Sans inscription -20%
Sans inscription -20%
OUR SERVICES
14 days to
14 days to
to change your mind
Special awards for
Special awards for
professionals
D-day dispatch (24/48H)
D-day dispatch (24/48H)
if I order before 12 noon
A large and comprehensive stock
A large and comprehensive stock
more than 25,000 references

How do I choose a hydraulic spool valve?

Within a hydraulic system, the hydraulic distributor plays a specific role: it directs oil to the various circuits. If you're wondering how to choose a hydraulic distributor, you've come to the right place. This article lists the parameters you need to consider when choosing the right hydraulic distributor for your needs. A few words on how this system works are also given, to help you understand how it operates within a hydraulic circuit.

Things to consider when choosing a hydraulic directional control valve

To ensure that your hydraulic spool valve operates at optimum efficiency, you need to choose it carefully. There are a number of factors to consider, all of them crucial. These include

- Flow rate. The flow through the spool of the hydraulic directional valve will result in pressure losses. When making your purchase, it is also essential to analyse the return flow rates. If the figure exceeds 80 L/min, the spool valve is more likely to be a pilot-operated model.

- The function of the spool valve. This is essential if the cycle is to work properly. If you need your valve to be leak-proof, it is preferable to opt for ball or poppet technology rather than spool technology.

- Working pressure. Thehydraulic directional control valve operates at a pressure that needs to be analysed on all the ports.

- Control. You can choose between three types: electric, manual and hydraulic. Whichever model you choose, your hydraulic spool valve will adapt to your circuit, whether it's open or closed centre.

- Other criteria to consider when choosing a hydraulic spool valve to suit your needs and expectations include operating temperatures and fluid compatibility.

As well as giving you all the keys to choosing the right hydraulic spool valve, we'll also give you some tips on how to adjust your hydraulic spool valve. It may be necessary to adjust it at one time or another. As you will see, there are a number of precise steps to follow, and specific needs to be taken into account.

How does a hydraulic spool valve work?

Having discovered how to choose a hydraulic spool valve, let's take a look at how it works. As mentioned in the introduction, the purpose of the hydraulic directional valve is to direct oil into the circuits. Several holes can be seen on the body of the hydraulic distributor. The inlet and outlet ports are also drilled. A thread is also present. A hydraulic directional valve also has a spool made up of strips and grooves. The bands block the oil, while the grooves allow the oil to pass through the body of the hydraulic distributor and around the spool. If the hydraulic spool valve is open-centre and in the normal position, the oil flows through the spool valve. It then returns to the tank. On the other hand, if the hydraulic distributor is closed on centre and in the normal position, the hydraulic distributor spool blocks the oil. Do you need a hydraulic distributor? You now have all the information you need to make the right choice. By choosing the right hydraulic spool valve, it will be able to carry out its functions efficiently and in line with your needs and expectations.

All our tips and news