NC solenoid valve WL0725

for waterfor gasair

Product Overview
A solenoid flapper valve is a magnetic control valve that uses an electromagnetic solenoid to actuate a flexible flapper mechanism to open or close a flow path for air, ink, gas or liquid. It is designed for applications that require high-frequency switching, quick response, compact size, low power consumption and reliable operation. Customized designs allow tuning of voltage, force, stroke, sealing capability and lifetime to meet specific OEM or industrial application requirements.

How it works

• Electrical activation: voltage applied to the coil generates a magnetic field.
• Magnetic movement: the magnetic force attracts the inner plunger/armature to generate mechanical movement.
• Flapper open/close: the movement drives the flapper to open or close the flow path.
• Flow control and reset: when energized the valve allows flow; when de-energized a spring or elastic return restores the flapper.

Main benefits and results

• Quick response (millisecond-level switching)
• Quiet operation
• Reliable repeatable switching
• Compact footprint suitable for tight installations
• Long service lifetime with proper selection and maintenance

Features

• Compact design optimized for frequent operation
• Fast response time and precise flow control
• Reliable switching performance with good repeatability
• Low power consumption with options for various voltages and coil designs
• Customizable: voltages, stroke, sealing materials and lifetime tuning for OEM needs

Typical Applications

• Printing industry: ink delivery, print head control, cleaning systems where precise fast switching is required
• Medical and laboratory equipment: miniaturized valves for fluid and gas control
• Industrial automation: pneumatic control, dispensing, material handling and precision control systems
• Packaging machines: filling, sealing and dispensing requiring fast actuation
• Robot systems: compact valves for precise motion and process control

Advantages & Disadvantages (summary)

• Advantages: fast switching, small size, simple electronic ON/OFF control, high reliability, easy maintenance, suitable for frequent operation.
• Disadvantages: lower pressure capability compared with some industrial valves, performance dependent on sealing design, requires appropriate voltage control, may need custom development for special applications.

Troubleshooting (common issues and remedies)

• Valve not working: check supply voltage, coil continuity/resistance, wiring and connections.
• Poor flow control: check for obstructions, verify correct valve selection and sealing condition, clean valve and check operating pressure.
• Overheating: confirm duty cycle and voltage, check heat dissipation and review thermal design.
• Leakage: inspect/replace flapper and seals, improve assembly accuracy and sealing materials.

Specifications

• Brand: Weilong Technology
• Model Number: WL0725
• Rated Voltage (V): DC 3–48V
• Rated Power (W): 3-6 W
• Work Model: Flapper Type Design
• Holding Force (N): 50 Gf
• Stroke (mm): 19.7 MM
• Reset Time: 50 ms
• Service Life: 300,000 cycles
• 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 °C)
• Hi-Pot Test: AC 600V 50/60Hz 2s
• Non-excitation Holding Force: 0
• Working Temperature: -10°C - 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: Shenzhen