Leaking CH drain

[raidwi]

Opened our CH drain to drain the system and now it won't fully close. I've fitted a new drain elsewhere on system so happy to bung this old one up, any tips?

Photo from before I opened it.

 

[terryplumb]

If you drain out and renew seals / O rings it can be re utilised.

 

[raidwi]

If you drain out and renew seals / O rings it can be re utilised.

Good point, unfortunately it is soldered on so don't have access to renew

 

[terryplumb]

You don't need to remove the drain cock from pipework to renew seal and O rings ,but you will need to drain water down. You just unscrew the knurled ,circular,part to remove the inner spindle .

 

[raidwi]

You don't need to remove the drain cock from pipework to renew seal and O rings ,but you will need to drain water down. You just unscrew the knurled ,circular,part to remove the inner spindle .

OK system is now drained so will give a go thank you

 

[raidwi]

You don't need to remove the drain cock from pipework to renew seal and O rings ,but you will need to drain water down. You just unscrew the knurled ,circular,part to remove the inner spindle .

I can't find anywhere to screw off, so would like to just remove it and plug the 15mm pipe it connects to. Any desoldering tips in a tight space? I have a fairly cheap soldering iron and heat gun in the garage

 

[terryplumb]

Neither of them will heat the fitting enough to remove.
Clean up the drain cock and show us a close up picture ,in sharp focus, of it.
There are other soldered joints near that draincock in all probability ,remove some insulation so we can see clearly

 

[raidwi]

Neither of them will heat the fitting enough to remove.
Clean up the drain cock and show us a close up picture ,in sharp focus, of it.
There are other soldered joints near that draincock in all probability ,remove some insulation so we can see clearly

In trying to tighten it to stop the leak from the spout I've rounded off the plug and it leaks a little from there now as well as the spout, so would you agree removal and capping seems the most viable answer?

 

[terryplumb]

Undo the " plug" ,the square shaped bit, fully anticlockwise. And remove it from the body completely.
Now you have shown us a clearer pic ,it's a different type of draincock to first thought. Nevertheless it can be resealed.

 

[terryplumb]

It's a type B draincock by the way and just needs one seal to replace and then screw it back in.

 

[raidwi]

Undo the " plug" ,the square shaped bit, fully anticlockwise. And remove it from the body completely.
Now you have shown us a clearer pic ,it's a different type of draincock to first thought. Nevertheless it can be resealed.

OK will try

 

[raidwi]

Undo the " plug" ,the square shaped bit, fully anticlockwise. And remove it from the body completely.
Now you have shown us a clearer pic ,it's a different type of draincock to first thought. Nevertheless it can be resealed.

OK it's out. Can I simply replace the bit I've removed as not confident it will fully tighten now it's rounded. Perhaps with this?

Made4Trade MT Cock Type B 15mm Plain Shank | Toolstation

www.toolstation.com

 

[terryplumb]

Yes ,probably. I have never tried to buy just that part on its own. Buy a new draincock and just use that part.
The rubber washer on yours is badly mashed up ,make sure some of it is not left inside stuck to the fittings mating surface. If it is you will need to clean it up or the new one probably won't seal

 

[raidwi]

Yes ,probably. I have never tried to buy just that part on its own. Buy a new draincock and just use that part.
The rubber washer on yours is badly mashed up ,make sure some of it is not left inside stuck to the fittings mating surface. If it is you will need to clean it up or the new one probably won't seal

Would prefer to take it out but how would I desolder to remove it?

 

[terryplumb]

You may regret doing so. But if you must, you need a blow torch , preferably MAPP gas ,and whilst heating the fitting would need to keep the other fittings right next to it cool ,or you would desolder those too. You then need to solder in a short piece of pipe and cap .
Much easier to sort out the draincock !!