Two-way Cartridge Valve (Directional Control) - LC Type

Two-way Cartridge Valve (Directional Control) - LC Type

2 month ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

I. Function and Features

1. Directional Control Function

• Controls the flow direction of hydraulic fluid to enable start, stop, or reversing of actuators (e.g., hydraulic cylinders, motors).

• Serves as an alternative to traditional spool-type directional valves, especially in high-pressure, high-flow systems.

2. Structural Advantages

• Compact Design: Integrated valve body reduces installation space and facilitates integration into hydraulic manifolds.

• Standardized Interfaces: Mounting holes comply withISO 7368, ensuring compatibility.

• High Reliability: Precision-matched valve poppet and sleeve minimize leakage and enhance contamination resistance.

3. Control Modes

• Driven by pilot control oil to actuate the main valve poppet, enabling flow path switching.

• Compatible with solenoid valves, proportional valves, and other pilot control elements for automation.

II. Technical Specifications (Example)

Parameters based on typical products fromBosch Rexrothand other manufacturers (may vary by model):

【表格】

Parameter Value Range

Nominal Size 16, 25, 32, 40, 50, 63, 80, 100 mm

Series 2X, 6X, 7X

Max. Operating Pressure 420 bar (up to 500 bar for some models)

Max. Flow Rate 25,000 L/min (model-dependent)

Valve Poppet Type With or without damping nose

Area Ratios 2 options (affect opening/closing characteristics)

Cracking Pressure 6 options (adjustable per requirements)

Stroke Limitations 4 options (controls poppet travel)

III. Structural Components

1. Valve Body

• Provides mounting holes and ports (A/B) for main oil circuit connections.

• Integrates a valve sleeve for sealing with the poppet.

2. Valve Poppet

• Actuated by pilot pressure to control A/B port connectivity.

• Optional damping nose design optimizes dynamic response.

3. Control Cover (LFA Type)

• Seals the valve body while providing pilot control oil interfaces.

• May integrate check valves, shuttle valves, or other functions to extend control logic.

• Example model:LFA 25 WEA 7X/...(with directional valve and cartridge connector).

4. Pilot Control Valve

• Typically a solenoid-operated directional valve or proportional valve mounted on the control cover.

• Controls pilot pressure via electrical signals to actuate the main poppet.

IV. Applications

1. Industrial Hydraulic Systems

• Metallurgical machinery, injection molding machines, die-casting machines, and other high-pressure, high-flow equipment.

• Suitable for frequent reversing or precise actuator control.

2. Construction Machinery

• Travel, swing, or working device control in excavators, cranes, etc.

• Example: Controlling hydraulic cylinder extension/retraction direction via LC-type valves.

3. Automated Production Lines

• Robotics, assembly lines, and other systems requiring precise synchronized hydraulic control.

• Combined with proportional valves for stepless speed and direction adjustment.

V. Selection Guidelines

1. Flow and Pressure Matching

• Choose nominal size and series (e.g., 6X for high-pressure applications) based on system max flow and pressure.

• Ensure poppet area ratio and cracking pressure meet dynamic response requirements.

2. Control Mode Selection

• Simple reversing: Solenoid pilot control.

• Complex logic: Select control covers with integrated check valves or shuttle valves (e.g., LFA with directional valve).

• Precision control: Pair with proportional valves for stepless adjustment.

3. Installation and Maintenance

• Verify mounting holes comply with ISO 7368.

• Regularly inspect seals (e.g., O-rings) for wear to prevent leakage.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

4 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump , hydraulic valve , hydraulic winch, hydraulic system

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