KNF Neuberger GmbH of Freiburg im Breisgau at virtual.drupa in Düsseldorf -- drupa - April 20 to 23, 2021 - Messe Düsseldorf
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KNF Neuberger GmbH

Alter Weg 3, 79112 Freiburg im Breisgau
Germany
Telephone +49 7664 59090
info.de@knf.com

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Contact

Jürgen Scherer

Product Manager Liquid Pumps

Germany

Phone
+49 7664/5909655

Email
juergen.scherer@knf.com

Manfred Gut

Product Manager Gas Pumps

Germany

Phone
+49 7664/5909625

Email
manfred.gut@knf.com

Volker Michel

Head of Sales Germany

Germany

Phone
+49 7664/5909686

Email
volker.michel@knf.com

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Our products

Product category: Inkjet, Inkjet system components

FP 70 - Smooth Flow Pump

With the FP 70, KNF has added another low pulsation pump to the smooth flow series. The new pump combines the low pulsation from gear and centrifugal pumps and the strengths known from diaphragm pumps.

Reliable transfer of precious liquids 
The KNF FP 70 is self-priming and can run dry, handles the liquid transfer gently and cleanly and is chemically resistant. Thanks to the integration of pulsation dampening technology, there is no need for additional pulsation dampening elements and tubing when using the KNF FP 70. That means, the pump can operate with particularly low pulsation even where space is limited.

The system’s requirements also come first when selecting the motor: The smooth flow pump can be equipped with motors of different performance classes, and their parameters can be precisely customized.

The KNF FP 70 achieves a flow of up to 850 ml/min. and is developed for an operation up to 2 bar (29.4 PSIG) pressure. Furthermore, the patented 4-point-valves ensure the reliable self-priming of the pump. Thus, no additional priming pump is required.
 

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Product category: Inkjet, Inkjet system components

N 96 - Diaphragm Vacuum Pump and Compressor

Whether you are working with gases or gas-liquid mixtures, the N 96 diaphragm pump is the right choice for reliable and precise handling.

Three new versions of the compact N 96 are now available. One includes an AC/DC converter, one features a stainless steel pump head and one an aluminum pump head.

The EPDM or PTFE-coated diaphragm ensures safe use with aggressive and/or corrosive media. Its chemically resistant design and very high tolerance of vapor and condensate means the N 96 can be used with a broad spectrum of media at temperatures of up to 70 degrees Celsius. These pumps can transfer, evacuate and compress media oil-free and without contamination.

The new versions of this pump offer significant advantages when integrated into other devices. The wide-range power supply unit mounted to the compressor housing enables the pump to be used across the globe, regardless of the local power grid voltage. The pump head can also be rotated in 90-degree intervals, allowing for the connections to be positioned as needed. Fastening holes located on the side of the pump housing facilitate tubeless connection via o-ring adapters attached to a manifold.

Since the highly efficient brushless DC motor can be controlled by PWM, a control loop can be established and even complex operating profiles can be dynamically represented. The N 96 emits relatively little heat itself while being suited for use at ambient temperatures of up to 50 degrees Celsius. The pump can start up without discharge in the range of 2.5 bar relative pressure to 100 mbar abs vacuum. The flow rate is as high as 8.5 l/min. If necessary, the pressure can be increased to up to 4 bar g – a distinct advantage for obtaining zero air in filter systems with back pressures of up to 3 bar.

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Product category: Inkjet, Inkjet system components

FP 150 - New Diaphragm Liquid Pump with Unique Characteristics

The company’s second pump series based on a 5-membrane design
If you are looking for a maintenance-free diaphragm pump with minimal pulsation and shearing force, look no further than KNF: The FP 150 is the company’s second pump series based on a 5-membrane design that combines the advantages of diaphragm pump technology with the benefits of gear pump technology. The FP 150 is self-priming, safe to run dry and at the same time the very low pulsation level makes secondary measures to avoid pulsing superfluous. Depending on the system set-up and speed, the values at the pump outflow at nominal flow rate are below 150 mbar, meaning that sensitive media are transferred gently.
 
Another winning feature of the new diaphragm liquid pump is the infinitely adjustable flow rate. The FP 150 boasts a maximum flow rate of 1.3 l/min, with outstanding linearity between 10 and 100 percent of this value. Not only that, but it is capable of resisting a back pressure of up to 2 bar.

Thanks to the KNF modular system, the FP 150 is available in a range of different versions. With a choice of EPDM, PTFE or FFKM diaphragms, the pump can be equipped for applications involving very aggressive media.

