Resources Contact Us Home
Apparatus for checking the set pressure of a safety valve

Image Number 2 for United States Patent #4527415.

The apparatus for checking the set pressure of a safety valve (300) comprises: a first tank (100) filled with a first fluid (110) at a pressure less than the set pressure, and connected to the fluid inlet tubing (310) of the valve; a second tank (200) filled with a second fluid (210) at a pressure greater than the set pressure; means (410) for rapidly putting the two tanks into communication with each other; and means (500, 510, 520) for simultaneously measuring the pressure in the fluid inlet tubing and the displacement of the valve plate.

  Recently Added Patents
Medical injector
Integrating map-reduce into a distributed relational database
Video surveillance system employing video primitives
Data storage device and block selection method for a flash memory
Transistor and display device
Vehicle hood
Information processing apparatus, information outputting method and computer program storage device
  Randomly Featured Patents
Treatment of infectious diseases with HSP70-peptide complexes
Liquid medium treatment method and device
Method of producing multilayer piezoelectric resonator
Method of forming multiple layer collector structure for bipolar transistors
Encapsulated, gas-insulated high-voltage apparatus having increased resistance to arc activity
Parking assisting device
Putter head
Liquid crystal compounds having perfluoroether terminal portions
Method for casing a wellbore