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What is the difference between normally open solenoid valve and normally closed solenoid valve? What is a BURKERT solenoid valve?

2023-09-23 09:52:41

BURKERTBaldor solenoid valve(also known as a solenoid valve) is a valve controlled by an electric current. They consist of two main parts - the valve body and the solenoid (coil). Solenoids consist of wound copper wire that surrounds a core with a movable closing plunger. The coil's job is to generate a magnetic field through the passing current, which then moves the piston and opens or closes the valve. Therefore, the solenoid valve uses current to convert into linear motion.


Solenoid valves have many uses. Suitable for liquid and gaseous media - for closing, opening, metering, dispensing or mixing in distribution systems. Classic applications include heating systems, irrigation, dishwashers and washing machines, refrigeration and air conditioning systems, medicine, dentistry, industrial cleaning and water tanks.



Solenoid valves use common two-way or more complex three-way and multi-way structures for flow switching and mixing. In most cases, the body is made of brass, stainless steel, aluminum or even plastic. Always check that the material is suitable for the intended use and compatible with the medium before purchasing.



The two main categories of solenoids are NO and NC - normally open and normally closed. When a current is applied to the coil, a magnetic field is created whose strength depends on the current, the number of windings of the wire, and the material that moves the iron core (also known as the piston). The magnetic field moves the plunger, closing or opening the valve. In the absence of power, the valve can be closed or opened.



For normally closed valves, when energized, the plunger will be pulled up by the magnetic field. The valve is therefore opened to allow the medium to flow. The magnetic force lifts the plunger against the spring, which in turn pushes it down. When the power supply is interrupted, the magnetic field disappears and the plunger spring compresses it back to its original position. So the valve closes. For safety reasons, this is a variant that is used more widely in the event of a power failure.



Normally open valves allow the medium to flow without power. The plunger is always pulled out and the medium can flow through the valve. However, when energized, the magnetic field pushes down on the plunger and closes the valve. This variant is primarily used in applications that keep valves open longer and more energy efficient.



Valve design

The valve consists of a body and a coil mounted on it. The inlet and outlet are fitted with connectors so that they can be connected to the pipe. Inside the valve body we can find rings, springs, plungers and seals or diaphragms.



What is the difference between normally open solenoid valve and normally closed solenoid valve? What is a BURKERT solenoid valve? The problem. In addition, Shenzhen Oudejie Technology professional sales of new original imported BURKERT Baode solenoid valve, and promised to sell products are new original imported, while providing our customers with quotation, selection, product information and other services.

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