What is a Directional Control Valve?

What is a Directional Control Valve?

If you have at any point run over a pneumatic or water-driven framework in the business, you might have seen directional control valves or spool valves. There is an assortment of notable control valves in the business like Globe Valves.

Be that as it may, the present article is about various sorts of control valves known as Directional Control Valves, or DCVs for short. You might know about them as solenoid valves or spool valves also.

Directional Control Valves versus Adjusting Control Valves

The control valves are generally known for their movability and choking abilities. Yet, directional control valves or DCVs are the sorts that control the “course” of the fluid streaming inside the line.

Directional control valves are utilized both in pneumatic and pressure-driven stream control frameworks. So there are pneumatic directional control valves and water-driven directional control valves. Some of the time the water-driven directional control valves are called spool valves.

Directional Control Valve Application Model

As we’re finding out about the rudiments of the DCVs in this article and there’s very little contrast in their functioning rule and images, we foster our model given a “pneumatic” framework. Also, obviously, on the off chance that you learn one of them you can undoubtedly gain proficiency with the other. We should begin with basic pneumatic hardware. The fundamental force of this pneumatic framework is coming from the compacted air that is provided by a blower.

The directional control valve is coordinating the progression of the packed air in two unique bearings to open and close this slide door valve utilizing its actuator which is a double-acting chamber.

One of the headings extends the chamber and shuts the slide entryway valve to impede the material emerging from the storehouse, and the other bearing withdraws the chamber to its most memorable position. Presently, we should investigate the parts and improve the instrument of the directional control valves.

Directional Control Valve Parts

To start with is the body or lodging of the control valve within which, there are the ways that wind currents through them. There are a few machined openings in the body of the valve that is called Ports. Inside the lodging, there’s a pushing part that drives the air toward various ports of the valve and blocks the others. This moving part is usually alluded to as Spool.

How Directional Control Valve Functions (5/2 Solenoid Valve)

At the point when the spool of the DCV is in its impartial or rest position and the solenoid gets empowered by an order from the PLC card, the loop will push the spool and in this way, it will press the spring on the opposite side.

Accordingly, the cylinder of the chamber withdraws and moves to the right side. However long the PLC’s order stays on the solenoid, the place of the spool will stay still and the compacted air will make the cylinder keep its last position.

When the PLC eliminates the order, the spring will return the spool to its most memorable position and the airway will be changed. In this way, the air behind the cylinder will be cleansed into the climate through the valve exhaust port. Presently, now is the right time to figure out how to name the directional control valves and how to peruse their realistic images.

Step-by-step instructions to Peruse a Directional Control Valve Image

Perusing and deciphering the directional control valve images might appear to be somewhat difficult once in a while. For example, we should think about a 5/2 pneumatic directional control valve image. In each express, a few bolts show the ways that air can move through them in that particular position. We discovered that a 5 by 2 DCV, has 5 ports and this is the ISO assignment of the ports which is a more normal practice.

There is the finishing paperwork for electric Solenoid and Spring Return in the Directional Control Valve schematic. In our circuit, when the valve is in its resting position, the square other than the spring image is dynamic. At the point when the solenoid gets invigorated and the spool changes position, the other square is dynamic. For the most part, the square next to the solenoid sign is dynamic when the solenoid is invigorated and this is a guideline for any directional control valve schematic.


Airmax Pneumatic ltd is the leading 5/3 Way Double Solenoid Valve. We offer various types of industrial valves like pneumatic valves, pneumatic cylinders, diaphragm valves, and many more.

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