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  6. Introduction to Maintenance Procedures for the KNF N838 Series

Introduction to Maintenance Procedures for the KNF N838 Series

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last updated:Nov 28, 2025

ケーエヌエフ・ジャパン KNF JAPAN
ケーエヌエフ・ジャパン KNF JAPAN
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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.

    Other pumps
knf_n838series_composing_201707.jpg

Introduction to Maintenance Procedures for the KNF N838 Series

knf_n838series_composing_201707.jpg
knf_n838series_composing_201707.jpg
  • Related Link - https://www.youtube.com/watch?v=p0u26Q7mEps
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Introduction to Maintenance Procedures for the N838 Series

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Applications/Examples of results

- Gas sampling - Medical devices - Analytical instruments etc.

Detailed information

  • FP_KNF_N838_ANDC-B_sRGB_72dpi_jpg.jpg

    N838 Series Single Head Type Brushless Motor Specification

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KNF N838.1.2 Series Diaphragm Vacuum Pump

KNF N838.1.2 Series Diaphragm Vacuum Pump

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A Path to Cleaner Air: KNF Pumps in Fine Particle Exhaust Gas Management

A Path to Cleaner Air: KNF Pumps in Fine Particle Exhaust Gas Management

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KNF N838 Series Diaphragm Vacuum Pump

KNF N838 Series Diaphragm Vacuum Pump

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Liquid suction: direct liquid transfer and liquid overhead vacuum transfer

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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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Fuel cell system hydrogen recirculation vacuum pump

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We propose the KNF vacuum pump, which is optimal for hydrogen recirculation in fuel cell systems, combining technical challenges such as pump airtightness and energy efficiency. With KNF's unique digital customization, it is possible to achieve the ideal design for your system.

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ケーエヌエフ・ジャパン

ケーエヌエフ・ジャパン KNF JAPAN

Machine elements and parts

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KNF was founded by Kurt Neuberger in 1946 in Freiburg, Germany (Freiburg im Breisgau). Since then, we have been a family-owned independent company providing our customers with security and stability. Over the years, we have achieved steady growth and expanded our business globally while accumulating experience. Currently, with 17 subsidiaries worldwide, we continue to deepen our expertise in various industries and advance the expansion of product applications. As a company specializing in the development, design, manufacturing, and sales of diaphragm pumps and gas and liquid handling systems, we have established our position globally as a provider of customer-oriented solutions to address challenges. Innovation means having an open attitude towards new approaches and various methods, and appropriately judging and identifying what will be needed for the future. By bringing together expertise from various engineering fields, including mechanical engineering, materials, fluid engineering, electronics, and software, we strive to find optimal and smart solutions for all applications, not only for our customers' current needs but also for their future requirements.

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