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Product category: Inkjet, Inkjet system components

NMP 850 HP - A Versatile Micro Diaphragm Pump

The NMP 850 HP micro gas pump is available with one or two heads. It is reliable and maintenance-free, with a 200 mbar absolute ultimate vacuum and an operating pressure of 2.5 bar relative.

The pump head is made of resistant PPS, seals made of highly chemically resistant FFKM, FKM or EPDM, and an FKM, PTFE respectively EPDM diaphragm.

Both the single-headed and the double-headed variant of the compact, high-performance NMP 850 HP can be fitted in any position.

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Product category: Inkjet, Inkjet system components

NPK 012 - Swing Piston Pump

Compact, quiet and running with minimal vibration: With the NPK 012, KNF has developed a swing piston pump for use in medical devices, inkjet and 3D printing technology, and vacuum gripping systems. In response to customer requests, KNF has expanded the pump series to include several new versions, allowing for an even greater variety of applications.

When the NPK 012 was introduced in 2019, it proved to be just what the market needed: a powerful pump with special features. Thanks to its high-power density, it quickly drew attention and customers soon requested specifications that would expand the areas of application. KNF now responds with a product update that meets these requirements along with the desire for shorter installation times. Among the most striking changes is the electrical connector. Not only does it speed up the integration of the pump when compared with the previous model using stranded wire, it also protects the motor connection against reverse polarity.

Based on long-term internal testing, the temperature range was expanded to accommodate media at temperatures of up to 60 degrees Celsius/ 140 degrees Fahrenheit. The tests showed that using the pump at higher temperatures did not adversely affect the lifespan of the product.

Thanks to the KNF modular system, an optional cover is now available for the NPK 012 pump housing, which offers improved safety protection. This is especially useful when the device itself lacks sufficient protection and means less work for the customer and thus lower costs. An optional base plate with a flexible bore pattern makes mounting the pump a breeze and compensates for vibrations.

The brushless DC motor allows for excellent control. With maximum power consumption of just 43 W, the NPK 012 builds up 2.5 bar/ 36.26 psig of high, continuous positive pressure, and up to 5 bar/ 72.52 psig during intermittent operation. The pump achieves an ultimate vacuum of up to 140 mbar abs/ 25.77 inHg, with a flow rate as high as 13.5 l/min. The NPK 012 delivers this high level of performance quietly and with minimal vibration. With a weight of just 600 g/ 1.3 lbs, the NPK 012 is also suitable for mounting in hand-held devices.

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Product category: Inkjet, Inkjet system components

FK 1100 - Low Pulsation Liquid Diaphragm Pump

The 12 L/min flow rate doubles KNF’s previous maximum for liquid diaphragm pumps. This pump is robust, adjustable, and offered in a variety of application-friendly materials.

The FK 1100 has only one inlet and one outlet, despite having three diaphragms. These are offset by 120° from each other while connected in parallel, resulting in very low pulsation and minimal shear forces. Intensive testing has proven that the pump easily achieves pulsation values below 200 mbar at the inlet and outlet. This gentle conveyance spares fragile system components and media elements from potential damage.

The pump has a highly durable design with a die-cast aluminum housing and high-torque motor options that provide continuous operation with up to 87 psig back pressure. Even at this high pressure, the FK 1100 still delivers an impressive 8 L/min. This pump is self-priming with a 13.5 inHg suction height. It is also able to run dry which reduces the need for additional equipment, offers more flexibility in planning, and allows for faster and easier system integration.

Versions are available in a variety of carefully selected materials, such as NSF-certified materials for food applications and chemically resistant elastomers. Customers can also choose between different drives, such as brushless DC or single-phase AC motors. The speed of the brushless DC motor can be controlled using analogue or digital PWM signals, permitting lower flow rates if desired. Applications for the FK 1100 include transfer, recirculation, temperature management, and aspiration of liquids in a wide variety of industries e.g. industrial inkjet printing.

