Raiso backhoe loader: LR388, LR3CX and LR4CX are all configurated with load sensing valve, what the difference with or without this valve?

Core Difference:

Without a Load Sensing Valve : The engine and pump work at a fixed or maximum output regardless of the actual need. Excess energy is wasted as heat. Think of it as "Brute Force Management."

With a Load Sensing Valve: The system constantly detects the pressure and flow required by the work tools and instructs the pump to deliver only that amount. Think of it as "Precision On-Demand Delivery."

The table below provides a clear, side-by-side comparison:

Detailed Scenario Analysis

1. Energy Efficiency & Heat (The Most Noticeable Difference)

Without Load Sensing:

Scenario: You are performing a fine trenching operation with the backhoe, requiring minimal force and slow movement. The pump is still working hard, delivering full flow. Since you don't need it, most of this high-pressure oil is diverted over the relief valve back to the tank, generating intense heat.

Result:The hydraulic oil temperature skyrockets after just an hour or two of work. This leads to high fuel consumption, accelerated oil degradation, and damage to seals and other components.

With Load Sensing:

Scenario:During the same fine trenching operation, the LS valve detects the low pressure and flow requirement. It sends a signal to the pump to "destroke" and deliver only the necessary amount.

Result:There is little to no wasted flow. The system runs much cooler, fuel consumption is significantly reduced, and the lifespan of hydraulic components is greatly extended.

2. Control & Handling

Without Load Sensing:

Scenario:You try to slowly position a heavy pipe with the loader. The controls feel jerky. The machine moves in "jumps" rather than a smooth motion, making precise placement difficult and stressful for the operator.

With Load Sensing:

Scenario: The same task feels smooth and linear. The movement of the control lever is directly proportional to the speed of the machine's function. You have excellent "feather-touch" control for delicate work like grading or landscaping.

3. Compound Movements

Without Load Sensing:

Scenario:You are loading a truck and need to raise the boom and curl the bucket simultaneously. You'll notice that both actions become slower and may even "stall" each other. The function with the highest load demand steals most of the flow.

With Load Sensing:

Scenario:The LS system prioritizes and manages the flow distribution, allowing the boom and bucket to work together in a coordinated and efficient manner. This makes complex tasks like loading and grading much faster and smoother.

Conclusion and Recommendation

For a versatile machine like a backhoe-loader:

With a Load Sensing Valve is the standard for modern, mid-to-high-end machines. It represents a more advanced, efficient, and operator-friendly technology. The higher initial investment is quickly offset by lower fuel bills, higher productivity, and reduced long-term maintenance costs. It is the clear choice for any serious, high-utilization operation.

Without a Load Sensing Valve is typically found on older designs or entry-level economy models. Its only advantage is a lower purchase price. It may be considered only for very low-budget, infrequent, or non-demanding applications.

In summary, opting for a backhoe-loader with a Load Sensing system is an investment in higher productivity, lower operating costs, and superior operator comfort.