Product Overview
The WE42-G03-B11B-A240, WH42-G03-B2-A240/A110/A220/D24, and WH42-G02 series are high-performance solenoid directional control valves from CML (Camel Precision Co., Ltd.), a leading Taiwanese hydraulic component manufacturer. These valves are widely used in machine tools, metalworking machinery, and various hydraulic systems for directional switching operations.
The WE42-G03-B11B-A240 is a 4/2-way directional valve (4 ports, 2 positions) in the WE42 series, featuring G03 size (NG10 / CETOP 5) with B11B spool type and AC240V/60Hz (AC220V/50Hz) solenoid coil. The valve features wet-type solenoid design with compact size, sensitive switching action, fast response, and high efficiency.
The WH42-G03-B2-A240/A110/A220/D24 and WH42-G02 series belong to CML’s WH series high-flow solenoid valves. The WH series is available in two sizes: G02 (NG6 / CETOP 3) and G03 (NG10 / CETOP 5). The WH42-G03 is G03 size (NG10), while the WH42-G02 is G02 size (NG6). Coil voltage options include A240 (AC240V/60Hz), A110 (AC110V/60Hz), A220 (AC220V/60Hz), and D24 (DC24V).
Both WE and WH series feature wet-type solenoid design and comply with international standards including ISO, CETOP, NFPA, and DIN. High pressure, high flow, low noise, and smooth switching action are the standout characteristics of this series.
As a direct OEM-replacement solution, this valve maintains 100% mechanical and functional interchangeability with the original CML unit. Every valve undergoes rigorous simulation testing—including pressure cycling, thermal variation, and full-stroke endurance validation—to guarantee factory-grade performance. Ideal for industrial hydraulic systems demanding high reliability, fast response, and long service life.
Technical Specifications
WE42-G03-B11B-A240:
Model: WE42-G03-B11B-A240
Brand: CML (Camel Precision Co., Ltd., Taiwan)
Valve Type: Solenoid directional control valve
Valve Configuration: 4/2-way (4 ports, 2 positions)
Nominal Size: G03 (9 mm port diameter)
Mounting Interface: ISO 05 / CETOP 5 / NG10 / NFPA D05
Max. Operating Pressure: 210 bar
Max. Allowable Back Pressure: 100 bar
Flow Range: 63 – 120 L/min
Spool Type: B11B
Coil Voltage: AC240V 60Hz / AC220V 50Hz
Electrical Connection: DIN plug type (N) or ISO junction box type
Media: Hydraulic oil (Mineral oil)
Design: Wet-type solenoid
Mounting Type: Subplate mounting
Standards: ISO, CETOP, NFPA, DIN
WH42-G03-B2-A240 / A110 / A220 / D24:
Model: WH42-G03-B2-A240 / A110 / A220 / D24
Brand: CML (Camel Precision Co., Ltd., Taiwan)
Valve Type: High-flow solenoid directional control valve
Valve Configuration: 4/2-way (4 ports, 2 positions)
Nominal Size: G03 (9 mm port diameter)
Mounting Interface: ISO 05 / CETOP 5 / NG10 / NFPA D05
Max. Operating Pressure: 210 bar
Max. Allowable Back Pressure: 100 bar
Flow Range: 63 – 120 L/min
Spool Type: B2
Coil Voltage: A240 (AC240V 60Hz) / A110 (AC110V 60Hz) / A220 (AC220V 60Hz) / D24 (DC24V)
Electrical Connection: DIN plug type (N) or junction box type
WH42-G02 Series:
Model: WH42-G02-B2-A240 / A110 / A220 / D24, etc.
Brand: CML (Camel Precision Co., Ltd., Taiwan)
Valve Type: High-flow solenoid directional control valve
Valve Configuration: 4/2-way (4 ports, 2 positions)
Nominal Size: G02 (6 mm port diameter)
Mounting Interface: ISO 03 / CETOP 3 / NG6 / NFPA D03
Max. Operating Pressure: 210 bar
Max. Allowable Back Pressure: 100 bar
Flow Range: 63 – 120 L/min
Spool Types: B2 / B3 / B4 / B5 / B8 / B11B / C2 / D2 (multiple options)
Coil Voltage: A240 / A110 / A220 / D24 / D12, etc.
Electrical Connection: DIN plug type (N) or junction box type
Key Technical Advantages
1. Wet-Type Solenoid Design – Long Service Life and High Reliability
Both WE and WH series feature wet-type solenoid design (immersed armature type). The solenoid armature is fully immersed in pressure oil, effectively lubricating moving parts, reducing friction and wear, and significantly improving heat dissipation, extending solenoid service life. Coils can be replaced without opening the pressure-tight chamber, greatly simplifying maintenance.
