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MB Series Dosing Pumps

MB Series Dosing Pumps

MOTOR-DRIVEN DOSING PUMP

The MB series dosing pump is a positive displacement piston dosing pump with a mechanical drive. It is widely used in industrial and scientific fields such as petrochemical, chemical, food, pharmaceutical, paper, light industry, agriculture, environmental protection in water bodies, etc., and is responsible for measuring and adding various media during the process. Various pump head materials are available to handle different types of liquids. The standard configuration is PVC material; other materials such as 304, 316, and PVDF are also available.

MB series dosing pumps can handle corrosive or non-corrosive liquids without solid particles within the temperature range of -15 °C to 60 °C and viscosity range of 0.3–1000 cps. The nominal flow rate of the pump is from 10 to 1800 L/h, and the corresponding maximum output pressure is from 10 to 1 bar. The pump flow rate is adjusted by rotating the handwheel, and the adjustment can be made from 0 % to 100 % regardless of whether the pump is running or not. The steady-state accuracy is ±1 % within the flow range of 30 % to 100 %. This is a dosing pump with a simple design, low power consumption, accurate measurement, and practicality. Various types of dosing pumps can be equipped with explosion-proof motors or variable frequency motors upon customer request.

Features

  • High flow capacity — up to 1800 L/h.
  • Non-hermetic design.
  • Smooth flow adjustment in both operating and non-operating states.
  • Specifically designed for handling aggressive liquids.
  • Various material options for different applications.
  • Adjustable flow in both operating and non-operating states.
  • Robust and reliable — designed for heavy-duty applications.
  • Compact modular design.
  • Dosing accuracy of ±1 % within 10–100 % of the nominal flow rate.
  • Double-ball check valve for easy maintenance.
  • Easy replacement of parts.
  • Multi-layer diaphragm for extended service life.

GENERAL PUMP SPECIFICATIONS

Model MB
Type Mechanical diaphragm with motor drive
Flow rate (L/h) 240–1800
Pressure (bar) 10–3
Pump head material Standard: PVC. Optional: PVDF, SS304, SS316
Operation mode Continuous or intermittent
Number of pump heads 1
Connection type Adhesive connection / Welded connection
Flow adjustment method Adjustable handwheel
Flow adjustment display method Analog display
Remote control With optional ON/OFF drive
Suction lift (m) 3
Number of valve balls One
Strokes per minute 48–144
Accuracy ±1 % at 30–100 % flow rate
Weight (kg) Gross weight: 34 kg. Net weight: 37 kg

DRIVE SPECIFICATIONS

Standard motor IEC STANDARD MOTOR. Power: 0.3 kW. Voltage: 220 V/380 V, 4P 3ph 50 Hz. Protection: IP55 / Class F / TEFC
Optional motors (on request) IEC VFD / EXD / VFD + EXD MOTOR. Voltage: 220 V/380 V, 4P 3ph 50 Hz. Protection: IP55 / Class F / TEFC

ENVIRONMENTAL SPECIFICATIONS

Fluid temperature range (°C) -15 to 60
Fluid viscosity range (cps) 0.3–1000
Ambient temperature range (°C) -30 to 80
Outdoor use Yes, provided it is sheltered from rain and direct sunlight

DIAPHRAGM DETAILS

Diameter (mm) 148–185
Material Layer 1: PTFE
Layer 2: EPDM rubber
Layer 3: 3.0 mm SUS304
Layer 4: Nylon fiber
Layer 5: EPDM rubber

