Patent ID: 6148841
Filing Date: 2000-11-21
Classification: F16K,Y10T

Abstract:
A high pressure valve removably attachable to a high pressure gas cylinder, said valve comprising:a body having an inlet aperture, an outlet aperture, and a stem aperture wherein said inlet aperture is in fluid communication with said stem aperture, and wherein said outlet aperture is in fluid communication with said stem aperture, and wherein said body includes a first threaded portion formed in said stem aperture and a second threaded portion formed in said stem aperture and wherein said first and said second threaded portions are coaxially aligned;means for fluidly coupling said inlet aperture of said body to the high pressure gas cylinder;a stem having a cylindrical cross-section and including a handle end and a seal end, said stem further including an external threaded portion formed in the lateral cylindrical surface of said stem and matable with said first threaded portion of said body, said stem also including an annular channel in the lateral cylindrical surface of said stem, said annular channel disposed between said external threaded portion of said cylindrical stem and said seal end of said stem, and wherein said stem is rotatably insertable into said stem aperture of said body so that said external threaded portion of said stem engages said threaded portion of said stem aperture, and wherein said seal end of said stem prevents fluid flow between said inlet aperture and said stem aperture when said stem is fully rotatably inserted into said stem aperture of said body;seal means disposed in said annular channel of said stem for providing a fluid seal between said stem and said stem aperture of said body; anda bonnet having a cylindrical cross-section and a bonnet aperture therethrough, said bonnet including an external threaded portion matable with said second threaded portion of said stem aperture, and wherein said bonnet is disposed over said stem so that the handle end of said stem protrudes through said bonnet aperture and wherein said bonnet is rotatably inserted into said stem aperture with said external threaded portion of said bonnet engaging said second threaded portion of said stem aperture.