| 摘要 |
<p>PCT No. PCT/SE87/00054 Sec. 371 Date Apr. 22, 1988 Sec. 102(e) Date Apr. 22, 1988 PCT Filed Feb. 5, 1987 PCT Pub. No. WO88/05880 PCT Pub. Date Aug. 11, 1988.The invention relates to a valve assembly for adjusting a fluid flow comprising a housing (1) provided with an inlet (2) and an outlet (3) for fluid and a spherical body (4) rotatably arranged in the valve housing (1) between the inlet and outlet (2, 3) and mounted sealingly against the valve housing (1), the valve body being provided with fluid flow passages (8-10; 14, 15), and an annular space (5) formed between the valve housing (1) and the valve body (4), the flow passages (8-10; 14, 15) ending in the space (5) when the valve is closed and in the inlet and outlet (2, 3) when the valve is fully open. A reduced risk of cavitation and a high sound level in high pressure conditions are obtained by the invention.</p> |
