Solenoid Operated Valves

Curtiss-Wright's range of Solenoid Operated Valves come from the Target Rock and Valve Group Korea product brands. We are a leading supplier of top quality critical service valves for the engineering and nuclear safety markets and are also well known for designing, manufacturing, and supplying control valves to the power, oil, and petrochemical processing markets.

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Target Rock Valve Group - Korea


Solenoid Valves: Mechanism & Functionality

Solenoid Operated Valves are valves operated electro-mechanically. The solenoid component is a type of electromagnet, comprised of an insulated copper wire coil, which channels an electric current through it in order to control the valve. The valve itself is designed to control the flow of either liquid or gas and can be typically used in scenarios where safe switching, high reliability, & long service life are important.

Solenoid valves can vary for a number of reasons, from the electric current they use, the strength of the magnetic field that they can generate, how they regulate fluid/gas, and the type and nature of the substance they control.
They also use a variety of mechanical actions, from linear, plunger-type actuators like our range, to rocker actuators and a sliding action. Solenoid valves use a two-port design to regulate flow or use a three or more port design to switch flows between ports and it's Multiple solenoid valves can be placed together on a manifold. Our models are all two-port designs, used either for isolation or control purposes.

Solenoid Valves have a number of benefits:

fast and safe switching
high reliability
long service life
good medium compatibility
low control power 
compact design.

Application and usage.

Solenoid Valves are used extensively, in a huge number of devices and device types, and a range of industries. This includes devices that use hydraulics, pneumatics and locking mechanisms and in industries such as automotive, nuclear, and aviation.


Some examples include:

Oil, gas and petrochemical applications
Light volatiles
Jet fuel

Recommended applications in Nuclear Power plants include:

Emergency feedwater control valve
Pressurizer spray valve
Safety injection control valve
Containment Isolation
Reactor head vent
Power-operated relief valve

Curtiss-Wright's range of Solenoid Valves

Solenoid Operated Valves are typically divided into two categories: pilot operated, and direct operated. They can also operate as an isolation valve which operates on an on/off or open/closed basis, or as a control valve, which can be set to a specified value.

Direct acting solenoid valves

Often used in a smaller gauge, lower pressure environments, direct acting solenoid valves are simple to control and are suitable for a large range of applications and operating environments. The direct action of the seal on either the moving or fixed core requires more power than the pilot-operated alternative. They can, however, operate with little to no pressure and even in a negative pressure or vacuum environment.
Related Products: Model ZEV, Model-IV

Pilot operated solenoid Valve

More suitable for larger pipe sizes where the increased volume doesn't negatively impact the operation of the valve as pressure provided by the medium is 'borrowed' to lif the diaphragm enough to allow media to flow. This also means that the coil doesn't have to do as much work, and requires less power to operate.
Related Products: Model 100-CV