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
Nacelle cover
Tool bag with removable tool wall
Basket for a dishwasher
Non-phosphorus-based gellant for hydrocarbon fluids
Pipe coupling
Systems and methods for optimizing capital structure of a financial institution
Wound dressings
  Randomly Featured Patents
Acetoacetylated polymers crosslinked with carbamylmethylaminotriazines
Electrical connector with strain relief
Clock tree synthesis for low power consumption and low clock skew
Safety cap
Solar energy collector for mounting over windows of buildings for space heating thereof
Graphical user interface for a display screen
Air-conditioning control apparatus for automotive vehicles
Connection of streamlined-section struts
Cord guide and support therefor
Apparatus for manufacturing a blown synthetic hollow body with a closed bottom portion