leak Worcester heatslave 9.24

[taffey]

Hi i wonder if someone can give me some advice

I have a old Worcester heatslave boiler 9.24 and there is leak is on a valve ( its a gate valve)
the valve is on a 15mm pipe which is attached to the 22mm flow and return pipes on the central heating system What i want to know is how far to open the new valve when i put the new one on or do i keep it closed the wheel on the end of the old one has rusted away so i cant turn it to see how far it is turned on or off ? And why is it there as it seems to act like a bridge between the flow and return pipes Thanks

 

[Agile]

Sounds like its a manual bypass.

Better replaced with an automatic one.

I know that you are in Wales but a "leek" is a vegetable!

Water coming out is a "leak" !

Tony

 

[taffey]

Sounds like its a manual bypass.

Better replaced with an automatic one.

I know that you are in Wales but a "leek" is a vegetable!

Water coming out is a "leak" !

Tony

Well spotted Tony but if i was to replace with the same type of valve ( i have already bought one) how far would i have to turn it on or do you keep it off

 

[Agile]

To do the job the close it and open it until you JUST feel the cooler side start to get warm.

Usually a half to three quarters !

Tony

 

[taffey]

To do the job the close it and open it until you JUST feel the cooler side start to get warm.

Usually a half to three quarters !

Tony

Thank you Tony

Rob

 

[petit_pablo]

.......there is leek is on a valve.....

Pop it in a pan of boiling water and make up some cheese sauce for it. Lovely!

 

[45yearsagasman]

When you take the old valve out, have a look at the setting and copy it to the new valve before you fit it. That will be a good guide.

 

[Agile]

Most I come across are fully open!

It cannot be assumed that its correct.

My instructions will ensure its at about the right setting.

But an auto bypass is far better.

Tony

 

[taffey]

Most I come across are fully open!

It cannot be assumed that its correct.

My instructions will ensure its at about the right setting.

But an auto bypass is far better.

Tony

Just to be curious what would happen if the setting was not quiet right

Rob

 

[Agile]

You would have reduced flow through your rads, less heat output and your boiler would cycle more further reducing the heat output.

Its quite a common fault on a system where the owner has been fiddling.

To prevent this I remove the head from gate valves and tighten the gland nut.

Tony

 

[Steelmasons]

Usually a half to three quarters !

Tony

Pure guesswork , an impossible task to explain over the internet , most I see are only cracked open in order to give sufficient flow through boiler hex , half to three quarters of a turn will short circuit system.

You haven't a clue what size circulator has been installed on this system either.

 

[Agile]

That's why I gave instructions to set it.

Just adding the likely setting to give an idea.

Most of the turning is just to take up the slack in the thread.

To do the job the close it and open it until you JUST feel the cooler side start to get warm.

Usually a half to three quarters !

Tony