Abstract: A valve arrangement regulates a pressure in a hydraulic fluid flow in a valve device in response to an actuating force during an active control operation and mechanically regulates the pressure during a fail-safe operation when no actuating force is present. The valve arrangement comprises a first spring member adapted to be arranged in a valve chamber of the valve device to interact with a valve seat to provide a first restriction by which the hydraulic fluid flow is restricted during active control operation, and a second spring member adapted to be arranged in the valve chamber to provide a second restriction by which the hydraulic fluid flow is restricted during fail-safe operation. During active control operation, an active control flow channel is open. During fail-safe operation, the active control flow channel is substantially closed by means of the first spring member.

Abstract: A valve arrangement and a method for controlling a pilot pressure in the valve arrangement for a shock absorber, wherein the valve arrangement comprises a control valve member movable in an axial direction relative a main valve member, a pilot chamber being in fluid communication with a first port and/or a second port. The arrangement and method comprise, during an active control mode, pressure relieving (AM S1) the control valve member and applying an actuating force (AM S2) for controlling the pilot pressure (Pp). Further, during a failsafe control mode, controlling (FM S1) the control valve member by means of the pilot pressure (PP). And finally, during both the active control mode and the failsafe control mode restricting (S3) the pilot fluid flow (PFC, PFR) by at least one common valve seat (R2).

Abstract: A valve arrangement and a method for controlling a pilot pressure in the valve arrangement for a shock absorber, wherein the valve arrangement comprises a control valve member movable in an axial direction relative a main valve member, a pilot chamber being in fluid communication with a first port and/or a second port. The arrangement and method comprise, during an active control mode, pressure relieving (AM S1) the control valve member and applying an actuating force (AM S2) for controlling the pilot pressure (Pp). Further, during a failsafe control mode, controlling (FM S1) the control valve member by means of the pilot pressure (PP). And finally, during both the active control mode and the failsafe control mode restricting (S3) the pilot fluid flow (PFC, PFR) by at least one common valve seat (R2).