| 摘要 |
<p>A fluid flow control valve has two inlets and two outlets. A control element is movable to simultaneously vary flow from the first and second inlet to the first outlet, and from the second inlet to the second outlet. The control element is responsive to the pressure at the first inlet and to a pressure intermediate the second inlet and first outlet. The arrangement is such that the flow from the second inlet to the first outlet is a predetermined multiple of the flow through the first inlet, and that excess fluid entering the second inlet is spilled through the second outlet.</p> |
