Direct-operated solenoid valve WL1227

airfor waterfor gas

Product overview
A flapper solenoid WL1227 is a compact electromagnetic actuator designed to convert electrical input into precise mechanical flapper movement for control of air, fluid or small mechanical positioning. It is tailored for machine integration where fast response and limited installation space are required.

Main components and how it operates

• Electromagnetic coil and winding: creates the magnetic field when energized.
• Iron core and armature: magnetic parts that translate the field into motion.
• Return spring: returns the flapper to its rest position when de-energized.
• Flapper mechanism: converts armature travel into control of airflow, liquid flow or mechanical action.
• Casing and mounting: carbon steel housing with zinc plating and adjustable screw-mount options for compact installation.

Operation steps

• Activation: DC voltage (3–48 V) applied to the coil generates current in the winding.
• Magnetic force: the field attracts the armature toward the core.
• Flapper actuation: armature movement drives the flapper to open/close or position the controlled element.
• Control function: used to regulate airflow, liquid flow, pressure release or mechanical positioning depending on the application.
• Return: when power is removed the spring resets the flapper; design ensures rapid, repeatable action.

Main features
Compact footprint, fast response (~50 ms reset), selectable power range (5–33 W), customizable voltage and mounting. Suitable for continuous or intermittent duty depending on specification. Housing: carbon steel with zinc-plated coating.

Typical applications

• Printing machines: ink flow control, paper feed valves, air valves and positioning systems.
• Medical devices: fluid control in diagnostic and laboratory equipment.
• Industrial automation: switching, locking and small-motion positioning in automated equipment.
• Pneumatic and fluid control: precise control of air, gas and liquid flows.
• Compact actuation in OEM devices and smart equipment.

Advantages & disadvantages

• Advantages: small size, quick accurate switching, low energy relative to large actuators, OEM customization options.
• Limitations: lower absolute force than large actuators, risk of overheating if used beyond duty rating, mechanical wear with very high cycle counts if not specified correctly.

Troubleshooting (common problems & solutions)

• No operation: verify supply voltage, measure coil resistance and check wiring connections.
• Weak force: confirm rated voltage, reduce mechanical friction or select a higher-force model.
• Overheating: check duty cycle and avoid prolonged continuous operation beyond specifications; improve cooling if necessary.
• Slow response: inspect for mechanical blockages, verify spring condition and reduce overload.

Technical datasheet
Brand: Weilong Technology
Model Number: WL1227
Rated Voltage (V): DC 3–48V
Rated Power (W): 5–33W
Work Model: Flapper Type Design
Holding Force (N): 300 Gf
Stroke (mm): 0 MM
Reset Time(s): 50 Ms
Service Life: 300 Thousand Times
Certification: CE, RoHS, ISO9001
Material: Carbon Steel Housing with Zinc-Plated Coating
Lead Wire Length (mm): 200
Install Style: Adjustable Screw
Tolerance of Dimension: ± 0.1 MM
Water-proof: None
Insulation Class: F 155 Cel. Degree
Hi-Pot Test: AC 600V 50/60Hz 2s
Non-excitation Holding Force: 0
Working Temperature: -10°C-100°C
Duty Cycle: 1-100%
Thread Depth (mm): /
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: shenzhen

Technical specifications

• Brand: Weilong Technology
• Model: WL1227
• Voltage range: DC 3–48 V (customizable)
• Power range: 5–33 W
• Response / reset time: ~50 ms
• Holding force: ~300 gf (non-excitation holding force 0)
• Stroke: 0 mm (flapper-type action)
• Service life: ~300,000 cycles (typical)
• Material/housing: carbon steel with zinc-plated coating
• Lead wire length: 200 mm
• Install style: adjustable screw mount
• Operating temperature: -10 °C to 100 °C
• Duty cycle: 1–100% (design dependent)
• Insulation class: F (155 °C)
• Hi-Pot: AC 600 V, 2 s
• MOQ / supply: MOQ 500 pcs; supply capacity ~5000 pcs/week
• Warranty: 1 year