초록 ▼

A valve comprising a hollow cylindrical body with a valve opening at one end and a valve seat around the valve opening. A valve member is movable towards and away from the valve seat on a spindle which passes through a spindle opening opposite the valve opening. A handle is provided on the outer end

A valve comprising a hollow cylindrical body with a valve opening at one end and a valve seat around the valve opening. A valve member is movable towards and away from the valve seat on a spindle which passes through a spindle opening opposite the valve opening. A handle is provided on the outer end of the valve spindle and has a screw-threaded counterbore which is engageable with a screw-threaded spigot on the outside of the valve around the spindle opening to hold the valve member in the closed position. In this position the end face of the valve member is flush with the outside of the valve around the valve opening. The upper side of the valve member has a screw-threaded counterbore engageable with a screw-threaded spigot on the inside of the valve around the spindle opening to hold the valve in the open state and form a seal around the spindle.

대표청구항 ▼

A valve comprising: a hollow valve body; a valve opening in said valve body; a valve seat in the said valve body around said valve opening; closure means closing the valve body at the end opposite the valve opening; a spindle opening in said closure means; a valve member movable towards and away fro

A valve comprising: a hollow valve body; a valve opening in said valve body; a valve seat in the said valve body around said valve opening; closure means closing the valve body at the end opposite the valve opening; a spindle opening in said closure means; a valve member movable towards and away from said valve seat to open and close said valve; a spindle carrying said valve member and extending through the said spindle opening; first screw-threaded means on the closure means of the valve body to the outside of said valve body; second screw-threaded means fixed on the spindle outside said valve body and adapted for mating with said first screw-threaded means on said closure means of the valve body to hold said valve member against said valve seat; third screw-threaded means on the closure means of the valve body, to the inside of said valve body; fourth screw-threaded means on said spindle inside said valve body and adapted for mating with said third screw-threaded means on said closure means of the valve body to the inside of the valve body for holding said valve member away from said valve seat, said spindle being slidable axially in said spindle opening between the position in which the first and second screw-threaded means engage and the position in which said third and fourth screw-threaded means engage; and sealing surfaces carried on the closure means and on the said spindle which engage when the said third and fourth screw-threaded means engage to form a seal around the spindle opening.