What is a Drain-off fitting used for?

  A drain-off fitting is an optional item which should be fitted to radiators to make it easy for Installers to remove water from the the heating system when, for example, a radiator is needed to be removed, replaced or a system is upgraded or extended. There are many ways of this being provided and it is not necessary to be fitted to every radiator, however, the more drain-off fittings that are used, the easier and more convenient it will be to remove the water.