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6724 2/2 & 3/2-Way Whisper Valve
Brand: Burkert Fluid Control Systems
Many fluidic processes come closer to the point of interest. For example medical devices like dialysis machines become homecare devices and operate close to the patient. Washing units in analytical equipment are positioned on the pipetting arm or directly on the print head in printing applications. This requires special components.
Solenoid valves need to switch without noise. They need to be smaller and lighter.
Nevertheless it is essential to guarantee a long lifetime and excellent switching characteristics. All this is concerted in the Whisper Valve type 6724 and thanks to the modular structure and the range of available materials this valve is almost universal.
Features- Highest chemical resistance
- High back pressure tightness, excellent cleanability and 100% duty cycle
- Very fast, almost silent switching with < 20 dB (A) and < 1 W power consumption
Specifications
Ambient Temperature Range
- FFKM: 15° to 50° C (59° to 122° F)
- FKM, EPDM: 0° to 50° C (32° to 122° F)
Approvals & Certifications
- Suitable for Food Industry: FDA
- Oxygen Application: BAM Test Report
- Suitable for Drinking Water: KTW (W270)
Cap Material
- Liquid Crystal Polymer (LCP)
Consumption
- Power: 1 W (No Further Power Reduction Possible)
Diaphragm Material
- Medium Contact: EPDM
- Medium Contact: FFKM
- Medium Contact: FKM
Differential Pressure
- psi: 29 to 72.5 (kPa: 200 to 500, bar: 2 to 5) - Max.
Duty Cycle
- 100 % Duty Cycle Continuous Operation
Electrical Connectors
- Plug Raster 0.078” (2 mm)
Electrical Contacts
- Normally Closed
- Normally Open
Enclosure, Body Material
- Coil: Nickel-Plated
- Fluid (Medium Contact): PEEK
- Fluid (Medium Contact): Polyphenylene Sulfide (PPS)
- Valve: Liquid Crystal Polymer (LCP)
Environmental Protection
- IP40 According to IEC 60144
Flow Rate
- Air: 10.7 to 28 QNn (L/min)
- Water: 0.01 to 0.026 Kv (m³/hour)
- Water: 0.012 to 0.03 Cv (GPM)
Frequency
- Switching Noise: < 20 dB (A)
- Switching Noise: 30 dB (A)
Media
- Aggressive Gases & Liquids
Mounting Position
- Preferably with Actuator Upright
Orifice Size
- 0.03” to 0.04” (0.8 to 1.2 mm)
Power Supply
- 12 Vdc
- 24 Vdc
Pressure Range
- Vacuum - psi: -72.5 to -29 (kPa: -500 to -200, bar: -5 to -2)
Process Temperature
- FFKM: 15° to 50° C (59° to 122° F)
- FKM, EPDM: 0° to 50° C (32° to 122° F)
Response Time
- Switching Time (Opening, Closing): 3 milliseconds (Pressure Buildup 0-10 %, 100-90 %)
Seat / Seal Material
- Flange Seal: EPDM
- Flange Seal: FFKM
- Flange Seal: FKM
Solenoid Type
- 2/2-Way
- 3/2-Way
Tolerance
- Voltage: ± 10 % (Including Residual Rippler)
UNF/UNC Connection
- 1/4”-28 UNF
Viscosity
- 21 mm²/sec, Max.
