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  1. Home
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  3. ケーエヌエフ・ジャパン KNF JAPAN
  4. Diaphragm Pump vs. Swing Piston Compressor: Choosing the Right Gas Pump Solution
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  • Feb 27, 2026
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Feb 27, 2026

Diaphragm Pump vs. Swing Piston Compressor: Choosing the Right Gas Pump Solution

ケーエヌエフ・ジャパン ケーエヌエフ・ジャパン KNF JAPAN
Diaphragm pumps and swing piston compressors are both strong options for gas applications. What are the advantages and disadvantages of these technologies? When selecting a pump for gas applications, various technologies can be chosen. Among these technologies are diaphragm pumps and swing piston compressors. Both types of pumps have proven effective in various gas applications. Diaphragm pumps and swing piston compressors each have strengths that make them particularly effective for specific applications.
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KNF NPK012 Series Oscillating Piston Gas Pump

Compact design, oscillating piston type gas pump achieving a high pressure of up to 7 barG.

In the semiconductor manufacturing industry, efficient handling of exhaust gases during the manufacturing process is required. In particular, gas emissions in a vacuum environment significantly affect product quality and manufacturing efficiency. Improper exhaust can lead to product defects and increased manufacturing time. The KNF NPK012 series oscillating piston gas pump optimizes the exhaust process in semiconductor manufacturing due to its high vacuum and pressure performance. 【Usage Scenarios】 - Exhaust from semiconductor manufacturing equipment - Gas emission from vacuum chambers - Gas emission in analytical instruments 【Benefits of Implementation】 - Efficient exhaust due to high vacuum and pressure performance - Improved product quality - Optimization of the manufacturing process

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KNF NPK03 Series Oscillating Piston Gas Pump

Customizable, high discharge, excellent size-to-performance ratio, low noise and low vibration, long lifespan, contamination-free, maintenance-free, no restrictions on installation direction.

- Medical devices - Analytical instruments - Filtration and nebulization - Compressed air supply - Inkjet printer - Security - Food industry Basic flow rate: 2.7 - 3.0 l/min ~ Achievable vacuum level: < 250 mbar abs ~ Maximum allowable discharge pressure: 5 bar (0.5 MPa) *Maximum 2 barG during continuous operation

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NPK04KVDC.jpg

KNF NPK04 Series Oscillating Piston Gas Pump

Customizable, high output, excellent size-to-performance ratio, low noise and low vibration, long lifespan, contamination-free, maintenance-free, no restrictions on installation direction.

- Medical devices - Analytical instruments - Filtration and nebulization - Compressed air supply - Inkjet printer - Security - Food industry Basic flow rate: 3.0 l/min ~ Achievable vacuum level: < 300 mbar abs ~ Maximum allowable discharge pressure: 2.5 bar (0.25 MPa) *Maximum 1 barG during continuous operation

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KNF NPK06 Series Oscillating Piston Gas Pump

Customizable, high output, excellent size-to-performance ratio, low noise and low vibration, long lifespan, contamination-free, maintenance-free, no restrictions on installation direction.

- Medical devices - Analytical instruments - Filtration and nebulization - Compressed air supply - Inkjet printer - Security - Food industry Basic flow rate: 2.5 - 3.0 l/min ~ Achievable vacuum level: < 300 mbar abs ~ Maximum allowable discharge pressure: 2.5 bar - 2.8 bar (0.25-0.28 MPa) *Maximum 1 barG during continuous operation

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FP_KNF_NPK012-DC-B-M_sRGB_72dpi.jpg

KNF NPK012 Series Oscillating Piston Gas Pump

Compact yet delivers high performance with a maximum pressure of 7 barG and a robust design.

- Transport of liquid and gas samples for analysis - Medical technology - Inhalation devices, etc. - Vacuum technology - Chucking, etc. NPK012 DC-B-M PR Basic flow rate: 8.3 - 12 l/min ± 10% Achievable vacuum level: < 220 mbar abs ~ Maximum allowable discharge pressure: 5 bar (0.5 MPa) * Maximum discharge pressure during continuous operation 2.5 barG NPK012 DC-B-M VA Basic flow rate: 7.0 - 13.5 l/min ± 10% Achievable vacuum level: < 140 mbar abs ~ Maximum allowable discharge pressure: 1 bar (0.1 MPa)

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NPK02AVDC.jpg

NPK02 Series Swing Piston Gas Pump

DC power-driven small piston pump NPK02

Weight 141g, small piston pump, excellent size-performance ratio, low vibration, low noise, contamination-free, maintenance-free.

