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Plumbing

Radiator drain valves

Anonymous user 28/02/2024 - 3.46 PM

Hello, My central heating system had a leak, which has now been found. However there was no radiator drain valve installed. The system has been drained of all the water now but I'm looking to install a drain cock for future issues. When installing, does it matter if it's connected to a plastic or copper radiator piping? The leak detection guys said it's better if the connection is copper, but is plastic fine as well? Is there a risk of loosening other push fit plastic fittings below the radiator? Also is it best to install this at the lowest point in the central heating system? Thanks!

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6 Answers

Rosey Builds

Rating: 5 out of 5
Loughborough
It doesn't matter too much on the connection, only that the drain is placed at the lowest point in the system, if it isn't then you will only drain to that level and will have water left in the system.
Answered5 January 2020
1

Clayton Installations

Rating: 4.7 out of 5
Blaydon On Tyne
A drain cock should always be put at the lowest point doesn’t matter if plastic or copper but if it’s on show preference to copper and brass so it looks a great deal neater
Answered5 January 2020
0

Anonymous user

Hi Jen a drain off should be placed at the lowest point of the system (downstairs radiator). It doesn’t really matter if it’s on copper or push fit but copper on show always looks better and isn’t as bulky as push fit fittings.
Answered5 January 2020
0

Taylor Made Plumbing

Rating: 5 out of 5
Folkestone
Always put drain offs on the lowest point of the system, downstairs rad. I'd always use copper fittings when possible. I personally trust them more, plus they are more aesthetically pleasing than plastic fittings.
Answered5 January 2020
0

Anonymous user

Drain cock valve is always on the lowest point of the heating system, try and have it close to a door which leads to outside soo when draining down you don’t have to run a hose all the way through the house in the future, but copper or plastic it can we attached to you just need the right fittings for plastic
Answered5 January 2020
0

Richard Chambers - Interiors and Exteriors

Rating: 4.5 out of 5
Barnsley
It should always be fitted on the lowest point either copper or plastic. The only issue is that plastic push fit drains can be bulky.
Answered5 January 2020
0