A environmental control chamber device comprising a vacuum chamber, a controller, and at least one door is described. In an embodiment, the vacuum chamber is defined at an upper face, four or more lateral faces, and a lower face. The at least one door is connected to a respective one of the four or more lateral faces. The four or more lateral faces comprise at least one opening, and the at least one door is configured to seal the at least one opening. The controller is configured to control a pressure and a temperature within the vacuum chamber. The pressure may be a vacuum pressure, and the temperature may be a cryogenic temperature. Each door comprises a peripherally-lined seal configured to maintain a pressure within the vacuum chamber, and one or more radiation shields configured to maintain the temperature within the vacuum chamber.

A method of transporting liquid petroleum gas (LPG) comprising coupling reverse thread fittings of a first tank to reverse thread fittings of a second tank, the first tank storing the LPG; and allowing the LPG to flow from the first tank to the second tank through the reverse thread fittings of the first tank and the reverse thread fittings of the second tank.

An object of the present invention is to provide a gas storage container that is easy to transport and install. The gas storage container according to the present invention has flat upper and lower surfaces and can be stacked vertically. The gas storage container according to the present invention may include a casing that has a flat upper surface and a flat lower surface and is vertically stackable, and a gas container installed in the casing.

A method of preventing cross-contamination comprising providing a first tank having standard thread fittings, providing a second tank having reverse thread fittings, storing LPG in the second tank, and storing anhydrous ammonia in the first tank.

A vortex prevention apparatus prevents a vortex from being generated at an outlet provided in the tank member and minimizes the change in the flow rate of the fluid being discharged through the outlet when a fluid filled in a tank member such as an insulation tank is being discharged, To this end, the vortex prevention apparatus is integrally coupled to a lower cover, having at least one outlet through which the fluid filled in the insulation tank is discharged, of a lower cap of the insulation tank, and includes a prevention body having a cone shape centered on an apex portion; spacing members extending vertically and horizontally from the prevention body; and mesh hole portions formed passing through the edges of the prevention body by the spacing members.

The high pressure tank comprises a tank main body including a liner made of a resin and a mouthpiece made of a non-resin material and mounted to an open end of the liner; and a reinforcement layer provided to cover the entire tank main body and have pressure resistance. The liner includes a first contact surface arranged approximately perpendicular to a central axis of the liner to come into contact with the mouthpiece. The mouthpiece includes a second contact surface arranged to come into contact with the first contact surface of the liner. One of the first contact surface and the second contact surface includes projections, and the other includes recesses in which the projections being fitted. The second contact surface is formed in an approximately circular shape.