Valve specific Information
High quality radiators deserve high quality valves for efficient performance and they influence the whole appearance of your finished radiator.
Finishes and Colours
A wide range of standard finishes are available from stock; in addition selected valves can be painted to match radiators ordered from colour Group 9; see individual valves for details
TRV or Manual?
Manual valves are adjusted by hand; they will allow a constant flow of water through your radiator regardless of the room temperature and radiators will only turn off when the room thermostat (usually in the hall) reaches its set point or the programmer turns the heating off. Systems may have at least two manual valves included, on a radiator that acts as a bypass for the system (usually a towel rail) and one in the same area as the room thermostat so they do not conflict with each other.
Thermostatic Radiator Valves (TRVs) monitor the ambient room temperature with a built in thermostat. They usually have between 4 to 6 set levels which you can select and the valve then opens and closes automatically to reach and maintain the desired level. If one room reaches the set temperature the radiator will effectively turn off whilst others continue to operate. TRVs can help maximise the efficiency of your system reducing energy consumption and they are now a requirement as part of building regulations relating to new builds and refurbishments.
Angled or Straight?
The choice of which format of valve to use will depend on the location of your pipe work and the position of the collectors on the radiator. The pictures opposite show how different configurations work:
- Angled from wall
- Angled from floor
- Straight from floor
- 3 Style on towel rail note how the heads are tucked neatly in line with the towel rail
If you are planning to move your radiators or change from horizontal to vertical you should discuss the amount of work involved with your installer and plan how to keep exposed pipe work to a minimum.
The vast majority of UK households have their central heating pipe work running under the floorboards and most Radiators are supplied as standard with valve connections on the side (known as Bottom Opposite End; BOE). However for a neater finish or if you are tight on space you can select optional underneath connections which are available most of our Designer ranges. Discuss with your installer the best connection options for your project.
There are a variety of different pipe sizes and materials used for heating systems in the UK; 15mm, 22mm, 28mm, in copper, plastic, iron or chrome. It is important to discuss with your installer the type of pipe work being used to ensure your valves are specified correctly.
The most common size of pipe in the UK is 15mm (also known as 1/2); often 22mm (or 3/4) pipe work is used on large or older systems with cast iron radiators. All our valves have 15mm connections as standard unless otherwise stated; if you need different connections please specify when ordering your valves.
Most pipes will be made from copper and all our valves work with this material. On older houses iron pipe work may still exist (usually 22mm 3/4); you will need to specify this to ensure your valve connections are the correct size.
Over recent years push fit plastic pipe has become more popular and some plumbers may wish to directly connect the plastic pipe to the valve but our valves are not designed to operate with plastic pipes.
In some cases chrome pipe work is used to supply water to the radiator; because chrome is a harder surface than copper or iron most valves will not grip it securely and leaks can occur; special olives are required to enable valves to grip chrome pipe work and these must be specified at time of order, please contact us on 01342 302250 if you would like more information.
The location of the pipe work for your radiator will be affected by the size of valves you select. All angled valves have a dimension shown to allow for adjusting pipe work. If you are planning to fix pipe work before receiving your radiators you should make adequate allowances for manufacturing tolerances in pipe centres.
If you are using straight valves a minimum of 150mm should be allowed from the base of the radiator for ease of installation.
We endeavour to ensure all pipe centres are correct, however manufacturing tolerances must be considered; therefore we strongly recommend that pipe work is not altered or adjusted until the new radiator or towel rail is fitted.
The Radiator Company will not accept any responsibility for claims resulting from incorrect pipe centres.