Direct-operated solenoid valve WL1745

2-wayairfor compressed air

Product Overview
An air proportional valve WL1745 by Weilong converts an electrical input signal into continuously variable pneumatic pressure or flow. It is designed for precise proportional control using electromagnetic actuation and is suitable for automation, medical equipment, robotics, packaging and precision manufacturing where controlled pneumatic output improves process stability and efficiency.

Key Features and OEM Options

• Continuous proportional control via standard inputs (0–10 V, 4–20 mA, PWM).
• Electromagnetic actuator for accurate spool/poppet positioning and smooth regulation.
• Compact footprint, fast response, high repeatability and long operational life.
• OEM customization: voltage selection, pressure ranges, electrical connectors, mounting options and communication interfaces.

Applications

• Industrial automation: actuator speed control, cylinder position control.
• Medical devices: ventilators, anesthesia and oxygen delivery systems requiring stable pressure.
• Robotics: pneumatic grippers, force control and handling systems.
• Packaging machinery: sealing pressure, dosing/filling operations and labeling systems.
• Contamination-sensitive production: semiconductor, laboratory and precision assembly equipment.
• Other: textile, printing, food processing, laser cutting, test chambers and pneumatic conveying.

Advantages

• Precise continuous control of pressure and flow.
• Fast response and excellent repeatability for closed-loop systems.
• Reduced compressed-air consumption and improved energy efficiency.
• Lower mechanical shock and extended downstream component life.
• Compact design enabling straightforward PLC and automation integration.

How It Works
The controller supplies voltage, current or PWM to the valve coil; the resulting magnetic field moves the armature/plunger and shifts the valve spool or poppet to vary the air passage. Models can include integrated sensors and closed-loop feedback to continuously monitor and adjust output pressure for precise regulation under changing load conditions.

Troubleshooting & Maintenance

• No response: verify power supply, input signal and electrical connections.
• Unstable pressure: inspect compressed-air supply for contamination, moisture, low pressure, clogged filters and leaks.
• Slow response: check for contamination, wear, incorrect controller parameters; clean and calibrate as required.
• Overheating: confirm correct coil voltage, avoid continuous overload and ensure ventilation.
• Recommended maintenance: regular air filter replacement, periodic calibration, leak checks and electrical inspections.

Product Datasheet
Brand: Weilong
Model: WL1745
Rated voltage: DC12V or 24V
Rated power: 2 W
Work mode: Air proportional control valve
Working pressure: 0.2 MPa
Air-flow rate: 0–0.5 L/min
Reset time: 1 s ON / 1 s OFF (typical)
Service life: ~200,000 cycles
Certifications: CE, RoHS, ISO9001
Material: superior magnet iron
Lead wire length: 200 mm
Mounting: screw installation
Dimensional tolerance: ±0.1 mm
Waterproof: none (not IP rated)
Insulation class: B; Hi-Pot: AC 600V 50/60Hz 2s
Non-excitation holding force: 0
Operating temperature: -10°C to 100°C
Duty cycle: 1–100%
Sample order: available
Warranty: 1 year
MOQ: 1000 pcs
Supply ability: 5000 pcs/week
Typical lead time: 30 days
Port of loading: Shenzhen

Technical Specifications

• Brand: Weilong
• Model designation: WL1745
• Rated voltages: DC 12 V or 24 V
• Rated power: 2 W
• Working pressure: 0.2 MPa
• Air flow capacity: up to 0.5 L/min
• Response/reset timing: 1 s ON / 1 s OFF
• Service life: approx. 200,000 cycles
• Operating temperature range: -10°C to 100°C
• Insulation class: B; Hi-Pot test: AC 600V 50/60Hz 2s
• Duty cycle: 1–100%
• Lead wire length: 200 mm; mounting: screw
• Certifications: CE, RoHS, ISO9001
• MOQ & supply: 1000 pcs MOQ; 5,000 pcs/week production capacity