Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1977-05-31
1979-01-23
Schwadron, Martin P.
Fluid handling
Systems
Flow path with serial valves and/or closures
2511499, F16L 2900, F16L 3728
Patent
active
041355512
ABSTRACT:
A dry-break coupler attaches to an adapter for loading fluid into the bottom of a tank. The coupler and the adapter can be connected or separated without the loss of fluid, while both fittings are subjected to internal fluid pressure. The coupler is of the type used on a gasoline tank truck loading arm, and the adapter is in accordance with the standards of the American Petroleum Institute. The coupler has a tubular body that defines a central flow passage and a movable valve closure element that opens and closes the coupler flow passage. This valve closure element also actuates a central valve of an adjacent adapter. An adapter latch is mounted upon a first rotatable shaft that is pivotally mounted on the coupler tubular body. A second rotatable shaft that operates the valve closure element is mounted within the tubular body. Portions of both the first and second rotatable shafts extend in substantially parallel relationship. Mounted on the shafts is a mechanism interconnecting the shafts for both pivoting the adapter latch into locking engagement with the adapter before the valve closure element opens the flow passage and holding the adapter latch in a locked position while the flow passage is open. A single handle operates both the first and the second rotatable shafts.
REFERENCES:
patent: 2872216 (1959-02-01), Kaiser
patent: 4030524 (1977-06-01), McMath et al.
Gibbons Harold M.
Knight Houston W.
Chambers A. Michael
Edwards J. W.
FMC Corporation
Ritt, Jr. W. W.
Schwadron Martin P.
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