Patent ID: 11927273
Assignee: SWAGELOK COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 18:
19. An actuated valve assembly comprising:
a valve body including a valve seat disposed between inlet and outlet passages, and a fixed orifice restriction provided in at least one of the inlet and outlet passages;
a valve element assembled with the valve body and axially movable between a closed position in sealing engagement with the valve seat, to block flow between the inlet and outlet passages, and an open position spaced apart from the valve seat to permit flow between the inlet and outlet passages;
an actuator assembled with the valve body and connected with the valve element for axial movement of the valve element between the closed and open positions;
wherein a ratio of a maximum seat annulus flow coefficient associated with the valve seat and valve element to an orifice flow coefficient associated with the fixed orifice restriction is between 2:1 and 8:1; and
wherein the fixed orifice restriction is integrally formed with the valve body.