HAWE GS2 Series Cut-off Directional Valve | GS2-12-GM24 | GS2-0 GS2-1 GS2-2

The HAWE GS2 Series from LIC Hydraulic is a premier line of solenoid-actuated cut-off directional valves. Unlike standard spool valves, the GS2 utilizes a ball or cone seating element to achieve static zero-leakage. Ranging from sizes GS2-0 to GS2-4, including the popular GS2-12-GM24, these valves are the gold standard for high-pressure holding applications. We guarantee 100% mechanical interchangeability and subject every unit to 100% high-pressure leak tests and solenoid response validation, ensuring flawless performance at pressures up to $400\text{ bar}$.

Technical Configuration Details

• Series Hierarchy: GS2-0, GS2-1, GS2-2, GS2-3, GS2-4.

• Functionality: 2/2-way and 3/2-way cut-off functions.

• Manual Override (R): Optional manual emergency actuators (e.g., GS2-0R).

• Solenoid Voltage: Standard $24\text{V DC}$ (GM24), also available in AC options.

• Max Pressure: $400\text{ bar}$ ($5800\text{ psi}$).

• Flow Rate: Varies by size, optimized for high-pressure control.

Key Technical Advantages

• Zero-Leakage Sealing: The seating principle ensures that when the valve is closed, the flow path is hermetically sealed. This is critical for systems that require pressure maintenance over long durations without pump intervention.

• Superior Pressure Resilience: Built with hardened and ground steel components, the GS2 series can handle frequent high-pressure switching cycles without seal degradation.

• Contamination Resistance: The cut-off seat design is naturally less sensitive to particulates compared to spool-type valves, significantly reducing the risk of “sticking” in contaminated systems.

• Compact Footprint: Ideal for space-constrained installations, these valves are designed for direct manifold mounting or inline integration into HAWE compact power packs.

Application Areas

• Clamping Units: Maintaining rock-solid fixture pressure in CNC machining centers.

• Safety Interlocks: Hydraulic locking for cylinders to prevent unintended movement.

• Compact HPUs: Essential directional control for HAWE HC, MP, and HK series power units.

• High-Pressure Test Benches: Precision cut-off control for pressure testing and burst analysis.

Expert Maintenance Tips

• Solenoid Power Integrity: For GM24 models, ensure the coil is supplied with a steady $24\text{V}$. Low voltage can lead to incomplete switching, which causes excessive heat and potential valve failure.

• Inlet Orientation: Ensure that the high-pressure inlet is connected to the correct port as specified in the HAWE manual (usually Port P). Reversed flow can force the seating element open, defeating the zero-leakage feature.

• Fluid Condition: To maintain the absolute zero-leakage integrity at $400\text{ bar}$, keep your hydraulic fluid filtered to ISO 4406 19/17/14 or better. Particles caught on the seat are the primary cause of minor weeping.