Patent ID: 6652247
Filing Date: 2003-11-25
Classification: F02B,F04B

Abstract:
A fluid control valve comprising:a valve member including a cupped head having a peripheral sealing surface, opposing concave and convex surfaces, and an integral guide stem extending from said convex surface; a guide member having an axial bore receiving said guide stem and providing for axial reciprocating movement of said valve member relative thereto between open and closed positions; a spring for biasing said valve member toward said closed position where the sealing surface of the head of the valve member seals against a valve seat; an inlet port surrounded by said valve seat; an outlet port; and a reciprocable pin mounted coaxially within said inlet port for reciprocating movement between a retracted position and an extended position wherein said pin is in contact with said concave surface of said cupped head, holding said valve member in said open position.