valve and double check valve. It has a check valve both before and after the isolation valve.
Other than to comply with water regulations and to benefit from the advantages each install rail component provides; install rails save time and provide piece of mind.
Spending time on-site assembling various components is both inefficient and increases the possibility of leaks from bad connections. Purchasing a pre-assembled fully tested kit, which uses high quality WRAS approved components, is not only faster but usually yields better results. For a comparison, it’s a bit like spending time and effort building a kit car in your garage when a mass produced car will cost less and be more reliable – it’s generally considered to be for enthusiasts only!
WRAS stands for Water Regulations Advisory Scheme. Their aim is to contribute to the protection of public health by preventing contamination of public water supplies and encouraging the efficient use of water by promoting and facilitating compliance with the Water Supply (Water Fittings) Regulations.
While there are a variety of different configurations available from a number of manufacturers, we offer a comprehensive range of mains water installation kits, which include a range of different components depending on your application. The table below outlines the available kits:
|Isolation (Shut Off) Valve|
|Double Check (Non-Return) Valve|
|Tamper Proof Non Adjustable PRV|
|Honeywell Adjustable PRV|
|Water Block Reset|
All install rails are available with a 1/4″ push fit outlet with some also available with a 3/8″ push fit outlet and/or 15mm copper stems. However almost any variant can be made (minimum order quantity applies) to suit your exact requirements.
View our range of mains water installation kits today and make sure your installations are both quick and hassle free and compliant with backflow prevention water regulations.