Disclosed is a gradient proportioning valve for liquid chromatography that includes a plurality of inlet ports configured to receive a plurality of fluids, a manifold connected to each of the plurality of inlet ports configured to mix the plurality of fluids in a controlled manner to provide a fluid composition, the manifold including a plurality of fluid conduits internal to the manifold, each of the plurality of fluid conduits receiving fluid through a respective one of the plurality of inlet ports, each of the plurality of fluid conduits operatively communicable to a respective actuation mechanism configured to open and close each of the plurality of fluid conduits in a controlled manner, a common outlet port configured to receive the fluid composition, and a passive fluidic dampening system configured to dampen unwanted fluidic pressure pulses in the manifold where at least one of the plurality of fluid conduits is compliant.