What is a solenoid?
A solenoid is an electric coil with a movable ferromagnetic core, which converts electric current to linear motion.
Solenoid valve
This solenoid valve consists of a Kohsel solenoid and a valve body (G). The figure below shows the different components in the solenoid valve. A solenoid has an electromagnetically inductive coil (A) around an iron core at the center called the plunger (E). At rest, the plunger can be normally open (NO) or normally closed (NC).
In the de-energized state, a normally open valve is open, and a normally closed valve is closed. When current flows through the solenoid, the coil is energised and creates a magnetic field. This creates a magnetic attraction with the plunger, moving it and overcoming the spring (D) force.
If the valve is normally closed, the plunger is lifted so that the seal (F) opens the orifice and allows flow through the valve. If the valve is normally open, the plunger moves downward so that the seal (F) blocks the orifice and stops flow through the valve.
The shading ring (C) prevents vibration and humming in AC coils.
Kohsel solenoids are used to control the flow of liquids and gases.
Solenoid valve
This solenoid valve consists of a Kohsel solenoid and a valve body (G). The figure below shows the different components in the solenoid valve. A solenoid has an electromagnetically inductive coil (A) around an iron core at the center called the plunger (E). At rest, the plunger can be normally open (NO) or normally closed (NC).
In the de-energized state, a normally open valve is open, and a normally closed valve is closed. When current flows through the solenoid, the coil is energised and creates a magnetic field. This creates a magnetic attraction with the plunger, moving it and overcoming the spring (D) force.
If the valve is normally closed, the plunger is lifted so that the seal (F) opens the orifice and allows flow through the valve. If the valve is normally open, the plunger moves downward so that the seal (F) blocks the orifice and stops flow through the valve.
The shading ring (C) prevents vibration and humming in AC coils.
Kohsel solenoids are used to control the flow of liquids and gases.
We are all about optimisation
At Kohsel, we combine technology, supply chain management and manufacturing knowhow in solutions that reduce cost at every step of your value chain and optimise performance through innovative and reliable technology. It’s this ability to optimise and reduce the total cost of ownership for our customers that sets us apart.
Some of our products
Gas stove
Solenoid coil for valve used to control the flow of gas in a stove.
Refrigerated counter
Solenoid coil for valve used to control the flow of liquid in a refrigerator
Excavator
Solenoid coil for electrohydraulic valve, used to control the flow of hydraulic fluid in an excavator.
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External reactors, chokes and filters
Line reactors
Reduce low frequency interference (harmonics) and relieve the strain on the grid network by compensating for the distortion reactive power induced.
Harmonic filters
Reduce current harmonics (THDi) to comply with the limit values required under the standards. This protects the connected grid network from circuit feedback and increases the system immunity from interference. Our LCL filters are specially designed to reduce harmonics of current absorbed by the rectifiers in the input converter.
Motor chokes
Reduce the voltage rise and the voltage spikes between the conductors which become more pronounced as cable length increases.
dV/dt filters
Protect motors against high voltage increases and voltage peaks at the motor terminal.
Sinus filters
Effectively protect the motor insulation and reduce supplementary losses and noise emissions from the motor. All-pole sine filters also enable the use of unshielded motor lines.
Encapsulation.
Kohsel ensures high quality through a constant focus on safety, cutting-edge production methods and training. Final control focuses especially on the critical tolerances that are important for the customer.
Our certificates
Kohsel is committed to providing customers with the highest-quality products, but also aspires to the highest standards of social responsibility and ethical conduct. Our core values support a strong commitment to economic, environmental and socially sustainable development.
At Kohsel, we make conscious choices every day. For us, it’s not about being the best – it’s about trying our best. We work continuously to improve our operations and develop our company in a sustainable direction.