LPG tank control valve system
First Claim
1. A multi-functional control valve system for an LPG tank, the valve system comprising:
- (a) a frame having an upper and lower surface and a flange about the lower surface for fastening the frame over an opening in the tank;
(b) a fill port in the frame to deliver LPG from a supply source to the tank, the fill port extending through the frame from the upper surface to the lower surface;
(c) a manual shut-off valve means associated with the fill port to close off the fill port and prevent passage of LPG through this port;
(d) a delivery port in the frame, physically spaced from and independent of the fill port, for passage of LPG from the tank to a delivery line for utilization at a location remote from the tank;
(e) a manual shut-off valve means associated with the delivery port to close off the delivery port and prevent passage of LPG through this port;
(f) fuel level monitor means associated with the frame responsive to the level of LPG in the tank when the frame is mounted on the tank;
(g) automatic shut-off valve means operatively associated with the fuel level monitor means and positioned in the fill port automatically to move to a closed position to close the fill port and stop delivery of LPG to the tank when the fuel in the tank reaches a predetermined level, and automatically releasable from said closed position when delivery of LPG to the fill port is stopped.
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Accused Products
Abstract
A multi-functional control valve system for an LPG tank. The valve system comprises, on a single frame, a fill port for delivery of LPG from a supply source to the tank, a manual shut-off valve for the fill port, a delivery port, independent from the fill port, for passage LPG from the tank to a delivery line for utilization at a location remote from the tank, a manual shut-off valve for the delivery port, fuel level monitor associated with a frame responsive to the level of LPG in the tank and an automatic shut-off associated with the fuel level monitor and positioned in the fill port automatically to move to close the fill port and stop delivery of LPG to the tank when the fuel in the tank reaches a predetermiend level, and automatically releasable from that closed position when LPG in the tank falls below that level, as indicated by the monitor. This valve system provided in one compact frame, which may be readily fitted or retro-fitted to a tank, many desirable features for safe and convenient LPG tank operation.
63 Citations
24 Claims
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1. A multi-functional control valve system for an LPG tank, the valve system comprising:
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(a) a frame having an upper and lower surface and a flange about the lower surface for fastening the frame over an opening in the tank; (b) a fill port in the frame to deliver LPG from a supply source to the tank, the fill port extending through the frame from the upper surface to the lower surface; (c) a manual shut-off valve means associated with the fill port to close off the fill port and prevent passage of LPG through this port; (d) a delivery port in the frame, physically spaced from and independent of the fill port, for passage of LPG from the tank to a delivery line for utilization at a location remote from the tank; (e) a manual shut-off valve means associated with the delivery port to close off the delivery port and prevent passage of LPG through this port; (f) fuel level monitor means associated with the frame responsive to the level of LPG in the tank when the frame is mounted on the tank; (g) automatic shut-off valve means operatively associated with the fuel level monitor means and positioned in the fill port automatically to move to a closed position to close the fill port and stop delivery of LPG to the tank when the fuel in the tank reaches a predetermined level, and automatically releasable from said closed position when delivery of LPG to the fill port is stopped. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification