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2/2 Way Microfluidic Whisper Valve Type 6712

A compact microfluidic solenoid valve combining an internal volume of only 5 µL (incl. connectors), small dimensions and quiet switching with a response time of only 1 ms, for almost zero unused fluid and a reduced chance of contamination.
A separating diaphragm between the fluid and actuator gives maximum chemical resistance, making this valve a premium for a wide range of laboratory, medical and analysis applications.
Comes in a 2-way normally closed valve setup, with an optional 1/4-28 UNF manifold for easier connection.
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76.10€ - 96.00€
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Bürkert

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General

The Bürkert 6712 whisper valve was developed for applications where compactness, precision at low flows, and reliability are required.

  • 2/2 way normally closed valve, 24V DC
  • Ultra-compact size (width 7 mm) and low dead volume of only 5 µL (including connections)
  • Response time of less than 1 ms for opening and closing
  • Quiet switching of 36 dB(A) for sensitive environments
  • PEEK body with FFKM (Kalrez) seal
  • For easier connection, the valve can be connected to a standard 1/4-28 UNF manifold in PEEK
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BU-267651 BU-00273235

Benefits

Maximum precision

In the world of microfluidics, precision and reproducibility are must-haves. Bürkert microvalves have been able to meet these demands through innovation solutions and precise manufacturing standards to provide devices that are both high performance and long-lasting. Control dosing volume with the utmost precision with a switching speed of 1 ms.

Droplet generation

Create microfluidic droplets without the complicated flow control thanks to the high frequency switching that this valve is capable of.

Excellent cleanability

Cross-contamination can be a serious issue in microfluidics, particularly when working with biological media.  Thanks to their low dead volume designs, optimized flow paths, and precision molding, Bürkert has ensured that their microvalves are easily cleanable. Utilizing a diaphragm to separate the media from the actuation mechanism, this valve maintains this commitment to cleanability.

Low internal volume

When material costs are high, they should be used more efficiently. By minimizing the internal volume of their valves, Burkert not only improves their cleanability, but also facilitates the most efficient use of precious fluid resources.  This microvalve is second to none, with a total internal volume of only 5 µL, for applications where material costs are high and the utmost precision and efficiency are needed.

Outstanding chemical resistance

Whether you're working with strong acids, concentrated solvents, or cell suspensions, Burkert microvalves are manufactured in close concert with their chemical laboratories to ensure their materials are being used to ensure chemical resistance in the most critical of applications. With PEEK body and FFKM seal this valve has a great chemical compatibility.

Low heat transfer to the medium

By keeping the actuating solenoid and the fluid chamber separate in their microvalves, Bürkert minimizes the uncontrolled heat transfer into the fluid medium. Additionally, low microvalve power consumption helps reduce heat production.  

Specifications

      

2/2 Way Whisper Valve Dimensions

1/4-28 UNF Manifold Dimensions

 

Orifice and pressure range 0.8 mm, 0-3 bar
Back pressure Max. 1.2 bar
Body material

PEEK

Seal material

FFKM

Media temperature

+10 to +55 °C (FFKM version)

Typical service life 30.000.000 h
Internal volume

Fluid chamber: 2 µL

Total (incl. connections): 5 µL

Viscosity

Max. 21 mm²/s

Electrical connection

Single flying leads, AWG 26, 500 mm

Power supply

24 V DC

Voltage tolerance +/- 10%
Power consumption 0.9 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) FFKM version:
  • Opening: 0.7 ms (pressure rise 0 to 10%)
  • Closing: 1.0 ms (pressure drop 100 to 90%)
Switching frequency 50 Hz
Switching noise 36 dB(A)
Approvals and compliance on request
  • Suitability for drinking water: KTW (W270)
  • Suitability for foodstuffs: FDA

Your Question Answered

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Darwin Microfluidics being based in France, ships orders under Delivered At Place (DAP) incoterms. This means that for customers outside the European Union (EU), you are responsible for any applicable customs fees, duties, and taxes in addition to the shipping costs. These charges are determined by your local customs authority and must be paid by you upon the arrival of the shipment in your country.

We recommend contacting your local customs office for detailed information on these charges if you're ordering from outside the EU, as they can vary depending on the destination and the value of your order. Please note that these additional costs are not included in the shipping fees charged by Darwin Microfluidics.

