Radiator valve question

[Regent]

Morning DIYers

I’m struggling to figure out what part I need to finish off connecting a new rad installation.

The pic shows the pipe with its current drainage valve, the size is approx 27mm (???) the rad has a normal 15mm entry.

I bought a 22mm to 15mm coupler but it’s too small (I bought before measuring assuming I knew what I needed).

Can someone let me know what I need please??

 

[motorbiking]

can you put an extension on the other end?

 

[Regent]

Sorry, I’ve got an extensionon already, the positioning is fine the pipe is leaning back a little in the pic.

My issue is the current fitting on the pipe is too big for the extension/rad which is 15mm

 

[Regent]

Pic

 

[terryplumb]

There are two types of threads on radiator valves, and two corresponding types of extensions. Your rad valve is 3/4 bsp thread and conical face , the extension is 15 mm compression. Is your intent to add another piece in between to make up the gap ,or just showing us like it is for illustration ? Anyway you have the wrong extension for that valve.

 

[Regent]

Cheers Terry

My intention was to get something along these lines :

http://m.builderdepot.co.uk/28mm-x-15mm-compression-reducing-coupling.html

But wanted some confirmation this would work?? Or a suggestion of what I might well need instead.

 

[terryplumb]

That won't do,its for connecting tube to tube ,of differring sizes. Your valve is a 3/4 bsp thread ( male) union. You have the wrong rad tail extension ,just buy the correct one ??

 

[Regent]

Cheers again Terry, any links to show me exactly what I’m after?

 

[terryplumb]

See eBay item no 2513 42843050 " radiator valve extension universal adjustable for 1/2" trv or 3/4" lockshield"