Is it possible to 'repair' a Hep2O (Wavin) UFH flow control?

[DevsAd]

After balancing the flows, one of these blighters has started to drip very slowly from under the red cap. It feels loose to turn, so I suspect the seal around the spindle is to blame. It won't be 'worn' as such, as they don't get fiddled with for years, but this tiny adjustment was seemingly enough to set it off :-(

There's another two controllers which are very stiff to turn, so I'm not sure they even open up the desired amount when set - I'd like to get to them to lube them or slacken the gland nuts. So, is there a way to access the spindle underneath the head, and - if so - will they be tweakable, like a normal gland nut on, say, a radiator valve. Ie, is there an adjustable nut there?

Thanks.

You don't have permission to view attachments. Attachments are hidden.

 

[Ric2013]

More likely an O ring will need replacing, but that should usually be possible.

 

[DevsAd]

Thanks. I hope so, but how do I get to them?!

I don't want to risk breaking the red cap. Is there a proper way to remove it, do you know?

 

[Ric2013]

That I am afraid I don't know. It does look a bit retro, so may be a few years old and I understand your reluctance to try seeing if it just pulls off. If you can work out the brand, you may be lucky and find drawings or similar online that may help lead to an educated guess. Sorry I cannot be of much more help.

 

[Gasmk1]

definitely hep 2o wavin flow valve best bet is to contact them and see if they are reparable or they do a repair kit