Valve override apparatus
AssigneeInternational Basic Economy Corporation
InventorLouis A. Swickley
Life of this patent
Estimating the term…
Abstract
A fluid valve especially adapted for manually controlling pilot valves and other fluid valves. The manual override valve includes an axially slideably movable plunger which is contained and recessed within a fluid passageway in the valve. Slide bar positioning means are included for holding the plunger in a predetermined axial position to control fluid flow through the fluid passageway. The slide bar and plunger are color coded for visual determination of the plunger position. For safety considerations, the override valve requires two-hand operation using a probe smaller than the override valve passageway in which the plunger is mounted.
Claims22
A fluid valve means for manually controlling the operation of another fluid valve comprising:
- a valve body portion having a first passageway terminating at one end at a surface and at the other end adapted to communicate with a fluid source;
- a second fluid passageway intersecting said first passageway and adapted to communicate with a fluid passageway of the fluid valve it is adapted to control;
- a plunger axially movably mounted in said first passageway and being movable between a first axial position in which one of its ends is contained within said first passageway adjacent to the said surface of said valve body and a second axial position in which said one end is recessed behind said surface of said body;
- said plunger in said first axial position permitting fluid flow between said other end of said first passageway and said second passageway, and said plunger in said second axial position preventing fluid flow between said other end of said first passageway and said second passageway;
- positioning means for holding said plunger in said second axial position;
- and axial movement limiting means for preventing said plunger from extending out of said first passageway;
- said positioning means including an elongated member slidably mounted for movement between first and second positions across the path of axial movement of said plunger;
- said member including a pair of apertures, one of said two apertures having a width less than the width of said plunger, said one aperture being in axial alignment with said plunger when said member is in said second position and said plunger is in said second axial position, the other of said two apertures being in alignment with said plunger when said member is in said first position and said plunger is in said first axial position.
A manual override fluid valve for controlling other valves comprising a body having a longitudinal bore passing therethrough with first and second open ends and a cross bore passing transversely through said body and intersecting said longitudinal bore;
- a plunger axially movably mounted in said longitudinal bore, said plunger having first and second ends and being movable between a first axial position in which its first end is contained within said longitudinal bore adjacent said first open end thereof and a second axial position in which said first end is recessed behind said first open end, said plunger in said first axial position permitting fluid flow between said second end of said longitudinal bore and said cross bore, and said plunger in said second axial position preventing fluid flow between said second end of said longitudinal bore and said cross bore;
- positioning means for holding said plunger in said second axial position including slidable means movable between first and second positions for engaging said first end of said plunger, said slidable means being mounted for reciprocation across and through said longitudinal bore and including an aperture allowing access to said plunger through said longitudinal bore but holding said plunger in said second axial position when said slidable means is in said second position;
- and means for limiting the axial movement of said plunger for preventing said plunger from extending out of either end of said longitudinal bore.
Dependencies are inferred from the claim text.