Just imagine your Pneumatic system suddenly starts giving much better performance!! It is possible very easily. You might not know this but poor quality valves can be the reason for the poor performance of your system. A valve works by handling the movement of actuators, cylinders, and different components. It gives precision and control to the system by controlling the air flow. Directional control valve is a cheap and effective way to increase the performance of your pneumatic and hydraulic systems. To find a valve which perfectly suits your system and works well with it read this article completely. Visit VSpneumatics to find Directional control valve perfect for your system
What and how Directional control valves work?
Directional control valves are a kind of valve which works on directing and stopping the flow of fluid(Oil, water, and air) inside pneumatic systems. They redirect fluid output precisely to increase efficiency of the system. If fluid is needed to specific parts then this valve can direct the fluid to that part. This helps with lubrication of the system. By controlling the fluid pressure these valves also ensure that the machine will keep functioning smoothly and prevent any kind of damage to the system. In Pneumatic systems DCVs control the flow of compressed air to special components of the system, this affects the motion of actuator and pneumatic cylinder. Performance of your system will directly depend on the type and fitting of valve you have chosen also on How operative it is for your system.
Major components of a DCV:
- Valve body is the main structure of a directional control valve. Its should be durable as valve have to face strong pressure
- Spool/valve works on controlling the fluid and air flow.
- Actuator is the base component; its main work is to move the spool which directs flow.
Types of Directional control valves:
These valves come in different fitting and are suitable for specific applications. Commonly used valves are two way, three way, and four way valves. Other valves are 5/2 and 5/3 valves which are used for specific functions. Their functionality and application will be discussed in this article:
- Two way valves – These are most useful valves with a simple structure of only two ports one for fluid to enter and one for fluid to exit. They have two functions, normally closed and normally open. NC blocks the fluid by default and then lets it go when it’s actuated. NO’s functions are completely different; it blocks the flow when actuated. Two way directional control valves are applied with simple waft control.
- Three way directional control valves – These valves have three ports unlike two way valves and their functions are more complicated. One port is for entry, one for output and the additional port is used for exhaust. Just like two way valves these can also be used as typically closed or open. It also worked for directional flow control in the valve directs flow through waft from input to output. Three way directional valves are generally used in packaging where air needs to be alternatively changed.
- Four way valves – These valves are quite versatile and prominently used DCV in the pneumatic systems. They have 4 or 5 ports and control the flow of air in double acting pneumatic cylinders. They can be used in two ways
- Two position 4 way valve- In this position air flow comes in with one port and connected with actuator while returning air gets connected from other actuator to exit port.
- Three position 4 way valve- In this position all ports either may be blocked or linked to the exhaust.
- 5/2 and 5/3 valves – These are two types of valves which both have 5 ports and 2 or 3 positions. These valves are used in complex structures which require efficient and smooth operations with a continuous working need. In structures like computerised conveyors which require a couple of actions together these valves are preferred.
How to select the right valve for your needs?
Before selecting a valve, always check its compatibility with your system and working needs. Choosing an appropriate valve for your needs directly shows its effect on your system performance. Optimise your system with right Valve after learning your requirements:
- Flow rate: Each system requires a different flow rate for different applications. Match your system’s need of flow with the valve’s flow capacity.
- Pressure handling: Making your valve work on higher pressure then it is rated can increase the risk of an accident happening.
- Number of ports: Analyse your system’s circuit and then finalise the number of ports you might be needing in your valves.
- Application: If you have to work on higher pressure rugged valves are suggested. While some industrial requirements require precision and smooth operation which is better done by valves with more ports.
Always check a valve’s CV rating. Better CV rating gives you better performance.
Where can you find high quality valves?
Directional control valve is a commonly used product in multiple machinery but it is not an easy component which you can buy from anywhere. It is suggested to buy them from a reliable online manufacturer or dealer. Always go for popular names in Industry like mercury Pneumatic or VSpneumatic.
- Online: You can easily find anything online in present times. Reliability of online stores is a bit doubtful unless they are popular names like VSpneumatics. Biggest positive of online stores is they have a wide range of options and almost all the products in one place. With free deliveries and other services offered on online portals.
- Direct sales: They offer expert advice but they have limited options available.
- VSpneumatic – Here at VS we have both offline and online ways to provide you with the best of pneumatic solutions for all your pneumatic needs. Our online store at VSpneumatic shows you all the range of products we offer to help your pneumatic system work much better.
How should you maintain your valves to increase their longevity?
You must have used valves to increase efficiency of your work but it is also suggested you maintain them properly so they can serve you longer without breaking down. By following these steps you can maintain your valves:
Regular inspections
- Check for any leak regularly. If found any leaks in the systems prevent it.
- Check for rust or corrosion in each and every component. Also remove it or exchange the component before it affects your system or causes anything unfortunate.
- Clean solenoid valves to prevent any kind of clogging of the system.
Proper filtration and lubrication
- Filter the air properly so that valves don’t get clogged with the contamination. Clogged valves can lead to overheating and declination of airflow.
- Use the correct lubricators suggested for your system. Lubrication will let all your components work effectively.
Conclusion
Pneumatic system is the base of many important industries. With their sustainability and less function cost they are more preferred by the heavy industries. Your valves are the basic components of your pneumatic systems which directly affects your system’s performance. Optimise your pneumatic system with the right valve per your flow rate requirement, pressure capacity and applications. Valves also need maintenance so always have durable valves from reliable sources. Learn about your valve requirements specification in more detail at VS pneumatics.
