Valve member with fixed seal shutoff
AssigneeStanadyne, Inc.
InventorAlfred M. Moen
Life of this patent
Estimating the term…
Abstract
A fluid valve includes a sleeve having inlet and outlet ports and a stem movable within the sleeve. The stem has inlet and outlet port means with the outlet port means being movable into register with the sleeve outlet port. A fixed seal member is positioned on the sleeve, out of the path of flow through the stem to the sleeve, with the stem outlet port being closed by the seal member when the valve is in a closed position.
Claims29
Fluid valve means including sleeve means, inlet and outlet port means in said sleeve means, a stem movable within said sleeve means between open and closed positions and having inlet and outlet port means, said stem inlet port means being in communication with said sleeve means inlet port means, said stem outlet port means being movable into register with said sleeve means outlet port means to thereby define a path of flow through said valve means from said communicating stem and sleeve means inlet port means through said stem outlet port means and said sleeve means outlet port means, and a fixed seal member carried by said sleeve means and for closing flow between said said sleeve means inlet and outlet port means, said seal member being annular, at least in part, with the annulus being arranged about an axis perpendicular to the axis of said stem, said seal member being spaced from said sleeve means outlet port means with said path of flow through said valve means never being through said seal member at any position of said stem to thereby protect said seal member from movement and wear caused by dynamic water pressure and foreign matter within the water, said stem outlet port means being in register with and closed by said seal member when said stem is in a closed position.
Dependencies are inferred from the claim text.