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Product category: Inkjet, Inkjet system components

FL 10 - Diaphragm Liquid Pump

For precise transfer of ink and clean print heads

Clean and precise transfer of all types of ink
In order to achieve clean and precise printing results, the tightness of the components which transfer ink is key. That’s why KNF paid close attention to exactly this aspect when constructing its FL 10 diaphragm liquid pump.
The pump can transfer even low-viscosity inks, which are difficult to manage, without loss. This is achieved using a carefully designed sideport that creates a reliable hydraulic connection to the system. The pump is mounted without hoses or screw joints, thereby reducing costs and minimizing the number of sealing points. In addition, the integrated NC valve function ensures that when the pump is switched off, the ink in the feeder line comes to a stop. This prevents the ink from flowing through the pump head uncontrolled – even when the ink container is positioned upstream of the pump. The uncontrolled flow of ink into the ink return line, to which a vacuum is applied, is likewise prevented.
An integrated resonating chamber absorbs turbulences caused by negative pressure peaks, thereby ensuring that ink is transferred gently. The FL 10’s flow rate of up to 100 ml/min can be linearly controlled by varying the frequency from 0–50 Hz. The pump speed is flexible and can be precisely adjusted.

 
Reliable print quality thanks to efficiently cleaned print heads
If solvents are to be used in cleaning the print heads, it’s best to use the FL 10. The components that come into contact with media are chemically resistant and meet all the requirements of DOD and CIJ printers.

 

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Product category: Inkjet, Inkjet system components

N 84.3 - For the Reliable Removal of Dissolved Gas from the Ink and Feed Line

The N 84.3 diaphragm gas pump, which reaches an impressive suction speed of up to 5 l/min even at extreme negative pressure with an ultimate vacuum of 7 mbar abs. This enables it to reliably remove gas dissolved in the binder (degassing). The N 84.3 is highly compatible with condensation and its compact design makes for simple system integration.

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Product category: Inkjet, Inkjet system components

NMP 03 - Micro Diaphragm Pump

The NMP 03 micro diaphragm gas sampling pump is ideal for generating a vacuum at the print head and can rely on highly dynamic transfer to precisely regulate the meniscus effect. It offers low-vibration and low-pulsation performance and is highly chemically resistant thanks to PPS, EPDM or even FFKM.

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Product category: Inkjet, Inkjet system components

NFB 5 und NFB 25

NFB 5 and NFB 25 are double-headed liquid pumps with a maximum flow rate of 2x 50 and 2x 300 ml/min respectively. Low-pulsation and abrasion-free transfer of ink is essential for ensuring an immaculate print. The outstanding, tried-and-tested hermetically sealed pump head design and a large selection of hydraulic connection options keep the pumps reliably airtight at all times. A huge selection of materials and motor types make it possible to meet the specific needs of the printing process.

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Product category: Inkjet, Inkjet system components

Customized Pump Solutions for DOD and CIJ Printing Systems

Customized Pump Solutions for DOD and CIJ Printing Systems 

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Product category: Inkjet system components, Inkjet

KNF Modular System

How we collaborate to optimize your pump
Every application is different and some are one of a kind. Our modular system is designed to give you a high degree of flexibility, speed and reliability. You can be sure that every gas and liquid pump supplied by KNF will exactly meet your requirements, no matter how complex or unusual these might be. This includes a broad range of accessories. We work closely with you to design customized project pumps that give you a competitive edge in your target market. From its configuration to its testing conditions and packaging as well as customized warehouse and logistics concepts – your project pump is tailored to your particular needs.

Series models – the first step to customized pumps
KNF offers a range of 70 series models designed for handling gases and liquids. The performances of these are described in our data sheets.

The KNF modular system for creating customized pumps
It is easy to tailor every series model to meet application-specific requirements by selecting and combining a variety of options. These range from the material used to make the pump components that come into contact with the media, to the drive and the mechanical elements such as the circuit points and connections. The configurations created by the KNF modular system are based to tried and tested individual components, meaning that developing customized pumps is quick and inexpensive.

Project pumps – precisely designed for the application
We support your development project by providing you with sample pumps quickly and easily. In consultation with you, our employees from the sales, engineering, and product management divisions determine the modifications to be made to the product’s standard technical parameters.

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Product category: Inkjet system components, Inkjet

KNF Active Principle of our Diaphragm Pumps

KNF Active Principle of our Diaphragm Pumps

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Company news

Date

Topic

14 Apr 2021

The powerful five for the printing industry - KNF at virtual.drupa 2021

From April 20 to 23, leading experts in the printing industry will meet at virtual.drupa. The world’s largest exhibition for print media – including specialist presentations and showrooms – will take place completely online. KNF’s own booth will feature pump solutions for the continuous transfer of inks and binders, degassing, print head cleaning and more.

 

KNF will present custom-fit solutions for modern inkjet and 3D jetting technologies at virtual.drupa. Diaphragm pumps for neutral and aggressive gases and liquids are configured in a modular system for versatile use. These pumps are used in many different settings, including for supplying print heads with inks and binders, recirculating pigmented inks, degassing, print head cleaning, purging and vacuum generation on the print head for the meniscus effect, and ink circulation.

