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NASA expansion valve (VCC)

NASA expansion valve (VCC)

NASA expansion valve (VCC)

(OP)
I was wondering if anyone knew some manufacturers/companies that have been contracted to design an expansion valve for vapor compression cycles in space applications (NASA).  Water/Ammonia, propylene glycol, ethylene glycol are some fluids it might be designed to handle specifically.  If you cannot think of any, what are some well known companies that carry expansion valves?  

On a separate issue the same goes for stop valves.

Sorry I am not much of a valve guy so I am somewhat lost here.

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