FSC Electromagnetic Flow Control Valve | FSC-G03-2-DC24V | FSC-G02 Speed Control Valve

The FSC Series from LIC Hydraulic is a sophisticated Electromagnetic Flow Control Valve (also known as a Solenoid-operated Speed Control Valve). It combines a high-precision pressure-compensated flow regulator with a solenoid directional spool. This allow the system to switch between a pre-set regulated speed and a full-flow (or bypass) state via an electrical signal. Models like FSC-G03-2-DC24V are essential for machines requiring “Rapid-to-Slow” speed cycles. Our valves offer 100% drop-in interchangeability with global industry standards and are rigorously tested for response accuracy and thermal stability.

Technical Specifications

• Sizes: G02 (1/4″) and G03 (3/8″)

• Voltage Options: AC220V, AC110V, DC24V (LED indicator plugs available)

• Max Operating Pressure: 210 bar (3045 psi)

• Flow Adjustment Range: $0.2$ to $60\text{ L/min}$ (depending on frame size)

• Function Codes:

  • Type 1: Flow is open when de-energized, regulated when energized.

  • Type 2: Flow is regulated when de-energized, open when energized.

• Mounting: ISO 4401 (CETOP) standard subplate mounting.

Key Technical Advantages

• Integrated Dual-Speed Control: Eliminates the need for separate flow and directional valves, reducing manifold size and potential leak points.

• Constant Flow via Pressure Compensation: The internal compensator ensures that the actuator speed remains constant regardless of load fluctuations, providing superior process stability.

• Precision Scale Dial: Features a fine-thread adjustment knob with a locking mechanism, allowing for repeatable and accurate speed settings.

• Wet-Pin Solenoid Design: The armature operates submerged in oil, providing natural lubrication and dampening, resulting in quiet operation and an extended duty cycle.

Typical Applications

• Machine Tools: Speed switching for CNC lathe turret feeding (Rapid Approach vs. Cutting Speed).

• Grinding Machines: Controlled table traverse and cushioning.

• Woodworking Machinery: Fast-approach and precision-feed cycles for automatic cutting equipment.

• Custom HPUs: Any automated system requiring electrical switching between multiple preset flow rates.

Expert Maintenance Tips

• System Flushing: To prevent the internal compensator spool from sticking, ensure the hydraulic fluid meets ISO 19/16 cleanliness.

• Correct Orientation: Pay close attention to the flow direction arrows on the valve body. Reverse flow through the regulated port can damage the internal seals.

• Coil Protection: For DC24V versions, ensure the electrical circuit includes flyback diode protection to prevent voltage spikes from damaging the solenoid during switching cycles.