US 12,422,042 B2
Butterfly valves
Paweł Kwaśniewski, Olawa DS (PL)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Jul. 13, 2023, as Appl. No. 18/351,673.
Claims priority of application No. 22187354 (EP), filed on Jul. 27, 2022.
Prior Publication US 2024/0035574 A1, Feb. 1, 2024
Int. Cl. F16K 1/226 (2006.01)
CPC F16K 1/2261 (2013.01) 18 Claims
OG exemplary drawing
 
1. A valve disc for a butterfly valve, the valve disk comprising: a disc body, wherein the disc body comprises: first and second faces; an outer periphery; at least one engagement means configured to receive a shaft for coupling the valve disc to a valve body of the butterfly; a main groove suitable for receiving a seal element, wherein the main groove extends along the outer periphery to form a continuous groove; and an introduction groove, wherein the introduction groove has a centreline (CL2) and extends from a groove mouth opening in one of the faces of the disc body to an intersection with the main groove; wherein the main groove is shaped so that the seal element can only be inserted into or removed from the main groove via the introduction groove; wherein a cross-section of the main groove in a plane perpendicular to the direction in which the main groove extends (CL1) is a shape such that the seal element cannot be pulled out of the main groove other than in a direction along the centreline (CL2) of the introduction groove.