Fire hydrant control valve
AssigneeSigelock Systems, L.L.C.
InventorGeorge Sigelakis
Life of this patent
Estimating the term…
Abstract
A method of draining a standpipe includes moving a valve control device toward a closed position sufficient to uncover at least one drain hole before the valve control device achieves a fully closed position, the at least one drain hole being disposed in a slot of a saturation ring and draining a contents of the standpipe through a drain route to an external portion of the standpipe, the drain route is defined by the drain hole in the valve seat ring, drain ports in the drain ring, outlet notches and a drain channel in the saturation ring. The drain hole is radially offset from each of the drain ports in the drain ring and each of the drain ports are radially offset from each of the outlet notches in the saturation ring. A valve control device is also disclosed.
Claims20
A method of draining a standpipe comprising:
- moving a valve control device toward a closed position sufficient to uncover at least one drain hole before the valve control device achieves a fully closed position, the at least one drain hole being disposed in a slot of a valve seat ring;
- and
- draining a contents of the standpipe through a drain route to an external portion of the standpipe, the drain route is defined by the at least one drain hole in the valve seat ring, a plurality of drain ports in a drain ring, a plurality of outlet notches and a drain channel in a saturation ring, the drain route providing a fluid communication route between an outlet portion of the valve seat ring in the standpipe and an external portion of the standpipe, wherein each of the at least one drain hole in the valve seat is radially offset from each of the plurality of drain ports in the drain ring and wherein each of the plurality of drain ports are radially offset from each of the plurality of outlet notches in the saturation ring.
A method of flushing a standpipe drain route comprising:
- opening a valve control device a first amount sufficient to allow water to flow into the standpipe under pressure from a water supply pipe, wherein the first amount uncovers at least one drain hole in a slot of a valve seat ring, the at least one drain hole being in an outlet portion of the valve seat ring;
- flushing pressurized water through the drain route, the drain route is defined by the at least one drain hole in the valve seat ring, a plurality of drain ports in a drain ring, a plurality of outlet notches and a drain channel in a saturation ring, the drain route providing a fluid communication route between an outlet portion of the valve seat ring in the standpipe and an external portion of the standpipe, wherein each of the at least one drain hole in the valve seat is radially offset from each of the plurality of drain ports in the drain ring and wherein each of the plurality of drain ports are radially offset from each of the plurality of outlet notches in the saturation ring.
A valve control device comprising:
- a valve top plate having a conical base with at least three stabilizer arms extending therefrom, each of the at least three stabilizer arms having a flat outer surface wherein each of the at least three stabilizer arms has an inner edge opposite the outer surface, the inner edge having a concave curve having one or more radii wherein the at least three stabilizer arms are disposed around the conical base so that centerlines of the stabilizer arms are spaced apart by between a range of 90 and 135 degrees;
- a valve seat rubber;
- a valve bottom plate securing the valve seat rubber between the valve bottom plate and a flat bottom surface of the valve top plate, the valve bottom plate, the valve seat rubber and the conical base being mounted on the operating stem;
- and
- a valve seat ring having a plurality of slots, each of the plurality of slots corresponding to one of the at least three stabilizer arms.
Dependencies are inferred from the claim text.