GZ3-12-GM 24 / GZ3-2-G24 / G3-0-G24 / WGZ 3-2 R-WG 110
Product Overview
The GZ3-12-GM 24, GZ3-2-G24, G3-0-G24, and WGZ 3-2 R-WG 110 are solenoid operated directional seated valves from HAWE Hydraulik. Founded in 1949, HAWE is a global leader in high-pressure hydraulic components, renowned for 700 bar ultra-high pressure capability, leakage-free seated valve technology, and all-steel valve bodies.
HAWE directional seated valves feature a spring-loaded ball-type poppet design, with the poppet actuated via an angle lever and push rod against spring and hydraulic pressures. Basic configurations include 2/2-way and 3/2-way valves, which can be combined within a single manifold to achieve 3/3-way and 4/3-way functions.
GZ3-12-GM 24:
The GZ3-12-GM 24 is a Size 12 solenoid directional seated valve in the HAWE GZ3 series, corresponding to Size 1. “GM24” denotes a 24V DC wet-type solenoid. This valve is used to control flow direction in hydraulic systems via electromagnetic signals. G3-12-GM24 is an equivalent model.
GZ3-2-G24:
The GZ3-2-G24 is a Size 2 solenoid directional seated valve in the HAWE GZ3 series. “2” indicates Size 2, and “G24” denotes 24V DC supply. The GZ3-2 series is designed for higher flow applications.
G3-0-G24:
The G3-0-G24 is a Size 0 solenoid directional seated valve in the HAWE G3 series. Designed for single-unit installation with internal leakage balance—no drain port required. The all-steel construction withstands pressure shocks without leakage.
WGZ 3-2 R-WG 110:
The WGZ 3-2 R-WG 110 is a HAWE WGZ series solenoid directional seated valve. This model features an AC solenoid with built-in rectifier, with “WG 110” denoting 110V AC supply. The “R” suffix typically indicates manual override.
As original HAWE solenoid directional seated valves, these products offer complete interchangeability within the same series and size, requiring no modifications to manifold designs or piping layouts.
Technical Specifications (Bulleted List)
GZ3-12-GM 24 Specifications:
Model: GZ3-12-GM 24 / G3-12-GM24
Brand: HAWE
Series: GZ3 / G3 Series
Product Type: Solenoid Operated Directional Seated Valve
Size: Size 1
Nominal Size: 12
Spool Configuration: 2/2 or 3/2 (configuration dependent)
Maximum Operating Pressure: 31.5 MPa (315 bar)/ 350–500 (700) bar
Nominal Flow Rate: 60 L/min
Maximum Flow Rate: 80 L/min (intermittent)
Allowable Back Pressure: ≤16 MPa
Coil Voltage: 24V DC
Voltage Tolerance: ±10%
Power Consumption: 18 W
Insulation Class: Class F (155°C)
Protection Class: IP65
Spool Stroke: 4.5 mm
Response Time: Energized ≤0.15s / De-energized ≤0.2s
Internal Leakage: <0.3 mL/min
Fatigue Life: >1 million cycles
Mounting Interface: ISO 4401, G3/4″ threaded ports
Media: HM hydraulic oil (ISO 6743/4)
Media Temperature Range: -20°C to +80°C
Ambient Temperature Range: -10°C to +50°C
Recommended Viscosity: 20–400 mm²/s
Recommended Filtration: ≥10 μm
Recommended Cleanliness: NAS Class 8 (ISO 4406 20/18/15)
Weight: Approx. 0.4 kg
GZ3-2-G24 Specifications:
Model: GZ3-2-G24
Brand: HAWE
Series: GZ3 Series
Product Type: Solenoid Operated Directional Seated Valve
Size: Size 2
Spool Configuration: 3/2
Maximum Operating Pressure: 700 bar
Maximum Flow Rate: 12 L/min
Coil Voltage: 24V DC
Body Material: All-steel
Mounting: Subplate or pipe connection
Weight: Approx. 0.4 kg
G3-0-G24 Specifications:
Model: G3-0-G24
Brand: HAWE
Series: G3 Series
Product Type: Solenoid Operated Directional Seated Valve
Size: Size 0
Maximum Operating Pressure: 400 bar
Maximum Flow Rate: 100 L/min
Coil Voltage: 24V DC
Body Material: All-steel
Bore Finish: Diamond-honed
Spool Treatment: Hardened, ground, polished/deburred
Mounting: Pipe connection or subplate mounting
Leakage Characteristic: Internal leakage balanced—no drain port required
WGZ 3-2 R-WG 110 Specifications:
Model: WGZ 3-2 R-WG 110
Brand: HAWE
Series: WGZ Series (Solenoid Operated Directional Seated Valve)
Size: Size 2
Spool Configuration: 3/2
Maximum Operating Pressure: 500 bar
Maximum Flow Rate: 12 L/min
Coil Voltage: 110V AC, 50/60Hz
Rectifier: Built-in
Manual Override: Equipped (R suffix)
Body Material: All-steel
Key Technical Advantages
1. Leakage-Free Ball-Type Poppet Design — Zero Internal Leakage
HAWE directional seated valves feature a spring-loaded ball-type poppet design. Unlike spool-type valves, the ball-type poppet design achieves zero leakage through metal-to-metal sealing between the ball and seat. Internal leakage is as low as <0.3 mL/min—critical for applications requiring long-term actuator position holding.
