| 摘要 |
A clog resistant, pilot operated pilot valve having two fluid paths, one path for fluid flow from the valve input to the valve output, and the second path for fluid flow through input and output pilot apertures. The opening and closing of the pilot apertures controls the flow of fluid between the input and output of the pilot valve. A clog resistant pilot operated valve in which fluid flows through the pilot fluid path only during the time of transition from an valve open to a valve closed condition, or vice-versa, thereby reducing the probability of failure due to contaminants blocking the pilot activation path. A clog resistant pilot operated valve in which the plunger, used to open and close the pilot fluid paths, is ribbed in construction to reduce the probability that contaminants will cause seizure of the plunger movement.
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