Abstract: Method for leak testing a tank head, intended to be filled with a gas under high pressure and before it enters service, which head including at least two sealing devices, referred to as an inner and an outer sealing devices, which delimit there between an intermediate space into which opens a duct which communicates with the outside, such that: said test is carried out during the manufacture of the tank assembly, after fitting the tank head and before this tank is filled with high-pressure gas, pressurized gas is injected via the duct into the intermediate space between the two sealing devices, the gas injection is stopped at a given pressure, the value of said pressure is measured via said duct.

Abstract: The disclosure relates to a connector that includes at least a female port, wherein the female port is configured for receiving, in a gas tight manner, alternatively, two male connectors of two different given types. The two male connectors can have the same thread pitch and diameter. The female port can include a female thread suitable for respectively receiving threads of the two male connectors. The female port can include two first parts of two different sealing devices, one having a seal and the other being metal-on-metal, each compatible with one of the male connectors, and each of a given type different to the other.

Abstract: Method for leak testing a tank head, intended to be filled with a gas under high pressure and before it enters service, which head including at least two sealing devices, referred to as an inner and an outer sealing devices, which delimit there between an intermediate space into which opens a duct which communicates with the outside, such that: said test is carried out during the manufacture of the tank assembly, after fitting the tank head and before this tank is filled with high-pressure gas, pressurized gas is injected via the duct into the intermediate space between the two sealing devices, the gas injection is stopped at a given pressure, the value of said pressure is measured via said duct

Abstract: Some embodiments are directed to a female port, which is suitable for receiving, in a tightness manner, alternatively, two male connectors of two different given types having the same thread pitch and diameter, comprises a female thread suitable for receiving one of the threads of the two male connectors and two first parts of two different sealing devices, one having a seal and the other being metal-on-metal, each compatible with one of said male connectors, each of a given type different to the other.