Patent ID: 6068023
Filing Date: 2000-05-30
Classification: F16K,F24F,F25D,Y10T

Abstract:
A valve assembly for clearing air conditioning drain lines with pressure or vacuum comprising:a hollow valve body having an inlet member, an outlet member, an open top portion, and a base portion; anda hollow, vertically removable valve plug in spaced relationship within said valve body, said valve plug proximally engaging said valve body and having and a blocking portion for selectively preventing fluid communication between said inlet and outlet members and defining an open area within said valve body to allow fluid communication between said inlet and outlet members,said valve plug rotatable from a first position, to a second position, to a third position wherein the first position permits fluid communication between said inlet and outlet members, the second position permits fluid communication between said inlet member and said open top portion and prevents fluid communication with said outlet member, and the third position permits fluid communication between said outlet member and said open top portion and prevents fluid communication with said inlet member; said valve plug being rotatable relative to said valve body following vertical movement of said valve plug within said valve body,wherein said valve plug further comprises a generally horizontal groove, and said valve body comprises a set screw adapted to engage the groove preventing vertical movement of said valve plug relative to said valve body in excess of vertical movement required for rotation.