Direct-operated solenoid valve WL6940

fuelfor waterfor compressed air

Product overview
The WL 6940 metering solenoid by Weilong Technology is an electromagnetic actuator engineered for precise linear control in industrial applications. It delivers controlled push/pull force for metering, dosing and flow regulation in compact assemblies.

How it works
The device converts electrical input into linear motion: energizing the coil generates a magnetic field that displaces the plunger; a spring or magnetic return restores position when de-energized. Typical driven mechanisms include:

• Valve opening/closing
• Fluid and gas flow adjustment
• Dispensing and dosing mechanisms
• Actuation of small precision parts

Main features

• Precise, repeatable linear motion for metering and dosing
• Fast electromagnetic response and switching
• Compact footprint for space-constrained equipment
• Configurable voltage, stroke and force to match OEM requirements
• Optimized coil winding and magnetic circuit to limit heating
• Carbon steel housing with zinc plating for standard protection

Applications
Suitable for systems requiring accurate electromagnetic control:

• Medical devices: infusion, oxygen control, diagnostic analyzers
• Industrial automation: dispensing systems, pneumatic actuators, robotics
• Fuel and energy: precision liquid/gas control and injection systems
• Water and fluid management: pumps, dispensers, treatment equipment
• Laboratory instruments requiring repeatability and dosing accuracy

Technical data
Brand : Weilong Technology
Model Number : WL 6940
Rated Voltage (V) : DC 12 or 24 V
Rated Power (W) : 10–60 W
Work Model / Lifespan : 100 000 Lifespan Cycles
Push / Pull Force (N) : 1–60 N at 0–2 mm
Stroke (mm) : 3–10 mm
Reset Time (s) : 1 s / 3 s / Off options
Service Life : ~300,000 cycles
Certification : CE, ROHS, ISO9001
Material : Carbon steel housing, zinc plated coating
Lead Wire Length (mm) : 200
Install Style : both sides with three mounting screw holes
Tolerance of Dimension : +/- 0.1 mm
Water-proof : none
Insulation Class : F (up to 150°C)
Hi-Pot Test : AC 600 V 50/60 Hz 1 s
Non-excitation Holding Force : 0
Working Temperature : -10°C to 100°C
Duty Cycle : 1–100%
Payment Term : TT or LC at sight
Sample Order : Yes
Warranty : 1 year
MOQ : 500 pcs
Supply Ability : 5000 pcs per week
Delivery Time : 30 days
Port of Loading : shenzhend

Advantages & disadvantages
Advantages

• High metering accuracy and repeatability
• Rapid response for dynamic control tasks
• Small form factor for OEM integration
• Flexible electrical and mechanical customization

Disadvantages

• Heat generation under continuous operation; requires thermal consideration
• Limited stroke compared with larger actuators
• Continuous hold consumes power (coil heating)
• Force sensitive to air gap and installation tolerances
• May need environmental protection in corrosive conditions

Troubleshooting

• Solenoid does not operate: verify supply voltage, coil continuity, wiring and controller outputs
• Low force: check operating voltage, coil spec, mechanical overload and air gap
• Overheating: review duty cycle, supply voltage and heat dissipation
• Slow response: inspect friction, plunger cleanliness and spring
• Short service life: examine wear, overloading and manufacturing defects

Specifications

• Model: WL 6940
• Rated voltage: DC 12 V / DC 24 V
• Rated power: 10–60 W
• Stroke: 3–10 mm
• Push/pull force: 1–60 N (0–2 mm)
• Insulation class: F (≤150°C)
• Operating temperature: -10°C to 100°C
• Service life: ~300,000 cycles
• Duty cycle capability: 1–100% (depends on configuration)
• Housing: carbon steel, zinc plated
• Lead length: 200 mm
• Certifications: CE, ROHS, ISO9001
• MOQ / Supply: sample available; MOQ 500 pcs; capacity ~5000 pcs/week; lead time ~30 days