Abstract: A valve for safeguarding the outer container of a double wall vacuum-insulated container for low boiling liquified gases against a pressure increase in the insulation space after a loss of vacuum comprises a valve housing fastened in the outer container, a valve plug and an O-ring which, as a result of deformation, act as a sealing element between the valve housing and the valve plug. The dimensions of the valve housing and seal plug causing deformation of the O-ring in the radial direction and the influence of the outside air pressure causing simulataneous deformation in the axial direction.

Abstract: A closure for a discharge-proof cryocontainer includes a locking stopper which can be inserted in the container neck while forming a gas escape gap. The gas escape gap is filled at least in part over the entire circumference with a polyamide foam.

Abstract: A double walled insulated container for storing low boiling liquified gases includes inner and outer containers with insulation therebetween. A tubular neck connects the openings of both containers. The joints between the neck tube and the respective containers is designed as conical seated joints whereby the container openings are shrink fitted onto the neck tube with adhesive applied to the conical surface.

Abstract: A device is provided for producing a cold treatment gas from nitrogen and air for the cryotherapy of rheumatic diseases in which liquid nitrogen vaporizes and is mixed in the desired ratio with the dry air which is at a higher pressure. The device includes a vessel for the storage of the liquid nitrogen which has a capacity for carrying out at least one or more treatments. Heat exchanging apparatuses are installed in the vessel for channeling a portion of the air which is at a higher pressure. A blending intersection for blending vaporized nitrogen, cooled air and non-cooled air is attached to the vessel. A blower is provided with a dryer having an outlet pipe which branches to a connection with the blending intersection and to a connection with the heat exchanging apparatus.