18-11-2020, 10:02 AM
(This post was last modified: 18-11-2020, 10:02 AM by ppppenguin.)
If you have to remove a rad for decorating always use the plastic cap instead of the thermostat head. Otherwise one cold night and you might get a flood. If you can't find the cap, a small metal disc (5p?) between the head and valve should do it.
You don't need to drain down to replace the valve bodies. Just ensure there is no other open water path to either side of the valve. The rad side is easy, just turn off the lockshield on that rad. I turn off all valves elsewhere to isolate all other rads from the system. Also the valves that isolate the boiler. This minimises water loss when depressurising. If you have an open system then you need to plug the fill and vent pipes.
I probably lost less than a teaspoon of water when I did the valve this morning. Plus a few desert spoons full when I beld off the excess pressure.
You don't need to drain down to replace the valve bodies. Just ensure there is no other open water path to either side of the valve. The rad side is easy, just turn off the lockshield on that rad. I turn off all valves elsewhere to isolate all other rads from the system. Also the valves that isolate the boiler. This minimises water loss when depressurising. If you have an open system then you need to plug the fill and vent pipes.
I probably lost less than a teaspoon of water when I did the valve this morning. Plus a few desert spoons full when I beld off the excess pressure.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