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KNF NPK09 Series Oscillating Piston Gas Pump

Compact yet delivers high performance with a maximum pressure of 7 barG and a robust design.

- Transport of liquid and gas samples for analysis - Medical technology - such as inhalation devices - Vacuum technology - such as chucking Basic flow rate: 12 - 24 l/min ~ Achievable vacuum level: < 100 mbar abs ~ Maximum allowable discharge pressure: 7 bar (0.7 MPa)

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NPK02AVDC-B.jpg

Swing Piston Pump NPK 02

Compact and powerful NPK 02 swing piston pump, from medical devices to environmental analysis equipment.

High pressure, low noise The compactly designed NPK 02 swing piston pump demonstrates excellent performance with a maximum discharge pressure of 2.1 barG and a flow rate of 1.8 l/min, consistently maintaining high discharge pressure without overheating during continuous operation. Its low levels of noise and vibration make it ideal for environments where quiet and reliable operation is essential. Customizability to accommodate a wide range of applications The NPK 02 swing piston pump, equipped with multiple combinations of pump heads, valves, and piston seal materials, as well as various motor and eccentricity options, offers the flexibility to meet specific customer requirements and ensure optimal performance for individual applications. It consistently delivers reliable performance to meet the needs of various industries, including medical devices such as endoscope cleaning systems and diagnostic equipment, enhanced analytical instruments for gas monitoring, purging for inkjet and 3D printing systems, and supplying compressed air against liquid pressure. *For more details, please download the PDF or contact us directly.*

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NPK 02

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KNF NPK09 Series Swing Piston Compressor & Pressure Reducing Pump

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KNF NPK03 Series Swing Piston Compressor & Vacuum Pump

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KNF NPK04 Series Swing Piston Compressor & Vacuum Pump

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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)

May 01, 2026

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Non-contact light beam touch sensor "HA-T Series"

【Catalog now available!】Energy-saving automatic door sensors "HA-T401/HA-T520"

  • NEW
  • CATALOG

The "HA-T Series" is an energy-saving automatic door sensor that opens only for those who wish to enter, whether on a busy street or in a narrow passageway. The automatic door opens simply by bringing your hand close, addressing hygiene concerns even in facilities used by a large number of people. You can choose between "Non-vision Mount Type/HA-T401" and "Non-vision Built-in Type/HA-T520" depending on the application and installation location. 【Recommended for such places!】 ☑ Entrance facing a busy corridor ☑ Presence of counters or signs near the door ☑ Buildings facing narrow passages ☑ Buildings that prioritize aesthetics ☑ Hospitals and facilities that consider hygiene ☑ Large facilities with many doors 【Features】 ● Adaptable to various door types with four detection spot settings ● Reduces unnecessary opening and closing, contributing to energy-saving by minimizing wasteful power consumption ● Equipped with a light touch function, allowing the door to open and close just by waving your hand, ensuring hygiene ● Can also be used as a wide detection range non-vision infrared sensor ◎ For more details, please download the materials or contact us.

May 01, 2026

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Micro Mist Spray Dryer MDL-050(C)M

Spray drying contract and testing now accepting applications.

  • NEW
  • COMPANY

***Contract Processing Now Accepting Orders*** We can accommodate small lots and a variety of sample tests, including spray drying with organic solvents. Please feel free to contact us. ----Example of a Prototype Schedule---- 9:30 Pre-test Meeting 10:00 Spray Drying Test Starts 12:00 Lunch Break 13:00 Spray Drying Test Resumes 16:00 Post-test Meeting

May 01, 2026

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Wearprint Early Discount Campaign

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  • EVENT

【Period: Ongoing until May 31, 2026】 Now 20% OFF! For orders of 10 or more: Dry T-shirts @ 1,600 yen (tax included) Dry polo shirts @ 2,000 yen (tax included) (Price includes the garment and one print location) * For sizes 3L and above, an additional 550 yen * An additional 550 yen for each additional print location Design and data production fees are required separately. (No fee for complete data submission) We accept orders for various purposes such as events, teams, goods, souvenirs, and gifts, from one piece to mass production. We also have many other garments not listed. Please feel free to inquire.

May 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.

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  • 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.

May 01, 2026

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  • 展示会出展等の販売促進に必要な費用を助成します! 最大300万円 助成率1/2以内 市場開拓助成事業 展示会等参加費・印刷物制作費・動画制作費 など 申請受付:令和8年 5/15(金)~5/29(金)
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