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)
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	41
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.

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