7 Elements You Should Know Prior To Picking Right Directional Control Valves

· Directional Valve

Directional control valves start, stop or alter the course of the stream in compacted air applications. They are perhaps the most central parts in pressure driven hardware too and pneumatic apparatus. They permit liquid streams in various ways from at least one source. They for the most part comprise a spool inside a chamber that is precisely or electrically controlled. The development of the spool limits or allows the stream, in this manner it controls the liquid stream. Numerous makers apply compacted air as the ability to work devices and hardware which are utilized to make the items they offer. To comprehend the various utilizations of compacted air and how valves are utilized, one should initially have information on the sorts and kinds of valves utilized by enterprises.

Types of Pneumatic Directional Control Valves 

When pick a pneumatic directional control valve, beneath factors should be thought of:

• Working climate

• Acting sort (3/2 way, 5/2 way, 5/3 way)

• Working pressing factor • Working temperature

• Fluid sort ( air, water, oil, and so forth)

• Size (string size)

• Approvals required (for instance: Department of Transportation, Underwriters Laboratory, FDA)

Smaller than expected pilot valves 

Smaller than expected pilot valves are perhaps the most principal parts in water powered hardware too and pneumatic apparatus. They permit liquid streams in various ways from at least one source. It has a miniature size, yet it's peaceful when it works.


1. Liquid sort: separated air

2. Working pressing factor: 0-7 bar

3. Acting sort: 3/2 N.C.; 3/2 N.O.; 2/2 N.C.

4. Working pressing factor: - 10-80 ℃

5. Line size: M5

6. Favorable position: more modest volum, low force, wide application, snappy reaction, long life.

7. Inconvenience: The greatest hole is 1mm, and the stream rate is 100L/min, possibly it's restricted in certain territories.


At the point when you pick smaller than normal pilot valves, you need to affirm the acting sort and stream rate. To suit distinctive climate utilizing, there are three wiring plan, Vertical type(L), Horizontal type(M) and Direct line type(G). Manifolds are accessible for some valves together. Normally they can be utilized for oxygen make framework, inkjet printer framework, attachment machine, and so on.

Directional Solenoid Control Valves 

Directional solenoid control valves are regular in pneumatic frameworks to control liquid heading inside a pneumatic circuit. They are controlled by the activity of the solenoid and commonly control the compacted air to chambers, revolving actuators, grippers, and different components in bundling, dealing with, gathering, and innumerable different applications. The four principle capacities for directional-control valves are 2/2 (two-port, two-way), 3/2, 5/2, and 5/3.


1. Liquid: Compressed air

2. Working pressing factor: 1.5-8 bar

3. Acting sort: 2/2 way, 3/2 way, 5/2 way, 5/3 way

4. Joint size: M5, 1/8″, 1/4″, 3/8″, 1/2″

5. Favorable position: Compressed air can bring about gigantic powers accessible to follow up on another valve and be reused after its managed its work, so it doesn't add a lot of weight to the component.


When picking the directional solenoid valve, the activity needed by your application will decide the kind of valve required. What amount of stream do you need at the yield port of the valve? It is essential to realize the necessary stream pace of your application to accurately estimate a directional control valve. In the event that the valve is too huge for the application, you will squander air and cash. In the event that it's too little, the actuator won't work as expected.

Directional Pneumatic Control Valves 

Directional pneumatic control valve controls at a foreordained pressing factor setting, the exchanging pressure is by and large a variable set on the actual valve. An adjustment in the situation of the directional pneumatic control valve (for example open or shut) happens either step by step (by control) or abruptly (by switch). Directional pneumatic control valves can be partitioned into control and exchanging tasks.


1. Liquid sort: compacted air

2. Working pressing factor: 1.5-8 bar

3. Acting sort: 2/2 way, 3/2 way, 5/2 way, 5/3 way

4. Line size: 1/8″, 1/4″, 3/8″, 1/2″

5. Preferred position: The valve being stumbled using packed air (gas). At a specific point in a mechanical or assembling measure, packed air is delivered, making a valve open or close.


At the point when you pick a directional pneumatic control valve, you should realize the actuator style in your applications. The working pressing factor additionally is a key factor, extraordinarily influences stream rate, it is imperative to survey the presentation information introduced by the maker to guarantee that a valve will proceed as needed in your application.

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