| 摘要 |
<p>A valve assembly including a body (12) having an inlet port (14), an outlet port (16), and a valve seat (20) having a passageway (22) connecting the inlet and the outlet ports. A valve member (24) is movable along an axis (30) extending through the passageway of the valve seat to close and open the passageway, and an electrical solenoid assembly (28) moves the valve member upon being energized to control fluid flow between the inlet and the outlet ports. The valve assembly also includes a fluid-tight bellows (34) positioned to apply a force to the valve member in opposition to a force applied to the valve member by the fluid flow between the inlet and the outlet ports, and a pressure balancing passageway (32) connects the inlet port to the bellows. The valve assembly further includes a housing (38) received over the solenoid assembly and having a flange (40) received against the valve body. A seal (44) is positioned between the flange of the housing and the valve body, and a collar (46) is secured in a continuous manner to the valve body over the housing flange, thereby securing the housing to the valve body and applying a sealing force to the seal in a substantially even manner.</p> |