If you've received your order from Darwin Microfluidics and found that a product is defective or missing, please follow these steps to resolve the issue:

Report immediately: Contact our customer service team as soon as possible. Reporting the issue promptly helps us address your concern more efficiently.

Provide details: When you contact us, please provide your order number, the name the order was placed under, and a detailed description of the issue. For defective products, include clear photos or a video that shows the defect.

Review: Our team will review your claim to determine the best course of action. We may ask for additional information or details about the problem.

Resolution: Depending on the situation, we may send a replacement for the defective or missing item, provide a refund, or offer another satisfactory resolution. Our goal is to ensure you are completely satisfied with your purchase.

Follow-up: We will keep you updated throughout the process and confirm when the issue has been resolved to your satisfaction.

We apologize for any inconvenience caused by a defective or missing item and are committed to resolving your issue as quickly and smoothly as possible.

At Darwin Microfluidics, our goal is to offer the most competitive prices directly as our list price, ensuring that all our customers receive great value without needing to navigate complex discount structures. Here’s a detailed look at our discount policy:

Competitive list prices: We work hard to ensure our list prices are among the most competitive in the market. This approach allows us to offer fair pricing to all our customers from the start, eliminating the need for frequent discounts.

Quantity-based discounts: For certain products, we offer quantity-based discounts directly on the product pages. These discounts are automatically applied based on the quantity of the product you purchase, providing savings for bulk purchases without the need for special codes or negotiations.

Bulk orders: While we strive to offer the best prices upfront, we understand that customers making large-scale purchases may have special considerations. In such cases, we invite you to discuss your needs with our sales team. Depending on the size and nature of your order, we may be able to offer tailored discounts or pricing adjustments.

We believe in transparency and simplicity in pricing, allowing you to make your purchases with confidence, knowing you're receiving a fair deal without the hassle of negotiating discounts. If you have any questions about pricing or discounts for bulk orders, please don't hesitate to reach out to our sales team for personalized assistance.

Please follow our returns & refund page.

Since Darwin Microfluidics sells exclusively to companies and institutions and is based in France, the VAT treatment for your orders depends on the location of your company or institution:

Within the EU (excluding France): For customers in other EU countries, the reverse charge mechanism applies. This means that VAT is not charged by us at the point of sale. Instead, it is your responsibility to account for the VAT at the standard rate applicable in your country under the reverse charge procedure. This process helps simplify cross-border transactions within the EU.

In France: For customers located in France, standard French VAT rates apply to all purchases. As a France-based company, we are required to charge VAT on sales to other French companies and institutions, which you can then reclaim according to local VAT procedures if applicable.

Outside the EU: For customers outside the European Union, sales are not subject to VAT by us. However, you may be subject to import duties, taxes, and charges that are not included in the item price or shipping cost. These charges are the buyer's responsibility and vary by country. We advise checking with your local customs office for more information.

Please ensure your VAT identification number is provided during the ordering process for EU transactions to qualify for the reverse charge mechanism. If you have any questions regarding VAT charges or need further assistance with VAT-related issues, please contact our customer service team.

We are unable to provide specific estimates for customs fees, duties, or taxes associated with your order. These charges are determined by the customs authority in your country and can vary based on a variety of factors, including the type of items purchased, their value, and the country to which they are being shipped.

We recommend contacting your local customs office directly to get the most accurate and up-to-date information regarding potential customs charges for your order. They can provide you with detailed guidelines on the fees you might expect to pay based on the products you're importing from us.

Please remember, these charges are the responsibility of the recipient and are not included in the shipping costs paid to Darwin Microfluidics.

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3 options for this product

2/2 Way Microfluidic Whisper Valve Type 6712
2/2 Way Microfluidic Whisper Valve Type 6712
SKU: BU-00273235
PEEK/FFKM
96.00€
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Available immediately
Out of stock
2/2 Way Microfluidic Whisper Valve Type 6712
2/2 Way Microfluidic Whisper Valve Type 6712
SKU: BU-20007124
PPS/EPDM
76.10€
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Available immediately
Out of stock
2/2 Way Microfluidic Whisper Valve Type 6712
2/2 Way Microfluidic Whisper Valve Type 6712
SKU: BU-00394634
PPS/FFKM
89.40€
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Available immediately
Out of stock
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