Professionals in this field can find out about the entire range of uses online. The company has plenty of innovations to share.

 

FP 70 smooth flow pump

The FP 70 is the latest and the most compact pump to be added to the smooth flow series. Pulsation-damping technology is already integrated into this series, eliminating the need for further precautionary measures. The FP 70 combines the advantages offered by KNF’s diaphragm pumps with the key strengths of gear and centrifugal pumps. This self-priming pump features dry-run protection and ensures low-pulsation operation in a confined space. With its patented 4-point valves, the FP 70 reliably transfers inks and binders to the print head even at low rotational speeds. It is also chemically resistant and low-maintenance. No additional suction pump is needed in the printing system.

The diaphragm pump can achieve a flow rate of up to 850 ml/min and is designed to operate at pressures of up to 2 bar. As part of KNF’s modular system, the FP 70 can be customized with motors of various performance classes.

 

FP 150 with 5-diaphragm design

The FP 150 will also be making its debut at virtual.drupa. The maintenance-free diaphragm pump scores big with minimal pulsation and shearing force. With its special 5-diaphragm design, this pump is also self-priming and can operate dry. At the same time the very low pulsation level makes secondary measures to avoid pulsing superfluous. Depending on the system set-up and speed, the values at the pump outflow at nominal flow rate are below 150 mbar, meaning that even sensitive inks and binders can be transported gently. Another winning feature of the FP 150 is its infinitely adjustable flow rate of a maximum 1.3 l/min and outstanding linearity between 10 and 100 percent of this value. Not only that, but it is capable of resisting a back pressure of up to 2 bar.

The FP 150 is available in a range of different versions within the KNF modular system. With a choice of EPDM, PTFE or FFKM diaphragms, the pump can be equipped for applications involving very aggressive media.

 

Comprehensive options from the NMP 850 HP pump series

KNF is introducing the NMP 850 HP for degassing, vacuum generation on the print head for the meniscus effect, purging and print head cleaning in inkjet as well as for 3D printing systems. The versions of this comprehensive pump series are also suitable for vacuum generation for fixing 3D printing work pieces in place. This diaphragm pump’s parameters include a flow rate of up to 16 l/min, an ultimate vacuum of 200 mbar absolute and an operating pressure of 2.5 bar relative. Both a single-headed and a double-headed version of the NMP 850 HP are available with pump heads made of resilient PPS. The valves and seals are available in highly chemically resistant FFKM, FKM or EPDM, and the diaphragm in FKM, PTFE or EPDM.

 

The high-performance NPK 012

The NPK 012 can generate a flow rate of up to 13.5 l/min to purge and clean print heads of inkjet as well as 3D printing systems. The brushless DC motor allows for excellent adjustable control of the rotational speed. With a maximum power consumption of just 43 W, the NPK 012 builds up 2.5 bar of high, continuous positive pressure, and up to 5 bar during intermittent operation. The ultimate vacuum can reach up to 140 mbar abs. The NPK 012 delivers this high level of performance quietly and with minimal vibration.

 

N 96 for complex operating profiles

The N 96 is ideal for generating a vacuum to fix 3D printing work pieces in place. With a highly efficient brushless direct current motor and rotational speed control, the diaphragm pump can dynamically meet the requirements of complex operating profiles. The pump can start up without discharge in the range of 2.5 bar relative pressure / 100 mbar abs vacuum and achieves a flow rate of up to 8.5 l/min.

KNF will present this and other solutions for the printing industry at virtual.drupa from April 20 to 23, 2021. The company’s specialist team is looking forward to a large turnout of online attendees.

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About us

Company portrait

KNF provides high-quality diaphragm pumps and systems for neutral and aggressive gases and liquids.

For use in: Ink delivery, Degassing, Print head cleaning, Purging, Vacuum generation on the print heads for the Meniscus Effect and Ink circulation

KNF was founded in 1946 by Kurt Neuberger in Freiburg im Breisgau, Germany. We have remained independent and family-owned ever since, offering a reassuring level of stability to our customers. We have established ourselves globally as a solution provider specializing in the development, design, production and distribution of diaphragm pumps and systems for handling gases and liquids. Over the years we have enjoyed steady growth while also broadening our experience and global reach. With 17 companies worldwide today, we are still constantly expanding our multi-industry expertise and wide range of applications.

Company data

Foundation 1946

Company information as a PDF file