Patent ID: 7862005
Filing Date: 2011-01-04
Classification: F16K,G05D

Abstract:
1. A flow amount control valve, comprising: a housing including a pair of ports through which a fluid is introduced and discharged, a valve opening communicating with said ports and through which the fluid flows, and a valve seat that faces said valve opening; a rod disposed displaceably along said valve opening and having a valve element, said valve element being seatable on said valve seat; a guide member connected to an end of said rod and supported so as to be displaceable with respect to said housing while facing toward said valve opening; and a bellows supported between said housing and said rod, and said bellows being expandable and contractible along an axial direction under a displacement action of said rod, wherein said guide member and said valve opening including said valve seat are disposed on the same axis, and said bellows opens toward a side of said valve element and said valve seat inside said valve opening, and wherein said guide member includes a collar on an end thereof, which projects toward said rod and supports an end portion of said bellows.