ProControl® proportional solenoid valves achieve excellent variable output flow from corresponding variable input current (amperage). Superior analog performance. Utilizing a frictionless, flat-spring armature design, ProControl® valves provide outstanding control, long life and value from a simple, compact 2-port construction. Inline or manifold mount types available. Standard set pressures of 25, 50 and 100 psi, or contact us and optimize performance to your application parameters.