Liquid separator, particularly oil separator for compressed air systems

A liquid separator system for separating liquid from compressed air, comprising:

• a head member defining a mixture passage, a purified gas outlet and a drain opening, said head member comprising:
• a bayonet connection receptor having an inner diameter and receiving geometries;
• a liquid separator comprising:
• a cup member having a cup chamber and an open end;
• a lid member sealably closing over said open end of said cup member, said lid member secured to said cup member by a crimped connection, said lid member defining passages including:
• an inlet opening in communication with said mixture passage;
• at least one outlet opening in communication with said drain opening;
• and
• a clean pipe in communication with said purified gas outlet;
• a separating element received into said cup chamber, said separating element adhesively secured at a first end to said lid, a second end of said separating element closed over by a terminal disk, said lid, terminal disk and separating element defining a clean chamber within;
• said lid member further comprising:
• a receiving chamber in the form of an annular depression for receiving liquid droplets separated from compressed air, wherein said receiving chamber is in communication with said outlet opening of said lid;
• and
• a bayonet connection sized and configured to be received into said inner diameter of said bayonet connection receptor, said bayonet connection including
• an O-ring seal configured to provide a sealed connection between said bayonet connector and said bayonet connection receptor;
• and
• at least one contour sized and configured to releaseably engage with said receiving geometries of said bayonet connection, said contours and geometries operative to detachably mount said lid member onto said head member;
• wherein said clean pipe extends through said receiving chamber and into said clean chamber, said clean pipe configured to isolate said liquid in said receiving chamber from said purified gas outlet;
• and
• wherein head member and said lid member together define a liquid chamber therebetween, said liquid chamber interposed between said outlet opening of said lid and said drain opening of said head member, said liquid chamber guiding separated liquid droplets from said outlet openings of said lid member and said drain opening of said head member.