| 摘要 |
<p>PCT No. PCT/DE90/00332 Sec. 371 Date Mar. 19, 1991 Sec. 102(e) Date Mar. 19, 1991 PCT Filed May 10, 1990 PCT Pub. No. WO90/14500 PCT Pub. Date Nov. 29, 1990.A pressure-limiting valve having high flow rates, especially for uses as a safety valve with mine props and the like, uses a tubular main-valve member whose interior communiciates with the valve inlet and has lateral bores opening into the valve outlet when the bores are shifted past a sealing ring in the valve housing. A pilot-valve body is received in the tubular valve and the valve spring bears upon the tubular valve. The main valve is shifted by differential pressure.</p> |