2. All-Steel Valve Body — Withstands Pressure Shocks Without Leakage
HAWE GZ/G3/WGZ series valves are constructed entirely from steel, enabling the valve body to withstand pressure shocks without leakage. Unlike cast iron bodies that may develop micro-cracks after prolonged high-pressure operation, all-steel construction fundamentally eliminates this risk. Valve bores are diamond-honed, and spools are hardened, ground, polished, and deburred to ensure roundness and precision.
3. Ultra-High Pressure Capability (Up to 700 bar)
HAWE directional seated valves are renowned for 700 bar ultra-high pressure capability. The GZ3-2-G24 operates at up to 700 bar. This capability makes them the industry standard for hydraulic bolt tensioners, torque wrenches, and other ultra-high-pressure hydraulic tools.
4. Low Shifting Force with Smooth, Shock-Free Switching
HAWE directional seated valves feature low shifting force and smooth, shock-free switching. The spool cushioning design limits switching noise to ≤65 dB (measured at 1 meter). This effectively reduces system pressure fluctuations and shocks, extending the service life of system components.
5. Flexible Modular Combination Capability
Basic configurations include 2/2-way and 3/2-way valves. Combining two valves within a single manifold enables 3/3-way and 4/3-way functions. A 4/2-way valve can also be created using an intermediate plate. Supports stack mounting of pilot-operated check valves, throttle valves, and other functional modules.
6. Subplate and Pipe Mounting Options
Supports both subplate mounting and pipe connections. All manifold faces feature O-ring seals. For pipe connections, users can fabricate their own mounting plates or manifolds. Single-unit installation design ensures convenient installation and maintenance.
Application Areas
GZ3-12-GM 24 (350 bar / 60 L/min):
Injection Molding Machinery — Clamping/injection cylinder directional control
CNC Press Brakes and Hydraulic Presses — Slide drive control
Compact Excavators — Boom/arm cylinder control
Aerial Work Platforms — Outrigger hydraulic circuits
Wind Turbine Systems — Yaw brake hydraulic stations
Municipal Sanitation Vehicles — Waste compactor drive control
GZ3-2-G24 / G3-0-G24 (400–700 bar / 12–100 L/min):
Hydraulic Bolt Tensioners — Ultra-high-pressure bolt preload control
Hydraulic Torque Wrenches — Bolt tightening torque control
Riveting Tools — High-pressure riveting hydraulic stations
Ultra-High-Pressure Test Benches — High-pressure test circuit control
Heavy Construction Machinery — Ultra-high-pressure hydraulic system directional control
Expert Maintenance Tips
1. Installation Guidelines
GZ3-12-GM 24 mounting interface is ISO 4401 standard G3/4″ threaded ports (P, A, B, T). Verify port size compatibility before installation.
GZ3-2-G24 and G3-0-G24 support pipe connections or subplate mounting. For pipe connections, mounting plates or manifolds can be fabricated.
Thoroughly clean all ports before installation to prevent foreign particles from entering and causing seal damage.
All manifold faces feature O-ring seals. Verify seals are intact during installation.
2. Hydraulic Fluid Cleanliness
Recommended fluid: HM hydraulic oil per ISO 6743/4.
Recommended cleanliness: NAS Class 8 (ISO 4406 20/18/15).
Install ≥10 μm filtration.
Recommended viscosity: 20–400 mm²/s.
Water content: ≤0.1%.
3. Electrical Connection Specifications
GZ3-12-GM 24 / GZ3-2-G24 use 24V DC supply with standard voltage tolerance ±10%.
WGZ 3-2 R-WG 110 uses 110V AC supply (50/60Hz) with built-in rectifier. Observe correct polarity during wiring.
Insulation Class: Class F (155°C).
Protection Class: IP65. Ensure electrical connector is properly locked.
4. Temperature Management
Media temperature range: -20°C to +80°C.
Long-term operating oil temperature not to exceed 60°C to extend seal life.
For cold starts, run no-load until oil temperature reaches ≥10°C.
Ambient temperature range: -10°C to +50°C.
5. Pressure and Back Pressure Control
GZ3-12-GM 24 system pressure must not exceed 31.5 MPa, back pressure controlled within 16 MPa.
Transient shock pressure up to 35 MPa permitted (duration <0.1s).
6. Periodic Maintenance Inspection
Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.
Check electrical connectors for looseness, oxidation, or moisture ingress.
Solenoid and valve body feature modular design—solenoid assemblies can be replaced individually, repair time <30 minutes.
If response lag or unstable shifting is observed, first check system fluid cleanliness and filter condition.
G3-0-G24 valve bores are diamond-honed with hardened ground spools—normal spool wear is minimal.
