Burkert Type 6724 Whisper Valve

Many fluidic processes moving closer to where they are actually required. In the field of medical devices, for example, treatments such as dialysis can be provided to patients in convenient surroundings at home. Washing units in analytical equipment are positioned on the pipetting arm or directly on the print head in printing applications.

This imposes different requirements on the components used. Solenoid valves must be able to switch without being heard. They need to be smaller and lighter to be used in mobile devices. However, their ability to achieve a long service life and excellent switching characteristics is every bit as important.

The Whisper Valve Type 6724 combines all of these traits and, thanks to its modular structure and range of available material variants, this valve is universally applicable. This product can be combined with Pressure Controller Type 8763 and Cable Plug Type 2503.


  • Highest chemical resistance
  • Compact design with 8.9 mm installation width
  • DN 0.8 mm (vacuum up to 5 bar) and 1.2 mm (vacuum up to 3 bar)
  • Very fast, almost silent switching with < 20 dB (A) and very low power consumption
  • High back-pressure tightness, excellent cleanability and 100% duty cycle


Technical Data

Orifice size / pressure range DN0.8 mm / vacuum to 5 bar
DN1.2 mm, 2/2 way / vacuum to 3 bar
DN1.2 mm, 3/2 way / vacuum to 2 bar
Body material PEEK, PPS
Seal material FFKM, EPDM and FKM
Medium Resistant to neutral and aggressive gases and liquids (see Bürkert resistance chart)
Media temperature FFKM: +15…+50 °C (59…122 °F) | FKM: 0…+50 °C (32…122 °F) EPDM: 0…+50 °C (32…122 °F)
Ambient temperature FFKM: +15…+50 °C (59…122 °F) | FKM: 0…+50 °C (32…122 °F) EPDM: 0…+50 °C (32…122 °F)
Typical service life 10.000.000 (acc. to laboratory duration tests)
Internal volume Fluid chamber 28 µl / Total (incl. connection) 38 µl
Viscosity max. 21 mm2 /s
Port connection flange; UNF ¼-28
Electrical connection Plug Raster 2 mm
Power supply 12 V DC; 24 V DC (other voltages on request)
Voltage tolerance ±10% (incl. Residual rippler)
Power consumption 1 W
Duty cycle 100% continuous operation
Installation As required, preferably with actuator upright
Protection class IP40 acc. to IEC 60144
Switching frequency
Switching noise 30 dB (A) /
Response times Measurement at valve output with 2 bar and 20 °C acc. to DIN ISO 12238:2001
Opening 3 ms (pressure build-up 0…10%)
Closing 3 ms (pressure build-up 100…90%)
Approvals and compliance (on request) Suitable for food industry: FDA
Suitable for drinking water: KTW (W270)
Oxygen application: BAM

Download Datasheet: Burkert Type 6724 2/2 or 3/2-way Whisper Valve

Reference : burkert.com

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