I am having a problem throwing open a solenoid valve with 5 volts DC. The valve requires 5V DC, and it seems that I am getting a response from an LED on the valve, but the valve will not open. When I attach the valve to a 5V battery, the valve has no problem, and the LED has a stronger intensity to it. I am using Visual Basic to program the valve switching event with a 6024E card and CB-68LP board. Also, would it matter if this were a pulsed DC voltage as opposed to a constant DC voltage?