Excluding Pressure Shock from Directional Valves
Directional valves are important components in hydraulic and pneumatic systems. As the name suggests, these valves are capable of changing the direction of a fluid, allowing for it to be supplied to different sections of the system. Pressure shock, however, is one common issue associated with the use of directional valves and can reduce system performance, leading to costly repairs and downtime, unless steps are taken to prevent and control it.
The main cause of pressure shock is improper installation and settings of the directional valve that result in incorrect operation. When the valve opens or closes suddenly, or with too much force, the sudden change in the flow can generate a pressure surge in the system. This pressure spike is then transferred throughout the system and can cause unnecessary wear on components and damage to other system components such as actuators, pumps and filters.
To reduce the risk of pressure shock, there are several steps that must be taken. The first is to check the installation and settings of the directional valve. The valve should be installed in the correct position, with the correct pressure and flow settings. All piping should be secured properly and inspected for leaks, and adjustments should be made if necessary. The settings should also be tested to ensure the valve is operating correctly and not over-pressurising the system.
Second, the valve should be inspected periodically to check for wear or damage. Over time, the valve can become weaker, leading to more frequent pressure shocks. If wear is noticed, it is important to replace the valve as soon as possible to avoid costly repairs and downtime.
Third, other components in the system should be regularly inspected as well. Filters, actuators and pumps should be checked for any signs of wear, corrosion or damage that can indicate a pressure shock related problem. Any damaged components should be replaced in order to avoid further issues such as cavitation or higher system operating pressures.
Finally, a pressure relief valve should be installed on the system in order to regulate fluid pressure. If the pressure reaches a certain level, the relief valve can be used to reduce the pressure and prevent further damage from occurring.
In conclusion, pressure shock is a common issue associated with directional valves. To minimise the risk of pressure shock occurring, it is important to ensure that the valve is properly installed and set to the appropriate values. Other components should also be regularly inspected and replaced as necessary. And finally, a pressure relief valve should be installed to ensure that excess pressure is relieved if needed. By following these steps, pressure shock can be effectively managed, thus minimising costly repairs and downtime.
