Resources Contact Us Home
Double acting pressure relief valve with low pressure seal

Image Number 5 for United States Patent #6305412.

A pressure relief valve that includes a sealing arrangement with a cantilevered seal that prevents fluid from escaping from a system if the differential pressure is only slightly positive yet permits fluid to be released from the system if the internal system pressure exceeds a predetermined pressure differential. In a further embodiment, the pressure relief valve includes a further scaling arrangement with a further cantilevered seal, which is normally closed, but if the internal system pressure should decrease below the external pressure a predetermined amount the second scaling arrangement opens to allow fluid into the system to thereby equalize the pressure and thereby prevent collapse of the system.

  Recently Added Patents
Method for generating multi-antenna signals
Method for transitioning between Ziegler-Natta and metallocene catalysts in a bulk loop reactor for the production of polypropylene
Multiple angle bend for high-voltage lines
Method and system for establishing enhanced key when terminal moves to enhanced universal terminal radio access network (UTRAN)
Wireless communication apparatus, a method of wireless communication, and a program for wireless communication
Electronic device
Quantum dot template for fast and simultaneous detection of different infectious agents
  Randomly Featured Patents
Automatic translation method
Ink cartridge and inkjet printer
Document processing
Pulse oximeter alarm simulator and training tool
Antiviral 4-substituted-2-deoxy-2,3-didehydro-derivatives of .alpha.-D-neuraninic acid
Composition as an additive to create clear stable solutions and microemulsions with a combustible liquid fuel to improve combustion
Construction block
Multifunctional additives
Machine for continuously casting battery grids
Meat smoking and merchandise display case