Check valve assembly

A shock absorber comprising a working cylinder adapted to receive a working fluid, a piston dividing said cylinder into a first and a second working chamber and a check valve assembly comprising

• a housing, said housing comprising
• a first volume, wherein a first pressure prevails;
• a second volume, wherein a second pressure prevails;
• a fluid passage between said first volume and said second volume;
• and
• a spool movably arranged in said housing for movement back and forth between a first position, in which a flow of fluid through said fluid passage is allowed, and a second position, in which the spool closes the fluid passage,
• wherein the check valve assembly further comprises
• a first biasing means configured to bias the spool towards the second position through at least first operational range of the spool in which first operational range the fluid passage is open and
• a second biasing means configured to bias the spool towards the first position partly through a second operational range of the spool in which second operational range the fluid passage is closed.

A front fork comprising a check valve assembly for a shock absorber, said check valve assembly comprising:

• a housing, said housing comprising
• a first volume, wherein a first pressure prevails;
• a second volume, wherein a second pressure prevails;
• a fluid passage between said first volume and said second volume;
• and
• a spool movably arranged in said housing for movement back and forth between a first position, in which a flow of fluid through said fluid passage is allowed, and a second position, in which the spool closes the fluid passage,
• wherein the check valve assembly further comprises:
• a first biasing means configured to bias the spool towards the second position through at least first operational range of the spool in which first operational range the fluid passage is open, and
• a second biasing means configured to bias the spool towards the first position partly through a second operational range of the spool in which second operational range the fluid passage is closed.