Filling device for anesthetic vaporizers

A filling device construction for filling and emptying an anesthetic vaporizer, comprising:

• a reservoir housing including a connection opening;
• a filling element including a filling canal for delivery of liquid anesthetic and a breather canal for compensating filling volume of the reservoir housing;
• a connection piece connected to the filling element and being applied to said connection opening of said reservoir in a gas-tight and liquid-tight manner, said connection piece further including a closure cap means;
• fastening means provided on said closure cap and on said reservoir housing adjacent said connection opening for guiding said closure cap into fastened connection with said reservoir housing;
• sealing means provided in said reservoir housing for sealing said connection opening at least in a liquid-tight manner providing a barrier between an exterior of said reservoir and an interior of said reservoir, said sealing means being openable via a projection depending from said connection piece and extending into an interior space of said connection opening for opening said sealing means upon said connection piece being applied to said connection opening in said gas-tight and liquid-tight manner;
• intermediate sealing means positioned adjacent said connection opening of said reservoir housing on said exterior side of said reservoir housing for providing a seal between said cap means and said reservoir housing prior to said sealing means being opened via said projection.