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
Sparse data compression
System and method for oscillator frequency control
Isolation rings for blocking the interface between package components and the respective molding compound
Comparison of visual information
Field-programmable analog array with memristors
Air filter
Address generation unit for accessing a multi-dimensional data structure in a desired pattern
  Randomly Featured Patents
Target for laser cathode ray tube and fabrication method thereof
Defrosting system for a heat exchanger
Managing computer resources
Wall-installed type air conditioner
Gene expression profiling from FFPE samples
Roller for belt stretching mechanism
Methods of insulating with plastic structures containing thermal grade carbon black
Sealer apparatus for plastic film processing including an adjustably mounted seal bar, particularly for bag making machines
Laser produced plasma EUV light source having a droplet stream produced using a modulated disturbance wave
Roofing system including insulation and cover boards