HAWE G GS GR Series Solenoid Valve | GR2-3-G24 GS2-12-GM24 GZ3-1-G24

The G, GR, GS, and GZ Series solenoid directional seated valves from Chengyuan Hydraulic are high-pressure control components fully compatible with HAWE standards. Utilizing a unique ball-seated design, these valves eliminate the internal leakage common in spool-type valves, achieving “zero leakage” even under prolonged high-pressure holding. For core models like GR2-3-G24 (with orifice) and GS2-12-GM24 (with damping), we utilize reinforced armatures and high-hardness alloy steel seats. Every valve undergoes 100% simulated full-pressure operation testing to ensure responsive switching even at 450 bar, guaranteeing 100% original-place interchangeability.

Technical Specifications (GS2/GR2 Series):

• Series Model: HAWE G/GS/GR/GZ (Directional Seated Valve)

• Max Operating Pressure: 450 bar (45 MPa)

• Max Flow Rate: 12 L/min to 25 L/min (model dependent)

• Internal Leakage: Ball-seated design, zero leakage in closed position

• Standard Voltage: $24V DC$ (G24), $220V AC$ and others available

• Switching Frequency: Supports over 100 cycles per minute

• Mounting Type: Manifold mounting

• Fluid Temp Range: $-40°C$ to $+80°C$

Key Technical Advantages:

• Zero-Leakage Ball Sealing: The hard-on-hard contact between the steel ball and the valve seat ensures superior sealing compared to slide spools. This is critical for clamping, pressure holding, and safety circuits to prevent cylinder drift.

• Contamination Resistance: The seated design is less sensitive to fine particles in the hydraulic fluid, significantly reducing the risk of “sticking” common in spool valves. High-strength springs ensure reliable resetting in harsh conditions.

• Integrated Damping (GM/GS): For systems prone to high hydraulic shock, models like GS2-12-GM24 feature an integrated switching damper to slow down the valve stroke, eliminating water hammer effects and protecting piping.

• Wet-Type Solenoid Construction: The solenoid armature operates immersed in hydraulic oil, providing excellent heat dissipation and oil damping to reduce operational noise and extend the lifespan of the solenoid head.

Application Areas:

• Machine Tool Fixtures: Maintaining clamping pressure over long durations to prevent workpiece release.

• Hydraulic Locking Systems: Precise position holding for telescopic booms and outriggers in mobile machinery.

• Compact Power Units (HPU): Space-limited micro-hydraulic stations requiring zero leakage.

• Lubrication & Filtration: High-pressure bypass switching for heavy industrial systems.

Expert Maintenance Tips:

• Surface Precision: As these are manifold-mounted for extreme pressure, ensure the mounting surface flatness is within 0.01mm to prevent O-ring extrusion.

• Overheat Protection: While rated for continuous duty, ensure adequate ventilation in high-temp environments to keep the solenoid surface temperature below $110°C$.

• Selection Note: GR models include an integrated orifice. If your system has strict requirements for switching speed, always verify the orifice diameter specifications before installation.