Adding inhibitor to towel rail radiator

richie51 · Aug 25, 2018

Hi, I've just watched a video online on how to add inhibitor to central heating. I know I've got to turn off both valves at bottom of towel rail first. I did the left hand one easily, but I'm struggling with the right hand one. The one on the left had a cap which came off easily and I then turned off the valve which was underneath. The left hand one is very different though. It's much longer and just turns round and round when you try to remove the cap, so I can't access the valve. Does anyone know how I can access the right hand valve? Thanks.

Harvest Fields · Aug 25, 2018

richie51 said:
Hi, I've just watched a video online on how to add inhibitor to central heating. I know I've got to turn off both valves at bottom of towel rail first. I did the left hand one easily, but I'm struggling with the right hand one. The one on the left had a cap which came off easily and I then turned off the valve which was underneath. The left hand one is very different though. It's much longer and just turns round and round when you try to remove the cap, so I can't access the valve. Does anyone know how I can access the right hand valve? Thanks.

Normally you unscrew the cap at the end of the one that just spins around mate. Got a picture of it?

Rob Foster · Aug 25, 2018

one will be a wheelhead valve that turns the other a lockshield that just goes round and round - take the cap off and turn the flat shaft with pliers.

Harvest Fields · Aug 25, 2018

Rob Foster said:
one will be a wheelhead valve that turns the other a lockshield that just goes round and round - take the cap off and turn the flat shaft with pliers.

Use an adjustable spanner or the cap from the other valve. Pliers are not designed for that purpose. You will damage the spindle.

AMGasServices · Aug 25, 2018

Depends on what system you have ?

gingalig · Aug 25, 2018

Sounds like someone might get a bit wet. Make sure you drain down a bit and release any pressure you've got in your system before you try adding anything to it.

Harvest Fields · Aug 26, 2018

gingalig said:
Sounds like someone might get a bit wet. Make sure you drain down a bit and release any pressure you've got in your system before you try adding anything to it.

Ohhh man. I hoped no one mentioned that.

Rob Foster · Aug 26, 2018

There was an inhibitor cartridge - like a sealant gun which you hooked into rad bleed and force stuff in. They were not supposed to be re-usable but.............

jtsplumbing · Aug 28, 2018

Rob Foster said:
There was an inhibitor cartridge - like a sealant gun which you hooked into rad bleed and force stuff in. They were not supposed to be re-usable but..

OK until you drop the bleed screw and you still have to isolate the rad

Adding inhibitor to towel rail radiator

richie51

Harvest Fields

Rob Foster

Harvest Fields

AMGasServices

gingalig

Harvest Fields

Rob Foster

jtsplumbing

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