Leaking drain off radiator valve;

[Hilly]

Radiator newbie here, alert!

So, all my radiators are fitted with drain off valves, it's the actual drain off valve part which is leaking. It's only a very very slight leak but leaves a small pool of water onto my bathroom floor (luckily it's tile). The water is clear, good news!

However, I don't know how to go about stopping the leak. Is it a matter of tightening it up and if so, where? Or would the valve need replacing and if so, how?

 

[Mark A]

On my drain off valves they have a square bolt which the radiator bleeding key should fit. Just nip it up and it should be fine.

Or I have seen them with a larger square bolt on the side which you can tighten with a spanner.

 

[Hilly]

On my drain off valves they have a square bolt which the radiator bleeding key should fit. Just nip it up and it should be fine.

Or I have seen them with a larger square bolt on the side which you can tighten with a spanner.

I'll give it a go; I'll be at home in half hour so I'll let you know!

Appreciate the response.

 

[Nightglow]

On my drain off valves they have a square bolt which the radiator bleeding key should fit. Just nip it up and it should be fine.

Just be gentle tightening it, might only need tightening a few millimetres to stop the drip, too much & you will crush the washer/ o ring inside, & have a even bigger leak.

 

[~Divine~Wind~]

Aye unscrew it to make it leak more then go about tightening it til it stops.

 

[Hilly]

Didn't get chance to give this a proper once over last night, as I was helping friends move; I'll get around to it later hopefully! Appreciate the suggestions

 

[jenylio]

Starting from the top of the radiator check the bleed valves, It is important to start at the top as drips from bleed valves can drip onto the radiator valves, you may them assume that the radiator valve is leaking.Using a piece of tissue wipe off any signs of water, then press the tissue around various points to locate the source of the leak. this would sure help you ...