For storage or application reasons it is important for some gases to bring it into a liquid form. Meca-Inox especially developed the cryogenic ball valves PY4 (-50°C) and the PY4CY (-200°C) for this application with temperatures down to -200°C.
Cryogenic Ball Valve product brochure
(Cryogenic) Ball Valves brochure
For cryogenic conditions (-196ºC)
Bronze / stainless steel ball valve, for medical...
The Meca-Inox emergency shut-off valve
Ball Valve PY4CY-Fire safe
3-way ball valve for cryogenic use (-196°C)
For light cryogenic use (-50ºC)
Also for cryogenic use
Cryogenic Valve Maintenance Instructions