Product Images

MB Series Pump with PVC Pump Head

PVC Pump Head

MB Series Pump with PVDF Pump Head

PVDF Pump Head

MB Series Pump with Stainless Steel Pump Head

SS304/316 Pump Head

Model Selection

Model Strokes per minute (min⁻¹) Nominal flow rate (L/h) Nominal pressure (bar) Nominal power (W) Connection type
(PVC) (PVDF) (SS316)
MB0250 48 250 10 0.75 DN25 Adhesive connection RC 1″ NPT internal thread RC 1″ NPT internal thread
MB0320 48 320 10
MB0500 96 500 10
MB0680 96 680 7
MB0760 144 760 5
MB1000 144 1000 4
MB1200 96 1200 4 1.1 DN40 Adhesive connection RC 1 1/2″ NPT internal thread RC 1 1/2″ NPT internal thread
MB1600 144 1600 3
MB1800 144 1800 3

Material Selection

Pump Head Material Valve Body Valve Seat Valve Ball Diaphragm O‑Rings Inlet/Outlet
PVC PVC PVC Ceramic PTFE Viton PVC
PVDF PVDF PVDF Ceramic PTFE Viton PVDF
SS304 SS304 SS304 SS304 PTFE PTFE SS304
SS316 SS316 SS316 SS316 PTFE PTFE SS316

For detailed chemical compatibility tables, please refer to the manufacturer’s documentation.

Dimensions

Product dimensions for MB Series Motor‑Driven Diaphragm Dosing Pump with PVC Pump Head:

Model Pump Head Material Connection A (mm) B (mm) C (mm) D (mm) E (mm)
MB0240–MB1000 PVC DN25 Glue Union 310 180 143 416 525
PVDF RC 1″ Female NPT 273 180 144 414 525
SS304/316 RC 1″ Female NPT 280 180 135 390 525
MB1200–MB1800 PVC DN40 Glue Union 410 220 153 431 560
PVDF RC 1 1/2″ Female NPT 342 220 150 437 560
SS304/316 RC 1 1/2″ Female NPT 368 220 139 401 560

Installation Guidelines

  • Site Selection: Choose a level, stable surface protected from direct sunlight and precipitation. Ensure adequate ventilation for motor cooling.
  • Foundation: For models MB1200–MB1800, secure the pump to a solid foundation using mounting bolts (M12 recommended). Smaller models (MB0240–MB1000) may be surface-mounted with vibration isolation pads.
  • Piping:
    • Use compatible materials per fluid type (PVC, PVDF, or stainless steel).
    • Install isolation valves on inlet/outlet lines.
    • Ensure no stress or tension on pump connections.
    • For suction lines > 3 m, use a foot valve and prime the pump before startup.
  • Electrical:
    • Connect to a dedicated circuit with overcurrent protection (see motor specs).
    • Ground the motor per IEC 60364 standards.
    • For VFD/EXD motors, follow manufacturer wiring diagrams.
  • Initial Startup:
    1. Fill pump head with fluid to prime diaphragm.
    2. Open inlet/outlet valves slowly.
    3. Run at 0 % stroke for 5 minutes to purge air.
    4. Gradually increase flow rate while monitoring pressure.

Maintenance Schedule

Component Check Interval Action
Diaphragm Every 6 months Inspect for cracks/wear. Replace if PTFE layer is compromised.
Valve Balls/Seats Every 3 months Clean with compatible solvent. Replace if pitted or scored.
O‑Rings Annually Replace if hardened or deformed.
Motor Bearings Every 2 years Lubricate per IEC 60034-14. Replace if noisy.
Electrical Connections Semi‑annually Tighten terminals. Check insulation resistance.

Troubleshooting

Symptom Possible Cause Solution
Low Flow Rate Air in pump head Prime pump. Bleed air via vent valve.
Worn valve balls/seats Replace valves.
Excessive Noise Loose mounting Tighten foundation bolts.
Bearing failure Replace motor bearings.
Leakage at Head Damaged diaphragm Replace diaphragm assembly.
Motor Overheating Overloaded pump Reduce flow rate. Check fluid viscosity.

For detailed service procedures, refer to the MB Series Service Manual (Document #SM‑MB‑2023).

Contact Support:
Email: marketing@poliplast.ru
Phone: +7 (8112) 66-39-06