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  1. Home
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  3. ケーエヌエフ・ジャパン KNF JAPAN
  4. Whether it's turbulence or calm. It's up to you to decide.
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  • Oct 28, 2025
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Oct 28, 2025

Whether it's turbulence or calm. It's up to you to decide.

ケーエヌエフ・ジャパン ケーエヌエフ・ジャパン KNF JAPAN
From high-resolution inkjet printers to life-saving devices, KNF's advanced flow technology delivers smooth, turbulence-free performance in situations where precision is everything. Gentle Flow Pump – A groundbreaking product in diaphragm pump innovation KNF's Gentle Flow series employs two advanced design techniques to achieve minimal pulsation. One is a design that uses an internal damper integrated within the pump to absorb pressure fluctuations. The other is a design that connects up to five diaphragms in parallel, operating each with a phase difference to smooth the flow. Both configurations minimize vibration and noise, enabling precise flow control through a built-in brushless DC motor.
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FP 70 KPDC iso.png

FP70 Series Diaphragm Liquid Pump

Pulsation Reduction Gentle Flow Diaphragm Liquid Pump

- The pulsation reduction feature allows for the transfer of liquids with minimal pulsation. - Due to the reduced pulsation, pressure loss in the tubing can be minimized. - It enables the transfer of liquids with fewer air bubbles. - It can reduce the optional parts for pulsation reduction measures. - Equipped with a newly developed valve, it can achieve self-priming suction even at lower motor speeds. - Flow rate adjustment is possible through brushless motor control. - Materials with NFS certification are also available. Basic flow rate: 700 ml/min Diaphragm material: EPDM / PTFE

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FP1.7.jpg

KNF FP1.7 FP1.25 Pulsation Control Diaphragm Liquid Pump

Pulsation-reducing liquid pump, a high-output diaphragm liquid pump that significantly reduces pulsation generated during pump suction and discharge. Exhibiting at JASIS 2025.

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. It features a high discharge specification. - FP1.7 Series / FP1.25 Series We have integrated the pulsation reduction damper with the pump. Two types are available: brushed DC motors and brushless DC motors. The brushless DC motor also allows for digital customization. We will be exhibiting at JASIS 2025, one of Asia's largest cutting-edge science and analysis systems & solutions exhibitions, where manufacturers of analytical and scientific instruments gather. Please visit our booth. We look forward to seeing you there. ■ Exhibition Name: JASIS 2025 ■ Date: September 3 (Wed) - 5 (Fri), 2025 (3 days) ■ Venue: Makuhari Messe International Exhibition Hall and Conference Center ■ Participation Fee: Free (Pre-registration required) ■ Booth Number: 6B-703

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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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Pulsation Reduction Diaphragm Liquid Pump FP400 Series Mechanism

Introduction to the mechanism of the low-pulse liquid pump FP400 series. You can see the five-diaphragm system and the movement of the valves.

Introduction to the FP400 series mechanism *The FP150 series has the same mechanism.

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Maintenance procedure video for the FP150 and FP400 series.

Maintenance procedure video for low pulsation liquid pumps FP150 and FP400 series.

Maintenance can be performed by the users themselves using general-purpose tools.

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FP150_db_front.jpg

KNF FP1.150 Diaphragm Liquid Pump

High-output type, pulsation control design diaphragm liquid pump, ideal for inkjet printers, high-pressure cleaning systems, etc., with corrosion-resistant components also available.

- High discharge design, maximum allowable discharge pressure 0.6 MPa - Reduced pulsation in liquid delivery - Long lifespan design - Excellent linearity - Self-sustaining - Transfer of sensitive liquids - Abundant wetted materials Significantly reduces pulsation using five diaphragms, controls flow rate with an external signal to a brushless DC motor, and demonstrates a linear flow curve based on the control signal. It offers extensive customization for users' technical challenges and various optional parts are available.

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FP150_db_front.jpg

KNF FP150 Diaphragm Liquid Pump

Pulsation control design diaphragm liquid pump

- Reduced pulsation in liquid delivery - Long lifespan design - Excellent linearity - Self-sustaining - Transfer of sensitive liquids - Abundant wetted materials Basic flow rate: 1.5 l/min (KP) / 1.3 l/min (KT) Suction lift: 2.7 mH2O (KP) / 2.5 mH2O (KT) Discharge lift: 20 mH2O

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fp400_front.jpg

KNF FP Series Pulsation Control 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. Traditionally, pulsation reduction was achieved using dampers, but we have significantly suppressed pulsation with the pump itself. - FP70 Series We have integrated the pulsation reduction damper with the pump. - FP150 / FP400 / FK1100 Series We have increased the number of diaphragms to a maximum of five, allowing for the cancellation of pulsation within the pump. - FP1.150 / FP1.400 / FK1.1100 Series We have increased the number of diaphragms to a maximum of five, allowing for the cancellation of pulsation within the pump. Additionally, we have improved the maximum allowable discharge pressure to 6 bar (0.6 MPa), achieving smooth liquid transfer even under challenging pressure conditions.

