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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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fp400_front.jpg

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

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

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

PRODUCT
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KNF FP25 Pulsation Dampening Liquid Pump

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

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

PRODUCT
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Machine elements and parts
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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)

Apr 01, 2026

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Notice of Golden Week Holiday Closure (Donaldson Japan)

  • NEW
  • COMPANY

Thank you very much for your continued support. Donaldson Japan Co., Ltd. will be closed during the following period: From April 25 (Saturday) to May 6 (Wednesday). Inquiries made during the closure will be answered sequentially after May 7 (Thursday). We sincerely apologize for any inconvenience this may cause. Thank you for your understanding and cooperation.

Apr 01, 2026

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[Cast Iron Repair] We will repair cracks that have occurred in metal equipment without applying heat.

  • NEW
  • CATALOG

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 causing any thermal impact on the base material. Repairs can be carried out 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 needed, please contact us.

Apr 01, 2026

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

  • NEW
  • CATALOG

The "Mechanical Stitch 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 causing any thermal impact to the base material. Repairs can be carried out 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 needed, please contact us.

Apr 01, 2026

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■■ Air Leak Tester | FLA-0200 / FLA-0201 series ■■ Fukuda's new flagship model. Equipped with mastering correction function, it enables high-precision measurements in a short time.

  • NEW
  • PRODUCT

Fukuda's new flagship model. - Masterless type (FLA-0200 series) - General type (FLA-0201 series) Two models of air leak testers. With the mastering correction function, high-precision measurements can be achieved in a short time. Please take a look at the catalog.

Mar 31, 2026

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