A self regulating containment valve for cooling

[Kyle Harris]

So i want to create a container that is part of a system that already actively cools things that touch it. This variable cannot be changed.
What i need is a container with some sort of valve that automatically opens up at a certain temperature. Thereby allow air to circulate and reduce the cooling inside.
I know there are thermostatic valves but they tend to be heat driven, does anyone know of a material or design that will passively open when its a certain temp too cold and close around a certain temp.

I know this is an odd questions, but if anyone will know. You guys are they way.

Much appreciated
Kyle.

 

[gfd43tg]

You can look at an air to close valve and make a controller do that for you. Are you familiar with process control?

 

[CWatters]

I don't see why a bimetallic strip type couldn't be made to work at low temperatures. I don't think they are very accurate though?