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Bürkert - Close to you
Office /3
    • Main Office
      Burkert South Africa (PTY) Ltd
      Visitors address:

      233 Albert Amon Road
      Millennium Business Park
      Meadowdale / Germiston

      Mailing address:

      P.O. Box 26260
      East Rand
      Phone +27 11 574 6000
      Fax +27 11 454 1477
    • Office
      Durban Branch
      32 Grays-Inn Crescent

      Phone +27 31 266 1600
      Fax +27 31 266 1495
    • Office
      Cape Town Branch
      Unit 26, Northgate Business Park
      Northgate Estate

      Phone +27 21 510 7137
      Fax +27 21 510 7135
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Time-Pressure Dosing

For more precision

Your benefit

  • Expert advice thanks to many years of experience in microfluidic dosing
  • Broad selection of suitable components of the highest quality
  • Precise regulation with high switching frequency
  • Components with long life cycle and excellent cleanability
  • Flexible dosing processes, adapted to your application

To achieve reliable measurement results in a laboratory environment, the exact dosing of samples, reagents and cleaning agents is essential. This is why time-pressure dosing can be ideal for you, as it enables individually and precisely adjustable dosing volumes over a defined period. Bürkert micro-valves are designed to maintain dosing speeds and precision and can guarantee a high level of reproducibility and repeatability. The dosing volume is individually adjustable and provides the user with greater flexibility in the dosing process.

Principle of proceeding

In-time-pressure dosing the medium is stored in a pressurized tank and is carried through a valve to the dosing needle. Parameters such as tank pressure, flow resistance, product viscosity and temperature of the medium are carefully controlled. The valve controls the flow of the medium by either opening or closing the stream of flow for a defined amount of time per switching cycle. Since the medium is driven by air pressure instead of a pumping mechanism, the process does not contain any mechanical moving parts in the stream of the medium.

Time-Pressure Dosing


Time-Pressure Dosing



A coil always heats up during operation. To protect the medium from this heat, Bürkert valves are media separated, which means the coil and fluid chamber are separated by a diaphragm, which isolates the medium. In addition, the valves are available with integrated power reduction to reduce the heat output of the coil even more.

Applications using Time-Pressure Dosing

Products for Time-Pressure Dosing

2/2 or 3/2 way Flipper-Solenoid Valve with separating diaphragm

2/2 or 3/2 way Flipper-Solenoid Valve with separating diaphragm

Type 6650

  • Only 4.5mm wide
  • Medium isolation, for aggressive fluids
  • Direct-acting
  • Vacuum up to 7 bar
  • Short response times
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2/2 way Whisper Valve with media separation

2/2 way Whisper Valve with media separation

Type 6712

  • Highest chemical resistance with minimal internal volume
  • Compact design with 7 mm width
  • Orifice size 0.8 mm (3 bar) and 0.4 mm (5 bar)
  • Switching noise < 36 dB
  • For dosing applications with excellent flush ability
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2/2 or 3/2 way Whisper Valve  with media separation

2/2 or 3/2 way Whisper Valve with media separation

Type 6724

  • Highest chemical resistance
  • Compact design with 8.9 mm width
  • Orifice size 0,8 mm (vacuum up to 5 bar [72,52psi]) and 1.2 mm (vacuum up to 3 bar [43.51psi])
  • Very fast, almost silent switching with < 20 dB (A) and < 1 W power consumption
  • High back pressure tightness, excellent cleanability and 100% duty cycle
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3/2 way Flipper Solenoid Valve, direct acting

3/2 way Flipper Solenoid Valve, direct acting

Type 6144

  • Direct-acting
  • 0 to 10 bar
  • Low power consumption
  • Sub-base connection
  • 10mm width per station
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Micro Dosing Unit for precise dosing in microlitre-range

Micro Dosing Unit for precise dosing in microlitre-range

Type 7615

  • Diaphragm pump for high chemical resistance
  • Dosing volume 5 µl/stroke up to 8 ml/min. in both directions
  • Dosing accuracy < +/- 3,5 %
  • Self priming
  • Integrated electronics, easy to use
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Product Overview MicroFluidics

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More principles of dosing

Syringe Pump Dosing

For precise results

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Volumetric Dosing

The solution for continuous dosing applications

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