Resources Contact Us Home
Pilot operated valves

Image Number 5 for United States Patent #4850345.

There is disclosed a pilot operated valve which includes a valve body, a main valve having a main valve member controlling fluid communication between an inlet port and an outlet port, a pilot valve including a vent passage sensing downstream pressure to open and close the main valve member as the sensed pressure is above or below a predetermined pressure, and selectively operable override means to suspend pilot operation of the valve. The override means may be means to occlude the vent passage and thus close the main valve, means to open the vent passage to atmosphere and thus open the main valve, or means to bypass the main valve.

  Recently Added Patents
Image forming apparatus
Case for electronic device
PMI feedback with codebook interpolation
TV wall mount
Die packages and systems having the die packages
System and method for converting biomass to ethanol via syngas
Remotely provisioned wireless proxy
  Randomly Featured Patents
Interactive toy unicorn
Container, such as a food or beverage container, lubrication method
Systems and methods for interacting with an implantable medical device
Method and apparatus for determining halftone line frequency estimates using MIN/MAX detection
Process for fabricating crystalline metal oxide material
Method and apparatus for performing overhead crane rail alignment surveys
Conduit retaining clip
Protected optical fiber package
Process for the production of dinitrotoluene
Method for plicating and fastening gastric tissue