Over-pressure relief valve

Details Over-pressure relief valve Over-pressure relief valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/64

F16K 17/04 (2006.01)

Patent

CA 2023709

ABSTRACT OF THE DISCLOSURE An over-pressure relief valve to be positioned within an opening of a vessel, the relief valve having a valve member with a closed end which is positioned within the opening and which carries an O-ring adjacent to the closed end. The O-ring normally engages the vessel in a circumferential pattern surrounding the opening to seal the opening. The valve member further has a second end within the vessel and the second end is resiliently biased toward the interior of the vessel by a coil spring. The coil spring is trapped between a radial flange of the valve member, which is positioned at the second end thereof, and the inside of the vessel. An over-pressure condition within the vessel overcomes the effect of the coil spring and moves the valve member to break the sealing engagement between the O-ring and the vessel. An initial, limited degree of venting occurs through an annulus which is formed between the opening and the valve member. Further venting occurs, if needed, by way of an internal passage in the valve member which extends from the second end to an opposed pair of radial passages that are positioned entirely within the vessel when the O-ring is in sealing engagement with the vessel.

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