US 12,486,916 B2
Flapper check valve assembly
Sidney McCarra, League City, TX (US)
Assigned to SCV Valve, LLC, Santa Fe, NM (US)
Filed by SCV Valve, LLC, Santa Fe, TX (US)
Filed on Feb. 23, 2024, as Appl. No. 18/585,476.
Prior Publication US 2025/0271069 A1, Aug. 28, 2025
Int. Cl. F16K 15/03 (2006.01)
CPC F16K 15/03 (2013.01) 20 Claims
OG exemplary drawing
 
1. A swing check valve, comprising:
a body including:
an inner volume having a middle portion extending between an upstream end portion and a downstream end portion;
a wall that surrounds the inner volume; and
a flow path extending from the upstream end portion to the downstream end portion, wherein the middle portion includes the flow path and an upper recess positioned above the flow path;
a valve seat having an outer circumferential surface in contact with the wall; and
a swing assembly including a disc having an upstream surface that faces the upstream end portion when the disc is in a closed position and a downstream surface that faces the downstream end portion when the disc is in the closed position;
wherein the upstream surface of the disc includes a protrusion that protrudes towards the upstream end portion of the inner volume when the disc is in the closed position such that the protrusion extends furthest in an upstream direction at a radial center portion of the disc, and wherein the protrusion protrudes past a downstream end of the valve seat in the upstream direction.