| 摘要 |
<p>An indexing valve suitable for use with soil/refuse decontamination apparatus (in which apparatus a resource is supplied along a fluid line and via a lance to soil/refuse to be treated) sequentially switches the resource to a plurality of outlets in turn. The valve may utilise the energy of the resource to mechanically drive the indexing mechanism or may comprise a stepping motor. A signal which initiates a change in the destination of the resource may be an interruption in the supply of that resource or may be an electrical signal. The electrical signal passed between the apparatus and the valve may be transmitted along reinforcement wires in the fluid line.</p> |
