Effect Of Directional Valves On Oil Flow In Hydraulic System

Directional valves are key components of the hydraulic system. Anytime a directional valve is measured for an application, it should be strong enough to hold the volume of oil which will be enough to operate the hydraulic motor or cylinder.

Also, applications that need below 10 to 15 gallons per minute of oil flow will require a direct solenoid-operated valve to be used.

During the application, for you to move the valve spool, you need to apply current to the valve coil.  Doing this will generate magnetism in the coil which will pull in the plunger.

Then as the process is ongoing the plunger will act on a pushpin that moves the valve spool, and around 30 pounds of force will be acquired by the solenoid to move the spool.

Additionally, when the spool is dragged, the oil will be carried along with the valve and to the hydraulic motor or cylinder.

However, to know how the directional valve affects oil flow in a hydraulic system purchasing a directional valve from an experienced and reputable directional valves manufacturer is the best and recommended option for your operations.

Two-stage Valves

Two-stage valves will be used on systems where extreme flow rates are needed.  One of the valves made by directional valves manufacturer is the pilot valve which is on top and the pilot valve is to guide pilot pressure to move the core spool.

Furthermore, the two-stage valves are bigger in size compared to direct operated valves, additional force is required to move the core spool.

However, hydraulic pressure is used to move the core spool in place of using huge solenoids which requires high current to perform.

Most importantly, springs are provided on each edge of the core spool to grip it whenever the pilot valve is not moved.

The springs as manufactured by directional valves manufacturer are always evaluated between 50 to 115 pounds per square inch. Anytime the core spool is on the pilot valve in the center position, other spools are blocked.

Furthermore, two-stage valves can either be internally or externally piloted. Most presses and mobile equipment hire different pumps to supply the pilot fluid. In other cases, oil is driven downstream of the pump by a pressure reducing valve.

Also, by employing a different pump or pressure reducing valve, a down pressure will be used to move the core spool and this will not allow the spool to be damaged compared to using higher system pressure to move the valve.

When the core spool is moved and you put current to the pilot valve coil, magnetism in the coil gives the pilot spool the chance to move to the right.

The directional valves manufacturer built the pilot fluid to flow along with the pilot valve to the pilot cavity on the right side of the core spool.

Immediately the pilot pressure grows up to a huge level to overpower the spring acting on the opposite side the core spool will move to the left.

After it is moved to left, the system volume at the port of the core spool needs to flow along with other ports and to the actuator.

The oil that consumes out of the actuator flows into other ports inside the valve. The oil at this level flow out of the last port and return to the reservoir.

Conclusion

Directional valves as a lot of effect on the hydraulic system and it is what is made up of the hydraulic system.

A directional valve as produced by Directional Valves Manufacturer is used to hold the oil that will be enough to operate a cylinder or hydraulic motor.

Before the directional valve will work or hold the oil, it has to pass through the spool and other valves such as the two-stage valve and pilot valve, and others.

When you need knowledge of how oil flows through the valves and how directional valve works, it is important to purchase from a reputable and reliable directional valves manufacturer to gain adequate knowledge.