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Diaphragm Metering Pump/Dosing Pump
Diaphragm Metering Pump/ Dosing Pump
Diaphragm Metering Pump (Dosing Pump) is a device for the precise control of fluid flow,which used instead of a piston to change the volume of the pump chamber to increase and decrease the pressure of the internal fluid.
●  Diaphragm structure
●  Type of Diaphragm Pump
●  Comparison of diaphragm dosing pump
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Different from the traditional piston drive design,
the diaphragm metering pump
uses a diaphragm made of elastic material to replace the piston movement, 
and realizes the process of suction and discharge of fluid through the reciprocating motion under the action of the driving mechanism, 
and controls the flow rate in a highly accurate way.

WHAT'S THE DIFFERENT TYPE OF DIAPHRAGM METERING PUMP?

SD SOLENOID METERING PUMP

Solenoid-Metering-Pump
● With the automatic input voltage recognition function
● The voltage can be used arbitrarily under 100-240V AC
● The maximum flow rate is 30L/H and the maximum pressure is 1.5MPa
● Be capable of up to 400 SPM,providing efficient and highly accurate fluid delivery
● Output flow can be manually adjusted, or the external pulse signal or 4-20mA signal
● The diaphragm is made of pure PTFE material and is compatible with most chemicals
● PVDF pump head/ceramic ball valve can be adapted to different corrosion environments
● Import and export adopt double valve structure, high measurement accuracy, long life
AS-Solenoid-Metering-Pump

AS Series Electromagnetic Diaphragm Metering Pump

●Maximum discharge:0.8-20 L/H
●Maximum pressure:0.1-1.5MPa
●Maximum stroke length:1-1.2 mm
●Maximum SPM:75-330 SPM
●Diaphragm diameter:φ36-45mm
AE-Solenoid-Metering-Pump

AE Series Electromagnetic Diaphragm Metering Pump

●Maximum discharge:3-30 L/H
●Maximum pressure:0.15-1.5MPa
●Maximum stroke length:1.2-1.5 mm
●Maximum SPM:115-330 SPM
●Diaphragm diameter:φ45-55mm

SD Mechanical Diaphragm Metering Pump

Mechanical-diaphragm-metering-pump
● The error in flow control is very small
● Working under high pressure
● Suitable for many types of liquids
● The diaphragm is made of pure PTFE material
● The diaphragm design helps prevent the fluid in the pump contact with the mechanical parts
● Working parameters can be adjusted at will to meet different flow and pressure requirements
AW-Mechanical-diaphragm-metering-pump

AW Mechanical Diaphragm Metering Pump

● Maximum discharge: 6.5-150 L/H
● Maximum pressure:0.3-1MPa
● Maximum stroke length:2-5 mm
● Maximum SPM: 75-150 SPM
● Diaphragm diameter:φ65 -94mm
● Driven by a reducer motor with a gearbox
● Easy to install without lubricating oil.
● Use PTFE membrane with composite structure
AX-Mechanical-diaphragm-metering-pump

AX Mechanical Diaphragm Metering Pump

● Maximum discharge: 2.25-500 L/H
● Maximum pressure:0.5-1.2MPa
● Maximum stroke length:1.2-10 mm
● Maximum SPM: 36-180 SPM
● Diaphragm diameter:φ36 -110mm
● With reliable sliding shaft adjustment structure
● Change the lubricating oil regularly
● High precision check valve structure, good sealing
● Equipped with ordinary/variable frequency motor and digital controller to receive 4-20MA signal or RS485 signal
AXB-Mechanical-diaphragm-metering-pump

AXB Mechanical Diaphragm Metering Pump

● Maximum discharge: 82-1200 L/H
● Maximum pressure:0.35-1MPa
● Maximum stroke length:1.2 mm
● Maximum SPM: 36-180 SPM
● Diaphragm diameter:φ70 -162mm
● Adopt double eccentric CAM structure drive
● Change the lubricating oil regularly
● High precision one-way check valve structure
● High-strength PTFE and rubber composite diaphragm
ADZ-Mechanical-diaphragm-metering-pump

AD/Z Mechanical Diaphragm Metering Pump

● Maximum discharge: 750-3000 L/H
● Maximum pressure:0.3-0.6MPa
● Maximum stroke length:15-20 mm
● Maximum SPM: 72-108 SPM
● Diaphragm diameter:φ140-240mm
● Adopt double eccentric CAM structure drive
● Change the lubricating oil regularly
● High precision one-way check valve structure
● PTFE and rubber composite diaphragm

COMPARISON OF SOLENOID DIAPHRAGM PUMP

& MECHANICAL DIAPHRAGM DOSING PUMP

 

Working Principle

Precision

Adjustability

Durability

Operating Mode

Solenoid diaphragm pump

Rely on electromagnetic

force to drive

Normal

 

By controlling the solenoid on/off cycle and

pulse frequency to adjust

 

Limitations in high-pressure applications

Intermittent

Mechanical diaphragm dosing pump

Mechanical mechanisms

 (such as cams, 

gears or pistons)

Excellent

 

Adjustable height, 

optional control of stroke length and stroke frequency

 

Can operate under high pressure

Continuity

THE ADVANTAGES OF DIAPHRAGM METERING PUMP

High accuracy

Be capable of delivering liquids at very precise rates, often with very small errors in flow control.

Highly adjustable

Adjustable operating parameters, such as displacement, pressure, and operating frequency.

Durability

Usually made of high-quality materials and have a long service life.

High pressure capability

Be capable of operating under high pressure, making them suitable for applications.

Liquid isolation

The diaphragm design helps prevent the liquid in the pump contact with the mechanical parts.
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APPLICATION OF DIAPHRAGM DOSING PUMP

diaphragm-metering-pump-in-water-treatment

Water treatment

Used to add chemicals such as disinfectants, reservoir treatment agents, corrosion inhibitors and pH regulators to improve tap water quality, wastewater treatment and industrial water treatment.
diaphragm-metering-pump-in-Chemical-processing
  • Chemical processing
It is used to add precise chemicals, solvents and reagents to the chemical production process, ensuring precise control and consistency of the production process.
diaphragm-metering-pump-in-pharmaceutical-

Pharmaceutical industry

In the pharmaceutical process, it is used to precisely add pharmaceutical ingredients, diluents and additives to ensure the quality and safety of pharmaceutical preparations.
diaphragm-metering-pump-in-food-factory

Food and beverage industry

Used to add flavorings, additives, colors and preservatives to ensure consistency and quality of food and beverages.
diaphragm-metering-pump-in-oil-and-gas-industry

Oil and gas industry

Used to add treatment agents, desulfurizers, desalinizers and additives to improve the efficiency and safety of oil and gas production and processing.
diaphragm-metering-pump-in-environment-protect

Environmental protection

Used to monitor and treat wastewater, sewage and industrial waste fluids to ensure environmental compliance and reduce pollution.
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