Solenoid valves, such as those produced by the Norgren valves company, are devices that are electromechanically operated via the utilisation of a solenoid, to alter the state of any valve between being opened and closed for the control of the flow of gas or liquid. They are categorised into four groups. This article offers four typical categories for your reference.

1. Two-way valve

This comprises a two-port way that’s alternatively utilised to permit inflow and shut off. A two-way valve can be classified to be typically open or closed in its operation. The valve is quite versatile and could be deployed in a truly wide range of varying applications in several industries to basically switch flow either on or off and with a usually open valve it stays open till current is applied to close it.

 2. 2/2 direct-acting or direct-operating valve

Solenoid valves feature the simplest working principle. In direct acting valves, when the valve gets opened, the coil acts in direct action, magnetically. This lifts the valve’s shaft and seat without relying on any external pressure. It basically means that by getting the solenoid coil energised, there’s a direct impact on the valve’s position. One among the basic functions of a direct-acting valve happens to be that it’s always totally operational without the need to have any kind of pressure within the line. In fact, this is among the foremost reasons why you always see users seeking this type of valve from Norgren valves distributors.

3. 2/2 semi-direct operating valve

This valve blends the properties of indirect and direct valves. The combination enables the valve to work from even a zero bar yet still handle high flow rates. It appears somewhat like an indirect valve and also features a membrane that’s moveable. When its plunger gets lifted, it directly lifts the valve’s membrane to get it opened. Simultaneously, a second opening which features a slightly larger diameter is opened by the plunger. This makes the pressure inside the chamber atop the membrane drop. Consequently, the membrane gets lifted out by not just the plunger, but the pressure difference too. The combination ends in a valve that functions from a zero bar and could control flow rates that are relatively low. Frequently, these valves feature coils that are more powerful than indirect operating valves. These valves are called assisted-lift solenoid valves sometimes.

4. Pilot or indirect-operated valve

This acts as a pilot to help with the operation of valves. When their plunger opens the pilot opening, the pressure that’s been built-up makes the valve open or close. Indirect valves have to maintain full power to stay in the open state, and function at a slower rate. Pilot-operated valves require full power only when opening valves, as they are capable of holding their ‘open’ position even when functioning on low power. The major feature of this type of valve is that it demands less electrical energy to function.

When it comes to solenoid valves like the ones offered by Norgren valves, there are several other types like three-way, four-way, and even five-way valves. But these are the major types you can easily get in the foremost valve markets. Read more: https://www.midwestvalves.com.au/