Patent ID: 9677391
Date: 2017-06-13
CPC Classifications: E21B,F16K,Y10T

Claim:
1. A pressure relief device for relieving over-pressure conditions in high pressure fluid delivery systems, the pressure relief device comprising: a valve body having an inlet and an outlet, and a linearly extending throughbore having opposite ends at which the inlet and outlet are disposed, the valve body being two distinct inlet and outlet members; a rupture disc welded to the valve body between the inlet and outlet members so that the rupture disc is secured to the valve body via a weld and is disposed along the linearly extending throughbore spaced from the opposite ends of the throughbore at which the inlet and outlet are disposed; a frangible dome wall portion of the rupture disc having a reverse-acting orientation in the valve body bore to have a convex side thereof facing the inlet of the valve body with the valve body throughbore having only the frangible dome wall portion therein; a flat, outer ring portion of the rupture disc extending about the frangible dome wall portion thereof; and an annular wall of one of the inlet and outlet members having a predetermined radial thickness, a radially inner annular surface extending about the throughbore, a radially outer surface, and an end surface extending for substantially the full predetermined radial thickness of the annular wall between the radially inner and outer surfaces and supporting and securing the rupture disc outer ring portion thereon.