Abstract: A valve assembly includes a check valve element in the output chamber. The check valve element opens to permit forward flow of fluid under pressure in the output chamber from a source toward a load. The check valve element closes to block back flow of fluid under pressure in the output chamber from the load toward the source. The back flow of fluid under pressure exerts a closing force upon the check valve element from within the output chamber. A counter force generating element is located within the output chamber and coupled to the valve element. The counter force generating element applies a counter force to the check valve element, which urges the valve element toward the opened condition. The counter force is, by purpose, less than the closing force, so the check valve element remains closed.