A fluid control device comprising: a valve body defining a flow path for a fluid; a valve seat disposed in the valve body along the flow path ; an actuator casing connected to the valve body ; a control member disposed in the valve body and movable between an open position in which the control member is spaced apart from the valve seat and a closed position in which a top surface of the control member engages the valve seat ; a biasing member disposed in the actuator casing and configured to bias the control member to the closed position or the open position; a valve stem connected between the biasing member and the valve seat and aligned with a longitudinal axis; a connection member mounted around the valve stem and engaging a bottom surface of the control member to fixedly connect the control member to the valve stem; a through-bore extending between the bottom surface and the top surface of the control member and aligned with the longitudinal axis, the through-bore receiving the valve stem ; a first counter-bore formed in the bottom surface of the control member and aligned with the longitudinal axis, the first counter-bore receiving the connection member ; a thickness of the connection member being less than or equal to a depth of the first counter-bore such that the connection member does not protrude from the first counter-bore ; the connection member having a first diameter, the first counter-bore having a second diameter, wherein the second diameter is greater than first diameter; the through-bore having a third diameter that is less than the first diameter and the second diameter; and wherein the bottom surface of the control member includes a second counter-bore aligned with the longitudinal axis, the second counter-bore having a fourth diameter that is greater than the second diameter. a valve body defining a flow path for a fluid; a valve seat disposed in the valve body along the flow path ; an actuator casing connected to the valve body ; a control member disposed in the valve body and movable between an open position in which the control member is spaced apart from the valve seat and a closed position in which a top surface of the control member engages the valve seat ; a biasing member disposed in the actuator casing and configured to bias the control member to the closed position or the open position; a valve stem connected between the biasing member and the valve seat and aligned with a longitudinal axis; a connection member mounted around the valve stem and engaging a bottom surface of the control member to fixedly connect the control member to the valve stem; a through-bore extending between the bottom surface and the top surface of the control member and aligned with the longitudinal axis, the through-bore receiving the valve stem ; a first counter-bore formed in the bottom surface of the control member and aligned with the longitudinal axis, the first counter-bore receiving the connection member ; a thickness of the connection member being less than or equal to a depth of the first counter-bore such that the connection member does not protrude from the first counter-bore ; the connection member having a first diameter, the first counter-bore having a second diameter, wherein the second diameter is greater than first diameter; the through-bore having a third diameter that is less than the first diameter and the second diameter; and wherein the bottom surface of the control member includes a second counter-bore aligned with the longitudinal axis, the second counter-bore having a fourth diameter that is greater than the second diameter. <EOS>