Any ideas on how to bleed these valves?

[Leeccc]

Hi all, my towel rail is only half heating up and I'm guessing it needs bleeding, thing is it hasn't got your usual bleed valves installed, so how do I go about bleeding this rail? Hmm it won't let me add pics??.
Basically its a flat head screwdriver kind of valve head, I've tried searching on various websites and there is nothing matching
Thankyou

 

[Aquarius]

Why won’t it let you add pics? Are you able to google said towel rail and add a link?

 

[Leeccc]

Hi all, my towel rail is only half heating up and I'm guessing it needs bleeding, thing is it hasn't got your usual bleed valves installed, so how do I go about bleeding this rail? Hmm it won't let me add pics??.

Hi all, my towel rail is only half heating up and I'm guessing it needs bleeding, thing is it hasn't got your usual bleed valves installed, so how do I go about bleeding this rail? Hmm it won't let me add pics??.
Basically its a flat head screwdriver kind of valve head, I've tried searching on various websites and there is nothing matching
Thankyou

Thankyou

Why won’t it let you add pics? Are you able to google said towel rail and add a link?

Hi, it was the browser I'm guessing this is an old towel rail.
[automerge]1607284687[/automerge]

Why won’t it let you add pics? Are you able to google said towel rail and add a link?

That valve is on both sides.

 

[Aquarius]

Looks like a flat bladed screwdriver would work, not too smaller one as it might chew the screw slot.

 

[Leeccc]

Looks like a flat bladed screwdriver would work, not too smaller one as it might chew the screw slot.

Ok Aquarius thankyou, where would the air vent from though out of curiosity? Normal valves have a small hole?

 

[Aquarius]

Ok Aquarius thankyou, where would the air vent from though out of curiosity? Normal valves have a small hole?

Really old ones don’t, I think they just work as a seal, so start to undo it and the water will push the air out.