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  1. Home
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  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

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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

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KNF FP7 Pulsation Dampening Liquid Pump

KNF FP7 Pulsation Dampening Liquid Pump

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ケーエヌエフ・ジャパン
Machine elements and parts
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The appearance of using hyper CLT flooring in a temporary parking lot.

Hyper CLT flooring panels are not just for construction sites. They have the potential to be effective in event venues as well.

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When it comes to hyper CLT sheets, many people may have the image of sheets used at construction or civil engineering sites. However, the potential of hyper CLT sheets (NETIS registration number TH-250021-A) goes beyond that. We believe that hyper CLT sheets can be utilized not only as "site materials" but also as "materials that support gathering places." One representative scene of this utilization is event venues. At event venues, there are many situations where it is necessary to temporarily protect the ground or create a safe environment for passage, such as outdoor events, local festivals, exhibitions, around temporary stages, food truck areas, material delivery routes, and pedestrian pathways for visitors. In this way, hyper CLT sheets have the potential to contribute to creating a foundation for people to gather, move safely, and use spaces, going beyond the framework of being merely "sheets for construction." Hyper CLT sheets have the potential to be active not only at construction sites but also in various situations such as event venues and temporary spaces. We do not want to think of "sheets" as something only for sites, but rather we aim to further expand their possibilities in the future.

Mar 25, 2026

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【Metal Crack Repair】We repair cracks in metal products without applying heat.

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  • COMPANY

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without any thermal impact on the base material. Repairs can be conducted in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is required, please contact us.

Mar 25, 2026

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HK-2

Recommended for earthquake measures for automatic doors and equipment! Seismic device HK-2.

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Japan is among the top 10 countries in the world with frequent earthquakes. The 2020 White Paper on Land, Infrastructure, Transport and Tourism has also reported an increase in the probability of significant earthquakes occurring. For the Nankai Trough earthquake, the probability of an earthquake with a magnitude of 8 to 9 occurring within the next 30 years is estimated to be 70 to 80%. At Hotron, we recommend the introduction of seismic devices for earthquake measures in buildings and equipment. The seismic device 'HK-2' is a product that automatically performs various controls that have been pre-set when it detects strong shaking equivalent to a seismic intensity of 5 lower or higher. For example, it can automatically execute actions such as: "Open automatic doors and gates to secure evacuation routes and access for emergency vehicles" "Transmit signals to the control room and stop facility equipment" "Unlock the keys to locked lockers" "Automatically play voice guidance" ◎ For more details, please download the materials or contact us.

Mar 25, 2026

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

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  • PRODUCT

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)

Mar 25, 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!

Mar 25, 2026

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  • UPSの選び方が変わる 過負荷耐量200%のUPS SANUPS N11D 鉛バッテリ リチウムイオンバッテリ EDLC
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