VALVE ASSEMBLY AND VALVE MEMBER THEREFOR

摘要

A valve assembly for controlling the flow of fluid under pressure through a portion of a fluid moving structure is formed of a plurality of elements adapted to be arranged to form either an intake or an exhaust or discharge valve assembly. Each valve assembly includes a seat and cage with a valve member mounted to open and close a respective fluid flow passage through the seat in response to differential pressure. The valve head and the valve seat have opposed curves to effect self-aligning and a line contact therebetween when the valve is seated in flow closing position. The seat and cage each have a guide bore for receiving respective portions of the valve member during opening and closing movement of the valve member.