Proportional solenoids and proportional solenoid valves are often used in applications requiring variable and precise control. By converting an electric control signal into proportional mechanical force, proportional solenoids are able to achieve varying position and/or force. During operation, spring force balances solenoid force to position the armature in proportion to the input signal. As current is applied, the force of the armature against the force of the spring holds the solenoid in a set position until the applied current is increased or decreased.
This example of a continuously variable pressure reducing relieving valve can be designed to operate over various pressure ranges to optimize controllability.
This proportional solenoid actuator (used to power proportional hydraulic valves in off-highway applications) is direct-acting and continuously variable.
This example of a pulse width modulated, proportional flow control solenoid valve is used in a vehicle's emission control system.
This proportional solenoid valve is a direct-acting, normally open, continuously variable pressure relief valve.
This direct-acting, normally open, proportional pressure relief valve can be designed to operate over various pressure ranges.
This pneumatic control valve was designed to meter inlet and outlet pressure to proportionally control an actuator.
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