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
Method and system for accomplishing user equipment purge
Automobile body
Optoelectronic devices and a method for producing the same
Method of fabricating CIGS by selenization at high temperature
Nucleic acid sequences encoding secE/sec61-gamma subunits of protein translocation complexes
Laser processing a multi-device panel
Maize variety X00C175
  Randomly Featured Patents
Curved wall block
Control apparatus of semiconductor switch
Process of making a frozen whipped topping
Kinase inhibitors
Proteins and nucleic acids encoding same
System and method for remote monitoring and control of network devices
Composition for dyeing human keratin materials, comprising a fluorescent dye and a particular sequestering agent, process therefor and use thereof
Method and apparatus for controlling a flotation cell
Method of forming CMOS imager with capacitor structures