Quick connect coupling system

In a dispensing system for the dispensing of liquid chemicals that are unsuitable for contact with a user, the combination comprising:

• a coupling device comprising a male component and a female component, both generally cylindrical in shape;
• said male and female components having a common passage sharing a common axis extending coaxially therethrough;
• said female component comprising a female tip disposed in a coaxial relationship with said passage and in fluid communication therewith;
• said female tip being adapted to receive a standpipe means thereon in airtight fashion for fluid communication with a liquid to be dispensed;
• said female component further comprising internal threads disposed on an annular wall which defines a chamber disposed within said female component in coaxial relationship with said passage;
• said chamber comprising an annular sealing surface disposed adjacent to said internal threads;
• said male component comprising an annular groove circumferentially disposed about a distal end thereof;
• said annular groove having an annular elastomeric seal disposed therein;
• said male component further comprising external threads which correspond with said internal threads of said female component whereby said male component is threadingly received within said chamber causing said elastomeric seal to sealingly engage said sealing surface in fluid-tight fashion;
• said internal and said external threads being multiple start, coarse pitch discontinuous threads providing a high ratio of axial movement to rotational movement whereby a 90.degree. rotation will fully thread and fully unthread said male component from said female component;
• said male component further comprising a male tip disposed at a proximate end adapted to receive a liquid dispensing tube in a fluid-tight fashion;
• said male component further comprising a one-way check valve disposed within said passage;
• venting means disposed in said female component in air communication with said chamber for equalizing pressure within the container during dispensing of fluid;
• said dispensing system further comprising an externally threaded shipping plug for sealingly engaging said female component during shipping of the container;
• and
• said shipping plug comprising a shaft having coarse pitch, discontinuous external threads disposed thereon adapted to threadingly couple with said internal threads of said female component in fluid-tight fashion thereby sealing the container from the outside atmosphere.