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Related catalog(9)

KNF FP1.25 Pulsation-Damping Liquid Pump High Discharge Type

KNF FP1.25 Pulsation-Damping Liquid Pump High Discharge Type

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KNF FP1.7 Pulsation-Damping Liquid Pump High Discharge Type

KNF FP1.7 Pulsation-Damping Liquid Pump High Discharge Type

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KNF FP25 Pulsation Dampening Liquid Pump

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KNF FP7 Pulsation Dampening Liquid Pump

KNF FP7 Pulsation Dampening Liquid Pump

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KNF FP1.400 Pulsation Dampening Liquid Pump

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KNF FP1.150 Pulsation Reduction Liquid Pump

KNF FP1.150 Pulsation Reduction Liquid Pump

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KNF FP150 Pulsation Dampening Liquid Pump

KNF FP150 Pulsation Dampening Liquid Pump

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KNF FP400 Pulsation Dampening Liquid Pump

KNF FP400 Pulsation Dampening Liquid Pump

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KNF FP70 Pulsation Dampening Liquid Pump

KNF FP70 Pulsation Dampening Liquid Pump

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

  • NEW
  • 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!

Jul 08, 2026

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

  • NEW
  • 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)

Jul 08, 2026

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Please take a look at Fukuda's gas leak test (hydrogen leak and helium leak)!

  • NEW
  • PRODUCT

● What is a hydrogen leak detector? It can measure leaks in small areas that could not be detected in air leak tests and can also identify the leak locations. It is a detector that uses a mixture of 5% hydrogen and 95% nitrogen (non-flammable gas: ISO10156:2017) as the tracer gas. ● What is a helium leak test system? It is a leak test system suitable for high-precision or high-pressure leak inspections. The helium leak test system uses helium gas as the detection gas (tracer gas) and detects the helium that has leaked out. It is the leak test method among Fukuda's leak testers that can detect the smallest leaks.

Jul 08, 2026

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■■ Portable Hydrogen Leak Detector | HDA-0100 series ■■ Compact, lightweight, and battery-operated for easy portability. Despite being handheld, it enables high sensitivity and wide-range "hydrogen measurement."

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  • PRODUCT

The 【 HDA-0100 series 】 currently available from Fukuda Corporation is a "Portable Hydrogen Leak Detector." ■ Compact and lightweight, convenient for carrying (approximately 400 g, including battery) ■ Battery-operated and cordless (continuous usage time of approximately 8 hours) ■ High sensitivity and wide range (0.5 ppm to 5000 ppm) hydrogen measurement is possible in a handy type It has features such as these. "What is a Hydrogen Leak Detector?" It is a tester that can measure leaks in small areas that could not be measured in air leak tests and can also identify leak points. It uses a tracer gas consisting of 5% hydrogen and 95% nitrogen, an industrial mixed gas (non-flammable gas: ISO10156:2017). For more details, please refer to the links below for related links, product information, and catalogs.

Jul 08, 2026

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Please take a look at Fukuda's flow meters! (Flow Tester, Flow Unit, Laminar Flow Meter)

  • NEW
  • PRODUCT

● What is a flow meter? Flow meters measure flow rates using mass flow meters or laminar flow meters and perform pass/fail judgments based on flow rate criteria. They are ideal for measuring airflow and conducting performance tests. "FMZ-1063 series" This is a flow tester equipped with a mass flow meter. It offers high precision of ± 3.5 % of R.D. ± 1 digit (in the normal flow range). It features a time-saving function (scan measurement). The FMZ-1063 is a compact, all-in-one flow tester with various functions. "FU series" This is a flow measurement unit that integrates laminar and differential pressure sensors, making it smaller and lighter. When connected to a display indicator (model: MI-170), it can provide direct flow readings as well as pressure and flow judgments. "FLF-110 series" This is a laminar flow meter capable of measuring a wide range of flow rates from 2 NmL/min to 500 NL/min.

Jul 08, 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!
  • 排気熱風なく 気温-4.1℃の冷風を 工事不要で暑さ対策 店舗・工場の 安全対策に! 気化式スポットクーラー Pure Drive ピュアドライブ
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