MLS Series Solenoid Dosing Pump with Pulse Control
Solenoid Dosing Pump with Pulse/4–20 mA Control
The MLS Series dosing pump is a solenoid-driven diaphragm pump with microprocessor control and adjustable frequency. It can dose all types of fluids, including corrosive solutions. Widely used in oil, chemical, food, pharmaceutical, paper, light industries, agriculture, water supply, and other industrial and technological sectors for fluid dosing applications.
The operating principle involves an electromagnetic drive moving the diaphragm in reciprocating motion within the pump head, altering chamber volume and pressure. Pressure changes activate suction and discharge valves to achieve precise fluid intake and discharge. The MLS pump offers a nominal flow range of 1–20 L/h with maximum output pressure of 10–1 bar. Flow output can be adjusted via pulse frequency control. It features a simple structure, low power consumption, high accuracy, and a new screen display.
What’s the Difference Between ML and MLS Series?
The key difference lies in remote control capability. The MLS Series includes an additional signal connection for 4–20 mA or pulse signals, while the ML Series lacks this feature. All other parameters remain identical.
- Multiple signal control: 4–20 mA signal, pulse signal, RS485 data transmission.
- Simple control design — manage everything with just three buttons.
- Specifically engineered for aggressive fluids.
- Multiple material options for diverse applications.
- Adjustable flow rate in both operating and non-operating states.
- Easy air release or sampling via the air-release valve at the outlet.
- Compact modular design.
- Simple LED display.
- Double-ball check valve for easy maintenance.
- Accessories included.
- Wear-free solenoid drive with no bearings.
- New high-performance PCB. Perfectly paired with magnetic drive for high power output.
GENERAL TECHNICAL SPECIFICATIONS
| Model | MLS |
| Flow rate (L/h) | 1–20 |
| Pressure (bar) | 1–10 |
| Pump head material | Standard: PVC. Optional: PVDF, SS304, SS316 |
| Operation mode | Continuous or intermittent |
| Number of pump heads | 1 |
| Connection type | Φ5×8 Hose Compression Fitting |
| Flow adjustment method | Frequency control |
| Flow display method | Digital display |
| Remote control | Yes (4–20 mA or pulse) |
| Negative suction (m) | 2 |
| Inlet/outlet valve type | Double ball valve |
| Protection rating | IP65 |
| Insulation class | F |
| Accuracy | ±2% under stable conditions |
| Weight | Gross: 3.2 kg. Net: 4.2 kg |
| Drive type | Internal solenoid drive |
| Input power | 28 V |
| Required power supply | Single-phase 240 V 50 Hz / Single-phase 110 V 60 Hz |
| Strokes per minute | 80–180 |
DIAPHRAGM DETAILS
| Diameter (mm) | 60–84 |
| Material |
Layer 1: PTFE Layer 2: EPDM rubber Layer 3: 3.0 mm SUS304 Layer 4: Nylon fiber Layer 5: EPDM rubber |
FLUID SPECIFICATIONS
| Fluid temperature range (°C) | –15 ℃ to 60 ℃ |
| Viscosity range (cps) | 0.3 to 1000 |
ENVIRONMENTAL SPECIFICATIONS
| Ambient temperature range (°C) | –10 to +45 |
| Outdoor use | Yes, with protection from rain and direct sunlight |
STANDARD FACTORY EXPORT SET
The standard packaging of the ML/MLS Series solenoid dosing pump includes all listed items. If any item is missing or damaged, please contact your shipping company or reach out to our support team.
PRODUCT IMAGES
Three-button control interface
Pump head materials: PVC, stainless steel, PVDF
ML Series (top) vs. MLS Series (bottom)
MODEL SELECTION
| Model | Flow (L/h) | Pressure (bar) | Stroke/min | Diaphragm diameter (mm) | Weight (kg) |
|---|---|---|---|---|---|
| MLS0001 | 1 | 10 | 80 | 34 | 3.2 |
| MLS0002 | 2 | 10 | 140 | ||
| MLS0004 | 4 | 8 | 180 | ||
| MLS0005 | 5 | 5 | 140 | 41 | |
| MLS0008 | 8 | 4 | 170 | ||
| MLS0010 | 10 | 3 | 130 | 51 | 4.2 |
| MLS0012 | 12 | 2 | 150 | ||
| MLS0015 | 15 | 2 | 160 |
MATERIAL SELECTION
| Pump head material | Diaphragm | Valve seat | Valve ball | Inlet | Outlet |
|---|---|---|---|---|---|
| PVC | PTFE | Viton rubber | Ceramic | PE | PE |
| PVDF | PTFE | Viton rubber | Ceramic | PE | PE |
| SS304 | PTFE | SS304 | SS304 | SS304 | SS304 |
| SS316 | PTFE | SS316 | SS316 | SS316 | SS316 |
KEY FEATURES AND BENEFITS
- Versatile Fluid Handling: Designed for aggressive and corrosive fluids, including acids, bases, and industrial chemicals.
- Precise Dosing: ±2% accuracy under stable conditions ensures reliable fluid delivery.
- Remote Control Options: Supports 4–20 mA analog signal, pulse input, and RS485 digital communication for seamless integration into automation systems.
- Durable Construction: Available in multiple materials (PVC, PVDF, SS304, SS316) to match specific chemical compatibility needs.
- User-Friendly Interface: Three-button control and digital display simplify operation and adjustment.
- Low Maintenance: Wear-free solenoid drive and double-ball check valves reduce downtime and service costs.
- Compact Design: Space-saving modular layout fits into tight installations.
- Environmental Resilience: IP65 rating protects against dust and water jets; suitable for outdoor use with proper shelter.
APPLICATIONS
The MLS Series pump is ideal for:
- Chemical dosing in water treatment plants
- pH control in industrial processes
- Corrosive fluid transfer in petrochemical plants
- Precise additive injection in food and beverage production
- Metering of reagents in pharmaceutical manufacturing
- Nutrient dosing in agriculture and hydroponics
- Waste treatment and neutralization systems
INSTALLATION AND OPERATION GUIDELINES
- Ensure power supply matches pump specifications (1-phase 240 V 50 Hz or 1-phase 110 V 60 Hz).
- Install in a location protected from direct sunlight and rain if used outdoors.
- Verify fluid compatibility with pump materials before operation.
- Prime the pump before initial startup to avoid dry running.
- Set flow rate via frequency control using the digital interface.
- Regularly inspect valves and diaphragm for wear or damage.
- Clean internal components when switching between different fluids.
SAFETY NOTES
- Disconnect power before performing maintenance.
- Use appropriate PPE when handling corrosive fluids.
- Ensure grounding per local electrical codes.
- Do not exceed maximum pressure ratings (1–10 bar).
- Avoid operating outside specified temperature ranges (fluid: –15 ℃ to 60 ℃; ambient: –10 ℃ to +45 ℃).
ORDERING INFORMATION
To order, specify:
- Model (e.g., MLS0001, MLS0015)
- Pump head material (PVC, PVDF, SS304, or SS316)
- Power supply voltage (110 V or 240 V)
- Required accessories (if any)
CONTACT US
For technical support, spare parts, or custom configurations, please contact our sales team at:
Email: marketing@poliplast.ru
Phone: +7 8112 66-36-50