The LKF-1 Series Pressure Compensated Variable Flow Control Valve is a high-performance hydraulic flow control valve designed to maintain a constant flow rate regardless of load pressure fluctuations. By automatically compensating for pressure changes within the hydraulic system, the valve ensures stable actuator speed, improved system accuracy, and enhanced operational efficiency.

The LKF-1 Series is widely used in machine tools, hydraulic presses, construction equipment, injection molding machines, agricultural machinery, and various industrial hydraulic systems requiring precise flow regulation.

Working Principle

The LKF-1 Series combines a throttle valve and a pressure compensator in a single assembly.

Flow Adjustment

• The operator adjusts the throttle opening to set the desired flow rate.

Pressure Compensation

• When system load changes, pressure differences across the valve tend to affect flow.
• The internal compensator spool automatically adjusts its position to maintain a constant pressure drop across the throttle orifice.

Stable Output Flow

• As a result, the valve delivers a nearly constant flow rate regardless of load pressure variations, ensuring consistent actuator speed.

Typical Applications

The LKF-1 Series is suitable for:

• Hydraulic machine tools
• Injection molding machines
• Hydraulic presses
• Construction machinery
• Agricultural equipment
• Material handling systems
• Conveyor drives
• Industrial automation equipment
• Hydraulic test benches
• Packaging machinery
• Metallurgical equipment