2. High Pressure, High Flow, Low Noise – Smooth Switching Action
CML’s WE/WH series solenoid valves feature high pressure (210 bar), high flow (63–120 L/min), and low noise with smooth switching action. The dual-flow-path design reduces flow resistance and improves system efficiency.
3. Compliance with Multiple International Standards – Easy Installation
The valves comply with ISO, CETOP, NFPA, and DIN international standards. G02 size corresponds to NG6 / CETOP 3 / NFPA D03, while G03 size corresponds to NG10 / CETOP 5 / NFPA D05. Standardized mounting dimensions ensure interchangeability with similar products and easy installation.
4. Multiple Spool Types and Coil Voltage Options – Versatile Application Support
WE/WH series offer a wide range of spool types including B2, B3, B4, B5, B8, B11B, C2, D2, selectable according to circuit requirements. Coil voltages cover AC110V, AC220V, AC240V, DC12V, DC24V and more, accommodating diverse electrical system requirements.
5. 100% Factory Inspection – Stable and Reliable Quality
CML performs 100% inspection on every valve to ensure stable, high-quality products. Directional indicator lights clearly show the actuation direction, facilitating on-site commissioning and fault diagnosis.
6. Drop-In Interchangeability – Minimized Downtime and Retrofit Costs
The valve strictly adheres to CML’s original mounting dimensions and functional specifications. Whether for new system design or legacy system upgrades, this valve offers 100% mechanical and electrical interchangeability with the original CML unit—eliminating the need for manifold modifications or piping changes, significantly reducing downtime and retrofit expenses.
Application Areas
Machine Tool Industry – CNC lathes, CNC milling machines, CNC turn-mill machines, CNC surface grinders
Metalworking Machinery – Four-column cutting machines, flatbed cutting machines, gantry cutting machines
Die-Casting Industry – Hot and cold chamber die-casting machines, aluminum extrusion machines, vertical squeeze casting machines, gravity casting machines
Shoe Machinery Industry – Toe-lasting, mid-lasting, and heel-lasting machines, EVA injection machines, rotary injection machines, bottoming presses
Rubber Machinery Industry – Horizontal and vertical injection machines, blow molding machines
Lifting System Equipment – Vehicle lifts, parking system equipment
Injection Molding Equipment – Directional switching and sequence control for hydraulic actuators
Industrial Automation Lines – Directional control and logic switching for hydraulic systems
Expert Maintenance Tips
1. Ensure Solenoid Pressure Chamber is Oil-Filled
Proper operation of wet-type solenoids requires the pressure chamber to be completely filled with oil. During initial installation or after extended shutdown, ensure no air remains trapped in the solenoid chamber—air entrapment will affect solenoid thrust characteristics and response speed.
2. Fluid Cleanliness Management
WE/WH series solenoid valves have specific fluid cleanliness requirements. The clearance between spool and bore is extremely tight—contaminants can cause spool sticking or abnormal wear. Install filters with a minimum rating of 10μm upstream of the valve and regularly monitor fluid contamination levels. Recommended working viscosity: 10–400 cSt, temperature: 5–60°C.
3. Electrical Connections and Voltage Matching
WE42-G03-B11B-A240 features AC240V 60Hz / AC220V 50Hz coil. WH42 series offers A240, A110, A220, D24, and other voltage options. Verify that supply voltage and frequency match the valve’s electrical specifications prior to installation—AC solenoids must never be connected to DC power, and vice versa. Electrical connections use DIN plug type or junction box type.
4. Back Pressure Control
The maximum allowable back pressure for this series is 100 bar. To ensure proper operation, return line backpressure must not exceed this value. If system backpressure may exceed the allowable limit, consider using an external drain port configuration.
5. Installation and Sealing
Carefully review the CML product documentation prior to installation. Ensure the mounting surface is flat and smooth. G02 size corresponds to NG6 / CETOP 3 mounting interface; G03 size corresponds to NG10 / CETOP 5 mounting interface. Tighten mounting bolts evenly to specified torque. Take care not to damage or omit seals during assembly.
6. Periodic Inspection and Maintenance
Regularly verify the valve’s shifting response time. If sluggish response or abnormal heating is detected, inspect the solenoid condition and check for spool sticking. Indicator lights can help quickly determine if the actuation direction is normal. For systems that have been idle for extended periods, perform thorough system circulation filtration before restart.
