ML Series Solenoid Diaphragm Dosing Pump
The ML Series dosing pump is a solenoid-driven diaphragm pump with microprocessor control and adjustable frequency. It is capable of dosing all types of solutions, including corrosive fluids. 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 pusher driving 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 ML 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 for electromagnetic diaphragm dosing.
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.
- Compact size and easy installation.
- 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 | ML |
| 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 | No |
| 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 | -15 ℃ to 60 ℃ |
ENVIRONMENTAL PARAMETERS
| Ambient temperature range | -10 ℃ to +45 ℃ |
| Outdoor use | Yes, with shelter protection from rain and direct sunlight |
STANDARD FACTORY EXPORT SET
The standard packaging of the ML/MLS Series solenoid dosing pump includes all items listed below. If any item is missing or damaged, please contact your shipping company or reach out to our support team.
Product Images
Three-button control
PVC, stainless steel, PVDF pump head
ML Series (top), MLS Series (bottom)
Model Selection
| Model | Flow rate (L/h) | Pressure (bar) | Strokes/min | Diaphragm diameter (mm) | Weight (kg) |
|---|---|---|---|---|---|
| ML0001 | 1 | 10 | 80 | 34 | 3.2 |
| ML0002 | 2 | 10 | 140 | ||
| ML0004 | 4 | 8 | 180 | ||
| ML0005 | 5 | 5 | 140 | 41 | |
| ML0008 | 8 | 4 | 170 | ||
| ML0010 | 10 | 3 | 130 | 51 | 4.2 |
| ML0012 | 12 | 2 | 150 | ||
| ML0015 | 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 |
Dimensions (mm)
| Model | Pump head material | Connection | A | B |
|---|---|---|---|---|
| ML0001–ML0020 | PVC | Φ5×8 PE Hose Compression Fitting | 18 | 175 |
| — | PVDF, SS304/SS316 | — | 17 | 158 |
Key Features
- Compact size and lightweight design.
- Flow rate: 1–20 L/h.
- Pressure range: 1–10 bar.
- Power supply: 220 V, 50 Hz (single-phase).
- Protection class: IP65.
- Multiple flow path materials: PVC, PVDF, stainless steel 316L.
- Includes system connection accessories (for PVC and PVDF heads): bottom valve, injection valve, air valve, PE flexible tubes, ceramic weight.
- LCD display showing performance in percentage (ML and MLS models).
- LED display with flow rate in L/h, current performance, and accumulated flow (EML models).
- Drain hole to alert user in case of diaphragm damage, preventing fluid from entering the pump housing.
Control and Signalling
- ML Series: manual control only (three buttons).
- MLS Series: manual, 4–20 mA signal, or pulse signal.
- EML Series: manual, 4–20 mA, pulse signal, or Modbus RTU protocol.
Application Areas
The ML Series solenoid diaphragm dosing pump is ideal for:
- Chemical industry
- Pharmaceutical production
- Food processing
- Water treatment and supply
- Agriculture
- Oil and gas sector
- Paper and light industries
Safety and Compliance
- Insulation class: F.
- Protection rating: IP65 (dust- and water-resistant).
- Compliance with international safety standards.
Ordering Information
When ordering, please specify:
- Model (e.g., ML0001, ML0010, etc.)
- Pump head material (PVC, PVDF, SS304, SS316)
- Power supply requirements (220 V 50 Hz or other)
- Accessories needed (if any beyond standard set)
For detailed chemical compatibility tables or technical support, please contact us.