2/2 or 3/2 Way Whisper Valve Type 6724
Rated 3.5/5 based on 11 customer reviews

2/2 or 3/2 Way Whisper Valve Type 6724

Bürkert Whisper valve 6724 combines high chemical resistance, very fast and silent switching (3 ms at 30 dB(A)) and high back pressure tightness in a compact design of only 8.9 mm width.
This valve is either available with a Bürkert flange for connection to a manifold, or threaded 1/4-28 UNF version for tighter connection with fittings.
Connector with flying leads available for direct electrical connection.
Average lead time: 2 weeks
€103.30
Bürkert Whisper valve 6724 combines high chemical resistance, very fast and silent switching (3 ms at 30 dB(A)) and high back pressure tightness in a compact design of only 8.9 mm width.
This valve is either available with a Bürkert flange for connection to a manifold, or threaded 1/4-28 UNF version for tighter connection with fittings.
Connector with flying leads available for direct electrical connection.

A compact and light solenoid valve for various applications, from medical to aerospace. Thanks to its small size, it can be easily integrated into complex systems or used to manipulate low fluid volumes. The 6724 is on/off or proportional: use it as a standard 2/2 or 3/2 valve, or to control the flow rate if necessary.

  • Rocker valve with separating diaphragm
  • High chemical resistance: body in PEEK, seal in FFKM (Kalrez)
  • Compact design: 9 mm width (valve only)
  • Orifice diameter: 0.8 mm or 1.2 mm
  • Switching time of 3 ms, switching noise < 30 dB(A) and power consumption < 1 W
  • High back pressure tightness
  • Excellent cleanability
  • 100% duty cycle
  • Voltage: 24V DC
  • Port connections with Bürkert flange for the connection to a manifold or 1/4-28 UNF for easier connection to the fluidic line

See all the valve characteristics in the "Specifications" and "Documentation" tabs.

Reference  Function Orifice (mm) Port connection Kv value water (m3/h) Cv value water (gpm) QNn value air (L/min) Pressure range (bar)
299245 2/2 NC 0.8 mm Bürkert flange (9 x 26) 0.01 0.012 10.7 0 - 5
299246 2/2 NC 0.8 mm 1/4-28 UNF 0.01 0.012 10.7 0 - 5
281506

2/2 NC

1.2 mm Bürkert flange (9 x 26)
0.026 0.03 28 0 - 3
281933

2/2 NC

1.2 mm 1/4-28 UNF 0.026 0.03 28 0 - 3
300024 2/2 NO 0.8 mm Bürkert flange (9 x 26)
347565 2/2 NO 0.8 mm 1/4-28 UNF
281507 2/2 NO 1.2 mm Bürkert flange (9 x 26) 0.026 0.03 28 0 - 2
292443 2/2 NO 1.2 mm 1/4-28 UNF
299249 3/2 0.8 mm Bürkert flange (9 x 26) 0.01 0.012 10.7 0 - 3
299250 3/2 0.8 mm 1/4-28 UNF 0.01 0.012 10.7 0 - 3
276458 3/2 1.2 mm Bürkert flange (9 x 26) 0.026 0.03 28 0 - 2
280888

3/2

1.2 mm 1/4-28 UNF 0.026 0.03 28 0 - 2

 

Bürkert Whisper Valve Type 6724 Dimensions - Darwin Microfluidics

Dimensions of the Bürkert flange version (left) and 1/4-28 UNF version (right)

Body material PEEK
Seal material FFKM (Kalrez)
Media temperature +15 °C to 50 °C
Typical service life 10.000.000
Internal volume

Bürkert flange (9 x 26): approx. 38 µl

1/4-28 UNF: approx. 59 µl

Viscosity

Max. 21 mm²/s

Port connection

Bürkert flange (9 x 26) or 1/4-28 UNF

Electrical connection

Plug Raster 2 mm (socket with flying leads available)

Power supply

24 V DC

Voltage tolerance +/- 10%
Power consumption 1 W
Duty cycle 100% continuous operation
Installation As required, preferably with actuator upright
Protection class IP40 acc. IEC 60144
Response times (measured at valve outlet with air at 3 bar and +20 °C) Measurement at valve output with 2 bar and 20 °C acc. to DIN ISO 12238:2001
  • Opening: 3 ms (pressure rise 0 to 10%)
  • Closing: 3 ms (pressure drop 100 to 90%)
Switching frequency -
Switching noise 30 dB(A)
Approvals and compliance (on request)
  • Suitable for food industry: FDA
  • Suitable for drinking water: KTW (W270)
  • Oxygen application: BAM

 

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