| 摘要 |
<p>Disclosed is a dual stop valve assembly (30) for use in a cargo tank motor vehicle (10) having a flammable material stowing cargo tank (16) with an external pipe (20d) for dispensing the flammable material. The assembly (30) includes an external pipe connection section (36) for connecting the externa l pipe (20d) to the cargo tank (16) and has a pair of stop valves (38a, b) spaced apart and operable within the external pipe connection section (36). The assembly (30) also includes an actuator (40) for actuating opening of ea ch of the pair of self-closing stop valves (38a, b) between a flammable materia l loading/unloading position and a material transport position. The external pipe connection section (36) includes a break area (42) for promoting breaka ge of the external pipe connection section (36) along the break area (42) such that, upon breakage along the break area (42), only an amount of flammable material that is stowed within the external pipe connection section (36) and between the pair of stop valves (38a, b) is discharged. A method of operatin g a dual stop valve assembly (30). Advantageously, the present invention provides for improved safety in the transport of flammable liquids by providing an apparatus and method for reducing the amount of flammable liqui ds released in the eventof a breakaway event.</p> |
