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.
Whisper Valve Type 6724
- 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 forthe connection to a manifold or 1/4-28 UNF for easier connection to the fluidic line
- Rocker valve with separating diaphragm
- Body in PEEK, seal in FFKM (Kalrez) for broad chemical compatibility
- 24V DC voltage
|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|
|1.2 mm||Bürkert flange (9 x 26)
||0.026||0.03||28||0 - 3|
|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|
|1.2 mm||1/4-28 UNF||0.026||0.03||28||0 - 2|
More information in the brochure.
Dimensions of the Bürkert flange version (left) and 1/4-28 UNF version (right)
|Seal material||FFKM (Kalrez)|
|Media temperature||+15 °C to 50 °C|
|Typical service life||10.000.000|
Bürkert flange (9 x 26): approx. 38 µl
1/4-28 UNF: approx. 59 µl
Max. 21 mm²/s
Bürkert flange (9 x 26) or 1/4-28 UNF
Plug Raster 2 mm (socket with flying leads available)
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
|Switching noise||30 dB(A)|
|Approvals and compliance (on request)||
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