Bulb for a thermostatic expansion valve, set comprising a bulb and at least a part of a thermostatic expansion valve connected to a capillary and method for connecting a bulb and a capillary of a thermostatic expansion valve

A method for connecting a bulb and a capillary of a thermostatic expansion valve, wherein the following steps:

• selecting a bulb, said bulb having a chamber, said chamber being located within a metallic casing of said bulb and being filled with a filling adapted to influence a valve element of said thermostatic expansion valve, said bulb comprising a connection geometry, said casing comprising an opening zone within said connection geometry,
• in a connecting step connecting said connection geometry to a counterpart arranged at an end of said capillary, and
• producing an opening in said opening zone, in particular by pressing a closing member out of an opening of said opening zone into said chamber or by perforating said opening zone upon moving said counterpart towards said chamber during said connecting step.