| 主权项 |
1. A dry pilot actuator comprising:
a housing having an interior surface defining an internal chamber with a central axis; a first actuator seat disposed along the interior surface of the housing circumscribed about the central axis; a second actuator seat disposed along the interior surface disposed and circumscribed about the first actuator seat; a seal member defining a sealed position engaged with the first actuator seat and the second actuator seat, the seal member further defining an open position axially spaced from the first and second actuator seats; a first port proximate the first actuator seat in communication with the internal chamber; a second port in communication with the internal chamber, a third port in communication with the internal chamber, the third port being isolated from the first and second port when the sealing member is in the sealed position; the third port being in fluid communication with the first port when the sealing member is in the open position, the second port being isolated from each of the first and third ports by the third sealing portion when the sealing member is in the open position; and at least one spring member disposed between the interior surface of the housing and the seal member to bias the seal member toward the open position. |
