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  1. Home
  2. Machine elements and parts
  3. ケーエヌエフ・ジャパン KNF JAPAN
  4. The important role of diaphragm pumps for hydrogen fuel cells.
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  • May 19, 2025
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May 19, 2025

The important role of diaphragm pumps for hydrogen fuel cells.

ケーエヌエフ・ジャパン ケーエヌエフ・ジャパン KNF JAPAN
In the pursuit of sustainable energy solutions, diaphragm pumps provide precise control, safety, and efficiency as a crucial component in hydrogen management within fuel cell systems. As the world moves towards decarbonization, hydrogen fuel cells have emerged as a potential foundational technology for more sustainable energy generation. Within such systems, diaphragm pumps perform several key functions that directly impact performance and lifespan, from hydrogen recirculation to condensate management.
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水素燃料電池用ダイアフラムポンプの重要な役割.pdf[0]

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FF 12 KPDCB-4.png

KNF FF12 Series Diaphragm Liquid Pump

The successor model of the bestselling NF10 series.

- Self-sufficient - Click-on type mount plate - Maintenance-free, contamination-free - Abundant wetted materials Basic flow rate: 150 ml/min (KP) / 130 ml/min (KT) Suction lift: 3 mWg (KP) / 2 mWg (KT) Discharge lift: 10 mWg

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fp7.jpg

KNF FP7 Series FP25 Pulsation Mitigation Diaphragm Liquid Pump

Pulsation-reducing liquid pump, a diaphragm liquid pump that significantly reduces pulsation generated during pump suction and discharge.

We have reviewed the design of the pump itself as a liquid pump for pulsation reduction measures. Previously, pulsation reduction was achieved using dampers, but now the pump itself significantly suppresses pulsation. - FP7 Series / FP25 Series The pulsation reduction damper has been integrated with the pump. Two types are available: brushed DC motors and brushless DC motors. Digital customization is also possible with the brushless DC motor.

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FM50_weiss.jpg

Liquid Quantitative Delivery Pump METERING PUMP FM50 Series

A state-of-the-art diaphragm liquid pump boasting extremely stable liquid flow, unprecedented flow accuracy, and reproducibility.

- Very stable liquid flow rate - Large flow range - Linear and predictable flow - Minimal variation in pump individual differences - High accuracy through end-of-line calibration - Self-sustaining, capable of dry running - Capable of handling fine particles - Brushless DC motor with digital customization options

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n938andc-b-72dpi.jpg

KNF N938 Series

We can provide customization of various connection gas materials, fittings, and motors to help solve our customers' challenges.

- Brushless DC motor - High pumping speed across all areas of positive and negative pressure - Robust and compact - Analog or digital speed control - Pump parameters can be read - Safety features N 938 AN.29 DC-B Basic flow rate: 9 - 35 l/min Achievable vacuum level: < 160 mbar abs Maximum allowable discharge pressure: 1.0 bar (0.1 MPa) N 938.1.2 AN.29 DC-B Basic flow rate: 13 - 53 l/min Achievable vacuum level: < 140 mbar abs Maximum allowable discharge pressure: 1.0 bar (0.1 MPa)

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Related catalog(5)

KNF N938 Series Diaphragm Vacuum Pump

KNF N938 Series Diaphragm Vacuum Pump

PRODUCT
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Liquid Quantitative Delivery Pump FM 50 Series

Liquid Quantitative Delivery Pump FM 50 Series

PRODUCT
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KNF FM50 Quantitative Liquid Delivery Pump

KNF FM50 Quantitative Liquid Delivery Pump

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KNF FF12 Series Diaphragm Liquid Pump

KNF FF12 Series Diaphragm Liquid Pump

PRODUCT
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KNF FP7 Pulsation Dampening Liquid Pump

KNF FP7 Pulsation Dampening Liquid Pump

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Machine elements and parts
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Hyper CLT flooring panel

CLT flooring method expanding into civil engineering | Hyper CLT flooring

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In civil engineering sites, the use of sheet piling methods is essential for safely utilizing the site, including temporary roads, access roads, heavy machinery work yards, material storage areas, and worker pathways. Traditionally, steel plates have been widely used, but due to their weight, they can be cumbersome to transport, install, and remove. Hyper CLT sheet piles are civil engineering materials made from wooden CLT for civil use. The 5×10 panel weighs approximately 230 kg, and the 5×20 panel weighs about 460 kg, making them lightweight and easy to handle with small machinery, contributing to reduced burdens during installation and improved work efficiency. They can be utilized in a wide range of civil engineering sites for measures against muddy conditions, ground protection, heavy machinery scaffolding, and ensuring pedestrian pathways. As a registered technology under the Ministry of Land, Infrastructure, Transport and Tourism NETIS "TH-250021-A," it is also recommended as a material for innovative ideas, safety measures, and environmental considerations in public works.

Jun 30, 2026

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Fukuda's leak test, leak inspection, leak detection, leak test, integrity test.

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Fukuda Co., Ltd. has been pursuing leak detection for 60 years and is committed to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing properties. We will propose the appropriate testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

Jun 29, 2026

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Hyper CLT flooring panel

Easy-to-install civil engineering CLT flooring with small heavy machinery | Hyper CLT flooring

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In civil engineering sites, there are many instances where temporary roads, access routes, heavy machinery workspaces, and material storage areas use ground plates. Traditional steel plates are heavy, requiring large machinery for installation and removal, which can make work difficult in narrow sites. Hyper CLT ground plates are lightweight civil engineering CLT materials made from wooden CLT for civil use. A 5×10 plate weighs about 230 kg, and a 5×20 plate weighs about 460 kg, making them easy to handle even with small machinery, thus reducing the burden of transportation, installation, and removal. They are easy to use in sites with limited space or where the use of large machinery is difficult. They can be widely used for temporary roads, heavy machinery scaffolding, pathways within the site, and material storage protection, contributing to glare reduction, noise reduction, and environmental consideration. As a registered technology with the Ministry of Land, Infrastructure, Transport and Tourism under NETIS "TH-250021-A," they are also recommended as materials for innovative ideas and safety measures in public works.

Jun 29, 2026

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Hotron Group Case Page

[Case Study] Hotron pursues sensor technology and creates products that generate safe and comfortable living spaces. We would like to introduce Hotron products that support people's lives throughout the city.

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We will introduce the implementation results of the sensor technology developed by the Hotron Group, which has been cultivated over more than half a century, through customer case studies. In addition to automatic door sensors, we also offer a wide range of vehicle detection sensors and nursing/care sensors. Many implementation examples are also presented, so please take a look at the case study page.

Jun 29, 2026

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Please take a look at the technical document for the leak test, the "Technical Manual"!

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  • CATALOG

Fukuda Co., Ltd., which develops, manufactures, and sells leak testing equipment to inspect airtightness and sealing performance, provides a technical document that clearly explains the methods and theories of airtight testing, titled "Technical Manual." We are offering it as a PDF file. Please take this opportunity to download and view it!

Jun 29, 2026

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  • 金属・化学・窯業 食品・医薬品などの ほぐし・解砕 ふるい分けがこれ一台 解砕機構付き佐藤式振動ふるい機 つばさ デモ実施中!
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