Electromechanical Diaphragm Dosing Pump

Precision Chemical Dosing for Demanding Industrial Processes

Electromechanical diaphragm dosing pumps provide accurate, repeatable chemical metering for critical industrial applications. Using a positive displacement diaphragm driven by a robust mechanical system, these pumps deliver precise volumes per stroke, even under varying discharge pressures.

Positive displacement Repeatable metering Industrial duty drive Pressure-capable dosing

Key Features

  • Accurate, repeatable dosing — positive displacement design with adjustable stroke length and/or frequency
  • Robust electromechanical drive — motor and gearbox engineered for continuous industrial duty
  • Chemical-resistant wetted parts — materials selected for compatibility with acids, alkalis, coagulants, disinfectants, and process chemicals
  • Pressure capability — suitable for injection into pressurized lines and high backpressure systems
  • Isolated drive end — diaphragm separates the process fluid from mechanical components

Typical Applications

  • Municipal and industrial water & wastewater treatment
  • pH control, coagulation, flocculation, and disinfection
  • Chemical processing and additive dosing
  • Cooling tower and boiler water treatment
  • CIP and utility dosing in food & beverage plants (non-product contact)

Technical Considerations

For correct sizing, define the chemical, concentration, temperature, viscosity, required flow (GPH or L/h), discharge pressure, suction conditions, and desired control method (manual, 4–20 mA, pulse input, or PLC/SCADA integration). Our engineering team reviews these parameters to recommend the optimal pump configuration and materials of construction.

Need help selecting a dosing pump for your application?

Share your process details—fluid, flow, pressure, and duty cycle—and our engineering team will recommend a complete dosing solution.

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Electromechanical diaphragm dosing pump for chemical metering — corrosion-resistant liquid end with PTFE diaphragm

Electromechanical Diaphragm Dosing Pump

Designed for accurate chemical metering with strong corrosion resistance. A PTFE-faced diaphragm supports demanding chemical service and reliable sealing in dosing applications.

Chemical dosing / metering PTFE diaphragm (wetted) Corrosion-resistant liquid end 50/60 Hz ranges available
Liquid end (body)PVC (typical), chemical-resistant construction
DiaphragmMulti-layer design with PTFE-facing for chemical resistance
Valve ballCeramic or stainless steel (configuration dependent)
Sealing conceptDiaphragm-based sealing designed to reduce leakage risk
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For correct selection, provide chemical, concentration, temperature, required flow (LPH), pressure (bar), and duty cycle.

Advantages & features

  • Accurate metering: designed for controlled dosing in process lines and skids.
  • Corrosion-resistant wet end: suitable for many chemical services (verify compatibility).
  • PTFE-faced diaphragm: robust chemical resistance on the wetted side.
  • Reduced leakage risk: diaphragm-based sealing concept.
  • Precision manufacturing: supports stable operation and repeatability.
  • Valve options: ceramic or stainless steel, depending on the application.
  • Multiple ranges: model families for different flow/pressure requirements.
  • 50/60 Hz: reference data provided below.

Final configuration depends on chemical, temperature, solids content, and required dosing accuracy.

KM series — performance data (LPH / bar / rpm)
Model 50 Hz 60 Hz Diaphragm
(mm)		 Motor
(kW)
Flow
(LPH)		 Pressure
(bar)		 RPM Flow
(LPH)		 Pressure
(bar)		 RPM
KM10/1.2101248121258600.25/0.37
KM25/1.0251048301058600.25/0.37
KM50/1.05010966010115600.25/0.37
KM90/0.7907481087581120.37
KM120/0.71207481447581120.37
KM170/0.717079620471151120.37
KM240/0.724079628871151120.37
KM330/0.5330514439651731120.37
KM400/0.5400514448051731120.55
KM500/0.5500514460051731120.55
KS series — performance data (LPH / bar / rpm)
Model 50 Hz 60 Hz Diaphragm
(mm)		 Motor
(W)
Flow
(LPH)		 Pressure
(bar)		 RPM Flow
(LPH)		 Pressure
(bar)		 RPM
KS15/1.0151010018101206540/60
KS25/1.0251010030101206540/60
KS40/0.74071504871806540/60
KS60/0.66061007261208460
KS80/0.58051009651208460
KS100/0.4100415012041808460
KS130/0.4130415015641808460
KS150/0.5150415018041808460
KB series — performance data (LPH / bar / rpm)
Model 50 Hz 60 Hz Diaphragm
(mm)		 Motor
(kW)
Flow
(LPH)		 Pressure
(bar)		 RPM Flow
(LPH)		 Pressure
(bar)		 RPM
KB240/1.0240104828810581500.75
KB320/1.0320104838410581500.75
KB500/1.05001096600101151500.75
KB680/0.768079681671151500.75
KB760/0.5760514491251731500.75
KB1000/0.410004144120041731500.75
KB1200/0.41200496144041151851.1
KB1600/0.316003144192031731851.1
KB1800/0.318003144216031731851.1

Data shown as reference. Final selection must consider chemical compatibility, viscosity, temperature, suction conditions, pulsation dampening (if required), and installation details.

Typical applications

  • Chemical injection for water treatment and process skids
  • Acid/alkali dosing in tanks and pipelines
  • Neutralization and pH control systems
  • OEM dosing packages and packaged units
  • Surface treatment and cleaning lines
  • Auxiliary chemical dosing in industrial plants
  • Batch dosing with repeatable setpoints
  • General metering service (verify media)

To quote correctly, please include

  • Chemical name and concentration
  • Required flow (LPH) and discharge pressure (bar)
  • Temperature and viscosity (if known)
  • Power supply (50/60 Hz, voltage)
  • Installation details (suction lift, tank level, piping)
  • Valve/seat material preference (ceramic vs stainless)
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