Chemical Liquid Pump Automatic Polymer Dosing System Mechanical Diaphragm Metering Pump

• Customization: Available
• After-sales Service: Yes
• Warranty: 1 Year
• Model NO.: SJM series
• Certification: ISO9001:2008, ISO9001:2000
• Rated Current: 5-10A
• Voltage: 380V
• Material: Stainless Steel
• Power: Electric
• Valve Body Type: Diaphragm
• Function: Solenoid Valve, Electronic Type
• Diaphragm Material: PTFE
• Performance: No Leak
• Driver: Motor
• Maxi Capacity: 3898L/H
• Maxi Discharge Pressure: 0.8 MPa
• Steady State Accuracy: +-1%
• Transport Package: Standard Export Package
• Specification: SJM
• Trademark: Weford
• Origin: China
• HS Code: 841350
• Production Capacity: 5000 Sets

Product Description

Mechanical Diaphragm Metering Pump

Weford metering pump is designed according to the international API675 standard, with many patents that have always reached the world's advanced level. The product meets extremely demanding working conditions and can accurately and reliably transport materials, meeting the high requirements of this type of pump product.Our metering pump can replace BRAN+LUEBBE pump, LEWA pump,Prominent pump,MiltonRoy pump and Pulsafeeder pump.
Mechanical Diaphragm Metering Pump

Main Parameters:

Model: SJM series

 Rated flow rate: 4-3898L/h.

Maximum rated pressure: 0.8 MPa.

The temperature of the conveying medium is  -30~50 ºC (100 ºC for stainless steel).  

Medium viscosity: 0.3~800mm2/S.  

Measurement accuracy ≤ ± 2%.




Mechanical diaphragm metering pump is a precision fluid conveying equipment, mainly used in situations where precise control of flow and pressure is required. This pump uses a diaphragm to isolate the medium from the driving mechanism, ensuring cleanliness and safety during the transportation process. The following are some of the main application areas of mechanical diaphragm metering pumps:

1. Chemical industry: In the chemical production process, mechanical diaphragm metering pumps are used to accurately add various chemical agents, such as acids, bases, solvents, etc.
2. Pharmaceutical industry: Accurate measurement of drug ingredients is crucial in drug manufacturing. Mechanical diaphragm metering pumps can meet this requirement, ensuring accurate proportions of drug ingredients.
3. Food industry: In the food processing, mechanical diaphragm metering pumps can be used to accurately add seasonings, pigments, or other additives to ensure the consistency and safety of food.
4. Water treatment: In water treatment facilities, mechanical diaphragm metering pumps are used to add chemicals such as coagulants and disinfectants to purify water quality.
5. Oil and natural gas: In the process of oil and gas field extraction and transportation, mechanical diaphragm metering pumps can be used to accurately add chemical substances such as scale inhibitors and corrosion inhibitors.
6. Environmental engineering: In the fields of wastewater treatment and exhaust gas purification, mechanical diaphragm metering pumps also play an important role in helping to achieve effective removal of pollutants.
7. Scientific research experiments: In laboratory environments, mechanical diaphragm metering pumps are often used to precisely control the amount of reactants added, supporting scientific research and product development work.