| 摘要 |
<p>A valve 1 comprises a body portion 2 having a plurality of openings, a valve seat 6 located within the body portion, and end stops 4, 8 corresponding to an opening of the body portion. The end stops 4, 8 comprise port portions 38, 39 through which fluid may flow, and nozzles 33, 35 in fluid communication with the port portions 38, 39. The nozzles 33, 35 are configured for sealing against valve seat 6 thereby preventing flow through the valve device. The valve is openable by relative motion of the nozzles 33, 35 with respect to the valve seat 6, and adjustment means allows independent adjustment of the location of the nozzles 33, 35 with respect to the valve seat 6.</p> |
