Understanding the Function of the Dump Truck Limit Valve
The limit valve in a dump truck plays a crucial role in controlling the lifting mechanism. It works by cutting off the air supply to the multi-function distribution valve, which in turn stops the hydraulic cylinder from receiving oil. This mechanism ensures that the truck bed does not exceed its safe lifting range.
What Happens When the Limit Valve Fails?
If the limit valve malfunctions, it loses the ability to cut off oil supply to the hydraulic cylinder. As a result, the cylinder will continue to lift without restriction. Since the gear pump keeps supplying oil to the hydraulic system, excessive pressure buildup can occur. In extreme cases, this may lead to hydraulic cylinder failure or even bursting if the pressure exceeds safe operating limits.
The Importance of the Limit Valve
To prevent such issues, dump truck manufacturers typically incorporate a hard limit stop at the rear of the main frame. However, drivers should never rely solely on this mechanical safeguard. Ignoring the limit valve’s function in an attempt to achieve a greater dumping angle can significantly increase the risk of hydraulic system failure.
To ensure safe and efficient dump truck operation, it’s essential to regularly inspect the limit valve and address any faults immediately. Proper maintenance helps prevent equipment damage, costly repairs, and potential safety hazards on the job site.
High-Quality Dump Truck Limit Valves – Durable & Reliable
Our company manufactures dump truck limit valves with a simple structure, strong compatibility, and excellent interchangeability. These valves are designed for smooth, reliable operation and have an extended service life.
For detailed installation guides, working principles, and technical drawings, feel free to contact our factory. We are happy to provide professional consultation and support for all your hydraulic system needs!
It is recommended to use various types of hydraulic cylinders, Dump truck Hydraulic System, and Dump Truck Pneumatic Reversing Lift Valve of our company
