All you have to know about solenoid valves

How Does a Solenoid Work?

The industrial revolution has modernised society and improvedthe lives of people. In addition, it has enhanced the efficiencies at work.Industrial development goes hand-in-hand with technology and provides advancedequipment and tools to help you handle complex conditions in variousindustries. One such advancement is the introduction of the solenoid valvesused in multiple industrial applications to control or regulate the temperatureof the gases and liquid, the flow capacity, and pressure. The solenoid valve comprises a valve anda solenoid or electromagnetic actuator. If you are new to the“solenoid” term, this article will help you understand everythingabout solenoid valves.

What are solenoid valves?

Before learning aboutsolenoid valves, you must first understand “solenoid.” A solenoidconsists of a wire coiled around a core, comprising a stationary and movable(armature) part. The current passes through the wire to create a magnetic fieldthat allows the movable part or the armature to be taken away or towards thestationary core. Well, it entirely depends upon the usage and construction ofthe solenoid valves. Solenoid valves utilise the working principle of thesolenoid to regulate or control the flow of gas or liquid passing through it.The solenoid valves consist of an actuator, which is arranged in a way theplunger action can either close or open. Solenoid converts electric currentinto linear motion, resulting in pull and push actions.

What are the types of solenoid valves?

Solenoid valves can befound in online stores in a variety of types. So, if you don’t know which tochoose, you can look at some of the following types.

  1. Direct-acting valves: The direct-acting valves work on an uncomplicated principle. For instance, in a closed valve, the spring begins pushing on the plunger after the de-energisation of the solenoid. The valve’s orifice is closed, resting on the seal. As soon as you turn on the power, the plunger is pulled, and the solenoid opens up. It is entirely the opposite for an open valve. These valves are utilised for smaller flows that don’t require high pressure.
  2. Two-way valves: The two-way valves consist of two ports that alternatively allow and close the liquid or gas flow. So, essentially, the operation of the valves is specified as “normally close” or “normally open.” When it comes to the normally open valve, the current is passed and permits the open valve to close. The normally closed valve only opens if an electrical power source is passed through it.
  3. Three-way valves: Three-way valves have three ports and can be switched between two or a mix of two circuits. Some three-way valves can manage both functions when necessary.

What are the components used in the solenoidvalves?

Solenoid valvesconsist of various components or parts such as the valve body, the coil,plunger, etc. To learn more about them, keep reading this article.

  1. Coil: Coil is one of the prime parts comprising of insulated copper wires firmly wound around a core tube.
  2. Plunger: A plunger is a solid cylindrical metallic part positioned in the valve’s hollow portion. The magnetic field is generated after the current is passed through the valve and the plunger moves vertically. The electric current and magnetic field must be stopped to get it back to the existing place.
  3. Disc: If the solenoid valve is closed, the disc stops the flow of liquid or fluid. In fewer designs of the solenoid valves, pinch or bellow devices and diaphragms are utilised to block the flow. Generally, the disc is created from erosion and corrosion-resistant materials like stainless steel or PTFE.

Wrapping it up: Solenoid valves are used in food,pharmaceutical, medical and other industries. They are compatible with AC andDC voltage and consume less power. Moreover, they provide a high level ofreliability, safe switching, and considerable life service.

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