Patent ID: 7758014
Filing Date: 2010-07-20
Classification: F16K,Y10S

Abstract:
1. A miniature needle valve for fluid control comprising a valve body comprising inlet and outlet ports, a fluid passageway between said inlet and outlet ports, a body central fluid passageway perpendicular to said fluid passageway between said inlet and outlet ports, an annular sealing surface between the outlet fluid passageway and said body central fluid passageway, a valve body sealing surface above said fluid passageway between said inlet and outlet ports, a valve bonnet with threaded engagement with said valve body for axially moving said bonnet against a portion of said valve body sealing surface, a valve stem having threaded engagement with said valve bonnet and movably mounted in relation to said annular sealing surface for moving said valve stem toward and outwardly from said annular sealing surface, and a compressible valve seal between said valve stem and said valve bonnet in order to prevent a loss of fluid past said valve stem, and said valve further comprising: a bonnet-to-body metal-to-metal seal for at least reducing and preferably preventing the loss of fluid from said valve,