Abstract: A two-stage fluid pressure regulating valve has a solenoid operated lever for moving a regulator shaft between two positions. The regulator shaft biases the regulator spring of a flow rate control diaphragm valve. When the solenoid is actuated the lever is pivoted, applying increased force to the regulator spring, to change the valve set point to its higher pressure output. A return spring returns the arm to the low pressure set point when the solenoid is de-energized. A pair of adjustable stops are positioned for engagement by the lever and forming limits for its motion, for independently adjusting the low and high pressure set points for the valve.