Bonnetless compact design globe valve
A one-piece valve body having an elongated main body portion and a branch body portion extending transversely from said main body portion between the longitudinal ends thereof, said main body portion having a through flow passage extending lengthwise thereof, said passage having a stationary valve seat defining a valve opening which is transversely aligned with and opens toward said branch body portion,Globe Valves said through flow passage including inlet and outlet sections which respectively communicate with opposite sides of said valve opening, said branch body portion being hollow and having a central cylindrical internal opening therethrough, said central cylindrical internal opening comprising a disc guide chamber extending axially outwardly from said through flow passage and being transversely aligned with said valve seat, an inside screw threaded portion extending axially outwardly from the outer end of said disc guide chamber and a stuffing box chamber extending axially outwardly from the outer end of said inside screw threaded portion to the outer end of said branch body portion, said stuffing box chamber being of larger diameter than said inside screw threaded portion and having an annular end face at the inner end thereof which end face extends radially inwardly to the outer end of said inside screw threaded portion, said branch body portion having a radially outwardly enlarged head portion at the outer end thereof, said enlarged head portion being externally screw threaded from the outer end thereof to a location close to but spaced outwardly from the inner end of said enlarged head portion;GLOBE VALVE a yoke having an internally screw-threaded annular fixing portion which is screw-threaded onto said enlarged head portion of said branch body portion, the length of the internal screw thread of said annular fixing portion being equal to the length of the external screw thread of said enlarged head portion so that the inner end of the screw thread of said annular fixing portion is bottomed on the inner end of the screw thread of said enlarged head portion; a valve operating screw having a stem that extends through said internal opening of said branch body portion, a valve disc mounted on the inner end of said stem for movement within said disc guide chamber toward and away from sealing engagement with said valve seat; an annular seat ring sleeved on said stem, said seat ring having an externally threaded portion at the inner end thereof and which is screw threaded into said inside screw thread portion of said internal opening of said branch body portion, said seat ring having a radially outwardly projecting annular flange at the outer end thereof and projecting into said stuffing box chamber, said flange having an inner annular surface opposed to said annular end face of said stuffing box chamber, said inner annular surface having ridges which bite into said annular end face to prevent leakage of fluid therepast; and packing material disposed in said stuffing box chamber to prevent leakage of fluid.Cast Gate, Globe, Check Valves
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