| 摘要 |
The present invention relates generally to a fluid level control system comprising a level sensor ( 10 ), and a valve in the form of a shut-off valve ( 12 ). The level sensor ( 10 ) is mounted to a vessel (not shown) and designed to sense the level of fluid, such as fuel, in the vessel. The shut-off valve ( 12 ) is designed to be actuated by a dry-break refuelling nozzle (not illustrated). The shut-off valve ( 12 ) is operatively coupled to the level sensor ( 10 ) via a sampling flow line ( 14 ) together with first and second hydraulic return lines ( 16 ) and ( 18 ), respectively. The shut-off valve ( 12 ) is of a normally-open configuration wherein it permits the flow of fuel from the refuelling nozzle to the vessel whilst the fluid or fuel level is below a predetermined level. The level sensor ( 10 ) is configured to effect closure of the shut-off valve ( 12 ) when the fuel level is at the predetermined level.
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