Patent ID: 6880568
Filing Date: 2005-04-19
Classification: F16K,Y10T

Abstract:
1. A pressure relief system to detect and abate an overpressure condition of a pressurized fluid disposed in a conduit, comprising: a valve assembly coupled to the conduit; an actuator configured to actuate the valve assembly to establish an overpressure path for the pressurized fluid; a piston assembly coupled to the conduit; a pressure responsive member configured to mechanically fail when the pressure of the pressurized fluid exceeds a threshold pressure; and a multi-port valve disposed between the piston assembly and the pressure response assembly and comprising a spool that moves from a first position to a second position upon failure of the pressure responsive member, wherein the movement of the spool to the second position causes control fluid to flow through the spool to the actuator assembly which in turn actuates the valve assembly to establish said overpressure path.