Linear solenoid WL7050

laboratorycompactDC

Overview
A metering pump solenoid is an electromagnetic actuator used to displace a piston or diaphragm in dosing pumps. It consists of a coil and a movable plunger (armature). When energized, electromagnetic force moves the plunger to generate fluid flow through the pump chamber. Compared with motor-driven actuators, solenoid actuators are compact, provide fast response and have a simple construction, making them suitable for low‑flow and intermittent dosing in industrial processes.

Applications

• Chemical dosing and injection systems (pH adjustment, chlorine dosing)
• Water and wastewater treatment plants
• Medical devices and laboratory dispensers for precise fluid delivery
• Food & beverage processing for controlled dispensing of flavors and additives
• Agricultural dosing in fertigation and pesticide injection systems
• Industrial automation: lubricators, coolant and chemical dosing systems, printing and textile machinery
• Environmental protection equipment and fuel additive systems

Key Features

• Fast response and high actuation speed for precise dosing
• Accurate fluid delivery controlled by stroke length and actuation frequency
• Compact footprint compared with motor-driven solutions
• Low power consumption and energy-efficient operation
• Simple design for easy integration and maintenance
• Available materials suitable for corrosive media when specified

Advantages & Disadvantages

• Advantages: precise dosing, compact size, rapid response, low maintenance and low energy use
• Disadvantages: not optimal for very large flow volumes, heat generation at high frequency, potential vibration/noise, reduced life in aggressive media if improper materials chosen

Troubleshooting / Common Issues

• Failure to start: check supply voltage, coil continuity, electrical connections and overheating
• Poor pumping performance: verify input voltage, springs, plungers and mechanical wear
• Fluid leakage: inspect diaphragms, seals and plungers; replace worn parts
• Overheating: reduce operating frequency, verify correct voltage and improve ventilation
• Vibration/noise: check lubrication, component wear and assembly balance

Product datasheet (table)
Brand: Weilong Technology
Model Number: WL7050
Rated Voltage (V): DC220V
Rated Power (W): 150–200 W
Work Mode: Push and Pull
Holding Force (N): 30 kg
Stroke (mm): 2–5 mm (customizable)
Working Duty: 10%
Service Life: ~200,000 cycles
Certification: CE, RoHS, ISO9001
Material: Superior magnet iron
Lead Wire Length (mm): 200 mm
Install Style: Screw mount
Tolerance of Dimension: ±0.1 mm
Water‑proof: None
Insulation Class: B
Hi‑Pot Test: AC 600V 50/60Hz 2s
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: 1000 pcs
Supply Ability: 5000 pcs/week
Delivery Time: 30 Days
Port of Loading: Shenzhen

How it works
The solenoid coil generates a magnetic field when energized, moving the plunger/armature which displaces a diaphragm or piston in the pump chamber. When power is removed the return spring repositions the armature and the intake valve allows liquid into the chamber. Output flow is determined by the stroke length and actuation frequency.

Technical specifications

• Brand: Weilong Technology
• Model: WL7050
• Rated voltage: DC220V
• Rated power: 150–200 W
• Work mode: Push and Pull
• Holding force: 30 kg
• Stroke: 2–5 mm (customizable)
• Working duty: 10% (standard)
• Service life: approx. 200,000 cycles
• Certifications: CE, RoHS, ISO9001
• Material: superior magnet iron
• Lead wire length: 200 mm
• Install style: screw mount
• Dimension tolerance: ±0.1 mm
• Operating temperature: -10°C to 100°C
• Duty cycle range: 1–100%
• Warranty: 1 year; MOQ: 1000 pcs; Typical delivery: 30 days