What's the noun for valvulae? Here's the word you're looking for.
valve
A device that controls the flow of a gas or fluid through a pipe.
A device that admits fuel and air into the cylinder of an internal combustion engine, or one that allows combustion gases to exit.
(anatomy) One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction
“The diagnosis of subclinical valvulitis and valvulopathy influences the secondary prophylaxis of rheumatic fever and endocarditis.”
“The other is a healed rheumatic valvulitis with marked degenerative changes due to hemodynamic injury and possibly acquired degenerative calcific stenosis as well.”
“Twenty-one percent of patients examined had valvulitis or endocarditis.”
