Bleed valves on electric towel rails

[Ampo]

Hi all could someone just clarify with me that there is no need for bleed valves on electric only element towel rads?
Cheers

 

[Midwest]

I can feel the plumbers forum soundbite, get a plumber in

 

[PEG]

Thinking about it,there must be provision for failed stat,so wonder what that is? PRV plug? The early oil filled radiators had a designed rupture point,which limited grandma,getting deep fried...