| 摘要 |
<p>The valves comprises a valve body (10) of magnetic material, a valve seat member (15) of magnetic material having a non-magnetic insert (17) defining the seat and a coil (38) surrounding a portion of the valve body and the valve seat adapted to be controlled by a microcomputer to provide pulses to a ball (19) positioned between the valve seats and thereby control the flow through the valve. In one form the valve includes a second set of opposed valve seats (22, 29), a second ball (30), and a second coil (42). In each form, a sleeve (35, 39) surrounds the valve seats and the balls and hydraulically isolates them from the coil associated therewith.</p> |
