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 subbase 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.
Available within 1 week
€88.70
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 subbase 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.

Whisper Valve Type 6724

  • High chemical resistance: body in PEEK, seal in FFKM (Kalrez)
  • Compact design: 8.9 mm width
  • Orifice size 1.2 mm
  • Pressure range: vacuum up to 3 bar for the 2/2 way version, vacuum up to 2 bar for the 3/2 way version
  • Switching time of 3 ms, switching noise < 30 dB(A) and power consumption < 1 W
  • High back pressure tightness
  • Excellent cleanability
  • 100% duty cycle
  • Available in both 2/2 way (normally closed) and 3/2 way versions 24V DC
  • Port connections with subbase for connection to a manifold or 1/4-28 UNF for easier connection to the fluidic line

Characteristics

  • Rocker valve with separating diaphragm
  • Body in PEEK, seal in FFKM (Kalrez) for broad chemical compatibility
  • 24V DC voltage
 Circuit function Orifice (mm) Port connection Kv value water (m3/h) Cv value water (gpm) QNn value air (L/min) Pressure range (bar) Max. pressure difference (bar)
2/2 Way NC Valve Schematic - Darwin Microfluidics

2/2 way (normally closed)

1.2 mm Subbase 0.026 0.03 28 vacuum up to 3 3

2/2 Way NC Valve Schematic - Darwin Microfluidics2/2 way (normally closed)

1.2 mm 1/4-28 UNF 0.026 0.03 28 vacuum up to 3 3
3/2 Way Valve Schematic - Darwin Microfluidics

3/2 way

1.2 mm Subbase 0.026 0.03 28 vacuum up to 2 2

3/2 Way Valve Schematic - Darwin Microfluidics3/2 way

1.2 mm 1/4-28 UNF 0.026 0.03 28 vacuum up to 2 2

Dimensions

 Bürkert Whisper Valve Type 6724 Dimensions - Darwin Microfluidics

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

 

Specifications

Orifice and pressure range

2/2 way version: 1.2 mm, vacuum up to 3 bar

3/2 way version: 1.2 mm, vacuum up to 2 bar

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

Fluid chamber: 28 µL

Total (incl. connections): 38 µL

Viscosity

Max. 21 mm²/s

Port connection

Flange 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

Payment Terms

You can either order and pay via credit card or invoice (through a purchase order). Please note that some products are not available for direct purchase: just click "Request a Quote" on the product page and fill in the form to get more informations!

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  • That's it! You will receive an order confirmation within a few minutes, and our team will send you the invoice.

Invoice

  • Add your products to the cart
  • In the website header, click on Request a Quote
  • Fill in the required informations, then click on Submit Quote
  • Our team will send you a quote shortly
  • After receiving the quote, just send your purchase order at contact@darwin-microfluidics.com
  • Our team will complete your purchase and send you the invoice!

If you wish to pay in USD, AUD or GBP, please specify it in your PO. We can add the converted value in the required currency to the quote if requested.

 

Worldwide shipping

We ship worldwide from our warehouse in France.

The shipping charges are calculated based on the weight of the package and the country of destination: you can estimate the shipping cost on the cart page. We try to offer you the best shipping rates and services, shipping all our orders through DHL Express. Generally, your order reaches your lab in only 2 to 3 days after we send it, no matter the destination! 

Please note that our shipping incoterms are DAP (Delivered At Place). Please contact us if you prefer using your own courrier account or have any question!

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