| 摘要 |
<p>A valve arrangement is disclosed which comprises a body (10) provided with a bore (12), first, second and third passages (14, 16, 18) communicating with the bore (12) at axially spaced locations. A valve member (24) is engageable with a first seat (20) to control fluid flow between the first and second passages (14, 16). A valve element (28) is engageable with a second seat (22) to control fluid flow between the second and third passages (16, 18). A spring (32) biasses the valve element (28) away from the second seat (22), and an extensible member (34) interconnects the valve element (28) and the valve member (24). The valve member (24) is thus biased toward the first seat (20).</p> |
