Burkert Type 6724 2/2 or 3/2-way 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 materialPEEK, PPS
Seal materialFFKM, EPDM and FKM
MediumResistant to neutral and aggressive gases and liquids (see Bürkert resistance chart)
Media temperatureFFKM: +15…+50 °C (59…122 °F) | FKM: 0…+50 °C (32…122 °F) EPDM: 0…+50 °C (32…122 °F)
Ambient temperatureFFKM: +15…+50 °C (59…122 °F) | FKM: 0…+50 °C (32…122 °F) EPDM: 0…+50 °C (32…122 °F)
Typical service life10.000.000 (acc. to laboratory duration tests)
Internal volumeFluid chamber 28 µl / Total (incl. connection) 38 µl
Viscositymax. 21 mm2 /s
Port connectionflange; UNF ¼-28
Electrical connectionPlug Raster 2 mm
Power supply12 V DC; 24 V DC (other voltages on request)
Voltage tolerance±10% (incl. Residual rippler)
Power consumption1 W
Duty cycle100% continuous operation
InstallationAs required, preferably with actuator upright
Protection classIP40 acc. to IEC 60144
Switching frequency-
Switching noise30 dB (A) /

Response times




Measurement at valve output with 2 bar and 20 °C acc. to DIN ISO 12238:2001

3 ms (pressure build-up 0…10%)

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-usa.com