System and apparatus

An assembly for transferring liquid between a dispenser and a cartomizer portion of a smoking-substitute device, said assembly comprising:

• a first portion configured for sealably cooperating with a mutually cooperative formation of said cartomizer portion;
• a second portion connected to said first portion and configured for sealably cooperating with a mutually cooperative formation of said dispenser;
• and
• a chamber formed within said first and second portions, and including a first aperture at an end of said first portion and a second aperture at an end of said second portion;
• wherein said assembly is configurable between:
• a non-dispensing configuration in which liquid communication between said chamber and said first aperture is restricted;
• and
• a dispensing configuration in which a liquid communication pathway is opened between the chamber and said first aperture to communicate liquid between said dispenser and said cartomizer portion through a dispenser outlet and cartomizer portion inlet, and a gas communication pathway is formed between a formation on a body of said second portion and said chamber for expulsion of gas from said cartomizer portion;
• and further wherein alternation between said non-dispensing configuration and said dispensing configuration is effected responsive to application of an actuation force, exerted via an actuation formation of said cartomizer portion, to a closure member located within said chamber;
• and
• wherein, in the dispensing configuration, said first aperture includes a gas passageway within the actuation formation of said cartomizer portion.