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  1. Home
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  3. ケーエヌエフ・ジャパン KNF JAPAN
  4. Liquid suction: direct liquid transfer and liquid overhead vacuum transfer
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  • Dec 05, 2025
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Dec 05, 2025

Liquid suction: direct liquid transfer and liquid overhead vacuum transfer

ケーエヌエフ・ジャパン ケーエヌエフ・ジャパン KNF JAPAN
Liquids can be suctioned using either direct liquid transfer or vacuum over liquid methods. It is important to understand these differences when selecting the appropriate technique and pump solution. While liquid suction may seem like a simple task, choosing the right suction method can be challenging. One option is direct liquid transfer, where the medium is transferred directly using a liquid pump. In vacuum over liquid transfer, a vacuum is used to suction the liquid. Both methods have their advantages, but there are also limitations. Understanding these differences is crucial to meet the specific requirements of the application. If the focus is on liquid transfer rather than liquid suction, the lesser-known method of pressurized liquid transfer may serve as an alternative.
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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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knf_n838series_composing_201707.jpg

Introduction to Maintenance Procedures for the KNF N838 Series

This is the replacement procedure for the consumable parts diaphragm and valve.

The maintenance procedures for other gas pumps are generally similar, so please refer to them.

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Related catalog(3)

KNF FP70 Pulsation Dampening Liquid Pump

KNF FP70 Pulsation Dampening Liquid Pump

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KNF N838.1.2 Series Diaphragm Vacuum Pump

KNF N838.1.2 Series Diaphragm Vacuum Pump

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KNF N838 Series Diaphragm Vacuum Pump

KNF N838 Series Diaphragm Vacuum Pump

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Machine elements and parts
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【Metal Crack Repair】We repair cracks in metal products without applying heat.

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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.

Mar 20, 2026

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Aluminum casting repair: Metal crack repair without applying heat.

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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.

Mar 20, 2026

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[Cast Iron Crack] We will 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 causing any thermal impact on the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is kept to a minimum. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

Mar 19, 2026

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[Cast Iron Crack] We will repair cracks in metal products 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 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.

Mar 19, 2026

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Image of wireless set usage

Solve your issues with wired bed exit sensors by connecting a wireless set linked to the nurse call system!

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Do you have any concerns or requests regarding wired bed exit sensors? × Tangling and tripping of wired cables × Cable disconnection or damage × Worry about forgetting to turn on the switch after temporarily stopping the sensor. × Want to be notified of bed exit even from a location away from the nurse call outlet. Such concerns can be resolved simply by connecting to a wireless set linked to the nurse call system! Our nurse call linked wireless set allows you to connect bed exit sensors like "Ugo-kun," "Foldable Thin Matta-kun," "Ayumi-chan," and "Just Place Pole-kun" to transmitters and receivers, reducing wiring around the bed, alleviating concerns about tripping and falling due to cables, and contributing to a tidier work environment. Furthermore, it enables the use of bed exit sensors even from locations away from the nurse call outlet, allowing for more flexible equipment placement.

Mar 19, 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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