Pressure pre-compensated Load-Sensing and Flow Sharing valves

Pressure Pre-Compensated Load-Sensing (LS) and Flow Sharing Valves are key components in advanced hydraulic systems, particularly in mobile machinery. These valves improve system efficiency, control precision, and operational flexibility. Here’s a deeper exploration of their function, benefits, and applications.

Key Concepts

Load Sensing (LS) Technology:

Function: Measures the pressure required by each actuator (load) and regulates flow accordingly.
Benefit: Optimizes pump output to provide only the necessary flow, reducing energy consumption.

Pressure Pre-Compensation:

Function: Maintains a consistent pressure difference between the pump and actuator, ensuring flow stability regardless of system pressure changes.
Benefit: Enhances control and predictability of flow to multiple actuators working simultaneously.

Flow Sharing (Flow Division):

Function: Distributes available flow proportionally to multiple functions, preventing one actuator from "starving" others of flow.
Benefit: Provides consistent control when multiple operations are performed simultaneously, even under varying load demands.

Benefits

Energy Efficiency:

The pump delivers only the required flow, minimizing energy waste compared to constant flow systems.
Smooth Multi-Function Control:

Flow sharing ensures stable and proportional operation across multiple functions, enhancing machine responsiveness and operator control.
Improved Machine Performance:

Precise flow control reduces jerky movements, increases safety, and improves task accuracy.
Reduced Heat Generation:

Lower pump demand means less energy is converted to heat, improving overall system durability.

Applications

Agricultural Equipment: Tractors, harvesters, and sprayers use LS flow-sharing valves to control implements and steering functions.

Construction Machinery: Excavators, loaders, and cranes rely on these systems for precise bucket, boom, and tool control.

Forestry and Mining: Complex, multi-actuator systems benefit from smooth and coordinated hydraulic operation.