| 摘要 |
<p>A motorized bypass valve (10) having a valve body (12) with cylindrical valving chambers (14) with a single inlet (18) and a first and second outlet ported (50,52) to the chamber (14), such with convexo-concave face seals (56,58) disposed over the ports. A rotary valving member (42) having a partial cylindrical valving surface (44) is disposed in the valving chamber (14) and valving surface contacting the face seals (56,58). A motor housing (70) is then spin welded onto the valve body (12) to seal the valving chamber with the half shaft of the valving member (42) extending into the motor housing (72) and sealed by an O-ring (66). The motor and gear train are then assembled into the housing for driving the half shaft. The motor housing (72) is closed by a cover (74) welded thereover.</p> |
