Rad valves

[Dannyparty92]

Yesterday removed rad removed valves from the tails and all the rubber seals have perished and split so I need to remove the valves. But on the tails there doesent seem to be any where for me to put some adjustables round to remove the old tail? Also is 3/4" the size of all radiator tail tappings? Thank you

 

[Whn1]

Most are 3/4 but usually trvs are 1/2 and some brands of lockshields. What rubber seals do you mean? Some have seals in the tail, is that what you mean? Put a photo up if you can.

 

[dancinplumba]

rad tappings are mainly 1/2"

 

[Dannyparty92]

Yeah rubbers in the tail so I need to replace the tails. I ment the tappings in the radiator there all 3/4" ain't they?

 

[Whn1]

Yup, unless its something special, try just ptfe'n it up and giving it a crank.

 

[Dannyparty92]

Thanks. So any ideas on how to remove the old tails it looks like its just thread then the tail no where to put some adjustables on?

 

[dancinplumba]

Yup, unless its something special, try just ptfe'n it up and giving it a crank.

really ?

 

[herbert]

Is it the big Allen key inside the tail?

 

[Whn1]

really ?

Really what? I'm struggling to keep my eyes open.. What am I saying?

 

[Dannyparty92]

Not sure I'm guessing as it ain't got any places to put adjustables on it is. I think I have one of those Allen keys in my bag somewhere but if I haven't is there any possible way of doing it with a set of grips?

 

[dancinplumba]

Really what? I'm struggling to keep my eyes open.. What am I saying?

arent rad tappings 1/2" not 3/4" ?

 

[PlumbBobBob]

were the valves leaking?

 

[PlumbBobBob]

arent rad tappings 1/2" not 3/4" ?

yes they are, you then have either 3/4 or 1/2 connections to the valve

 

[Whn1]

Sometimes. Just buy a rad spanner Radiator Spanner | NoLinkingToThis

 

[Best]

If it's the tails with the flange that use a larger nut, then they are usually an Allen key to remove, though some old types have a couple of lumps inside. A set of grips on the edge of the flange on the tail will remove them if they're on with ptfe (& you are scrapping them). Some have a O ring seal as well as a taper & will perish. Replace whole lot.

Most rads & valves are 1/2" but some rads & valves are 3/4".

 

[Dannyparty92]

Ok thank you. I will try find my Radiator Allen key.

 

[JCplumb]

If you're not using the tail again then you may be able to loosen it by inserting one jaw of your water pump pliers in there and turning it that way.

 

[SimonG]

Or if you have the valve off as well, tighten the valve back on and spanner on the valve will turn the tail out.

 

[Dannyparty92]

Cheers guys appreciate the tips

 

[Irish]

I find if the the "Allen key" bit has been worn out 2 big flat head screwdrivers shoved in can do the trick or as mentioned before tighten the valve back on