Coupling assembly

摘要

A coupling assembly for fluid-flow systems is disclosed which includes both a coupler and a nipple. The mating or sealing surfaces of the coupler and nipple are protected from dirt and other deleterious substances by corresponding moveable covers. The moveable covers not only protect the mating surfaces but present flush faces for the coupler and nipple which are easily cleaned. The construction of the coupling assembly is designed so that connection of the coupler and nipple may be accomplished by using only one hand. The coupler is designed so as to render the adapter and the valve a one-piece structure.