Old rad valves

[mutley racers]

These valves you turn off with s slotted screwdriver. Are these the valves you balance with? Never seen em before.

 

[turnpin]

Any pics......regards Turnpin:yes:

 

[mutley racers]

Unfortunately not. Just wondering if these valves are for balancing or not

 

[mutley racers]

They come with caps that look like mushroom heads

 

[turnpin]

Do you mean like old school or hospital type Rad valves?......regards Turnpin:biggrin:

 

[mutley racers]

No not hospital. Same size as normal valves but with a little plastic mushroom shaped screw cap

 

[SmokeyJ]

If there's a wheel head the other side then l''d assume so. Also a slot isn't very user friendly so I would class them as lockshields. I'm my experience if they are old slotted or allen key valves I try not to touch them as 9/10 times they leak.

 

[ShaunCorbs]

this type?

 

[Chalked]

Like the one here on the left?

 

[gassafe]

I tries to turn down an old lockshield that had a flat screwdriver slot, this thing stated to spray out!!! There was no stopping it, had to drain down & replace... So be careful lol!

 

[mutley racers]

None of the pictures above chaps. The caps that go on them are like trv caps but in the shape of a mushroom.

They all leak a bit but the cap has a washer in it

 

[thereisawizza]

Don't touch them!!!!

 

[mutley racers]

Here you go

 

[SmokeyJ]

Yea would be classed as lockshield. Guarantee it'll leak if touched

 

[mutley racers]

I had to touch them as was powerflushing. And yep, you were correct, all but one has started leaking. I have given this system a good flush and got some amazing amount of sludge out of it. But it is being a bugger as there are still 3 rads that get hardly any flow to them (although they did when doing the flush) only just when all other rads turned off. Wacked a screwdriver in pump and it stopped very easily so put a new pump in and it is a bit better but no where near as it should be

 

[Best]

Mutley, - I know exactly what those valves are. They are "Scanflow" valves and that is the lockshield which has a slotted screw and the threaded cap has a rubber washer inside it. They are 1970s.
The rubber washer can be replaced with a standard new high pressure ballvalve washer which are identical size.
Be careful not to over tighten the cap on as heat over the years perishes the top of them.

 

[mutley racers]

Mutley, - I know exactly what those valves are. They are "Scanflow" valves and that is the lockshield which has a slotted screw and the threaded cap has a rubber washer inside it. They are 1970s.
The rubber washer can be replaced with a standard new high pressure ballvalve washer which are identical size.
Be careful not to over tighten the cap on as heat over the years perishes the top of them.

Thanks best, I have had one disintegrate in my hands this morning already. Grrr. I am pretty sure they are all knackered as I can still hear flow through them when fully closed.

 

[Best]

Here's one that you can see the top and I have just noticed it says the name on it.

 

[Best]

Thanks best, I have had one disintegrate in my hands this morning already. Grrr. I am pretty sure they are all knackered as I can still hear flow through them when fully closed.

Ridiculous that they have only lasted 40 years! :smile:
They do really need replaced tbh. The wheel head in them are very tight and hard to turn. They have had their day.

 

[mutley racers]

Ridiculous that they have only lasted 40 years! :smile:
They do really need replaced tbh. The wheel head in them are very tight and hard to turn. They have had their day.

I totally agree. I think new rads and pipe as well

 

[oz-plumber]

I'm glad I'm not the only plumber to work on someone's 20 or 30 year old heating system, where, when I start, half or less than half of the heating system is operating correctly - but no leaks.

When I assume I'm finished - 80% of the system is working and everything is leaking.

At least with experience you have the foresight to tell the customer what will most probably happen when you start playing around with old radiators and radiator valves.