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  6. Air-driven double diaphragm pump "One Nut Pump"

Air-driven double diaphragm pump "One Nut Pump"

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last updated:Jul 30, 2025

中央理化 本社
中央理化 本社
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[Free demo unit available] Simple maintenance with fewer parts! Air-driven diaphragm pump that can be disassembled and assembled with just one nut - long-lasting diaphragm.

【High Cleanability Simple Design Air-Driven Diaphragm Pump】 The "One Nut Pump (Air-Driven Diaphragm Pump)" features a compact style, long-lasting diaphragm, easy-to-clean simple structure, fewer parts for quick maintenance, and can handle a wide range of liquids due to its diverse materials. It is an air-driven diaphragm pump capable of a maximum flow rate of 55 to 908 L/min with a non-lubricated air system. The diaphragm is designed to withstand high temperatures (up to 135°C), allowing it to handle a wide variety of liquids. With a short stroke, the pump efficiency is very high, and using the One Nut Pump (Air-Driven Diaphragm Pump) significantly reduces process downtime, resulting in substantial savings in maintenance costs without altering the pump's performance. 【Features of the One Nut Pump (Air-Driven Diaphragm Pump)】 ■ Fewer parts for easy maintenance ■ Repair can be done by maintenance personnel without sending it out for repairs if repair parts are purchased ■ Diaphragm replacement can be done while connected to the piping ■ Long-lasting diaphragm *For more details, please refer to the PDF document or feel free to contact us.

    Special Pump
中央理化.jpg

Air-driven double diaphragm pump "One Nut Pump"

中央理化.jpg
中央理化.jpg
  • Related Link - https://chuorika.co.jp/onp_option_spareparts.html

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basic information

【Features】 ○ Fast maintenance ○ Long-lasting diaphragm ○ Few parts ○ Simple air system ○ Self-sufficient, dry up to 3.6m ○ High viscosity transfer ○ Dry running OK ○ Low shear ○ Oil-free ○ Stainless steel is standard SUS316L ○ Standard integrated diaphragm of Teflon + rubber ○ High cleanliness ○ Shaft does not slide, no O-ring used ○ Restart function available when stopped, no need for relief valves, etc. *For more details, please refer to the PDF document or feel free to contact us.

Price information

Please feel free to contact us.

Delivery Time

P4

※About two weeks

Applications/Examples of results

- Transport of liquid agents - Transport of high-viscosity liquids - Transport of liquid agents containing solid materials - Reduction of time loss when immediate cleaning is required

catalog(5)

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Air-driven diaphragm pump "One Nut Pump" comprehensive catalog

Air-driven diaphragm pump "One Nut Pump" comprehensive catalog

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[Case Study Material] Hygienic Pump "One Nut Pump" Optional Features

[Case Study Material] Hygienic Pump "One Nut Pump" Optional Features

TECHNICAL
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One-Nut Pump Case Study Collection

One-Nut Pump Case Study Collection

TECHNICAL
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Good Food Pump (One Nut Pump)

Good Food Pump (One Nut Pump)

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One Nut Pump Drum Unloading System

One Nut Pump Drum Unloading System

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News about this product(3)

[Exhibition Participation] Interphex Japan 2023

  • Seminar・Event

Central Rika Booth Number: 20-17 Japan's Largest! Specialized Technology Exhibition for Pharmaceuticals and Cosmetics This is Japan's largest specialized technology exhibition where all products, technologies, and services related to the research and manufacturing of pharmaceuticals and cosmetics are showcased. Pharmaceutical and cosmetic manufacturers from both domestic and international markets will attend, engaging in active business discussions with exhibiting companies. We will be exhibiting at Interphex Japan 2023. Scheduled Exhibits: - Air-driven stirrers - Electric stirrers - Air-driven diaphragm pumps, etc. We plan to showcase stirrers and one-nut pumps that have received great acclaim from cosmetic and pharmaceutical manufacturers. We will introduce products with sanitary specifications.

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The 24th Interphex Japan

  • Seminar・Event

We plan to exhibit at Interphex Japan, held at Tokyo Big Sight from July 13 (Wednesday) to 15 (Friday), 2022. We will showcase products for the pharmaceutical and cosmetic industries, as well as for food and chemical industries. - Air motor stirrer - Electric stirrer - Air radial piston motor - Air-driven diaphragm pump, etc.

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[Exhibition Participation] FOOMA JAPAN 2022 [Tokyo Big Sight]

  • Seminar・Event

FOOMA JAPAN 2022 International Food Industry Exhibition June 7 (Tuesday) - June 10 (Friday), 2022 Tokyo Big Sight We will be exhibiting. Booth number: 5K-29 Sanitary one-nut pump Air motor mixer Air radial piston motor, etc. We will be showcasing sanitary products for the food, cosmetics, and pharmaceutical industries. Please come visit us! If you would like an invitation, please feel free to contact us. mail@chuorika.co.jp

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Company information

中央理化

中央理化 本社

Industrial Machinery

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We are a manufacturer of air-driven stirrers and electric stirrers! We also handle micro-dosing pumps and air-driven diaphragm pumps. Today, both our stirrers and pumps are highly praised by users in the sanitary industry. Please leave the use of stirrers and pumps in clean and explosion-proof environments to us! We participate in exhibitions such as FOOMA and Interphex every year. We also offer free demonstration units and product introductions during visits!

Product/Service List (65)

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Examples of diaphragm pump applications: Transfer of corrosive and flammable chemicals in tankers.
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Examples of diaphragm pump applications: Transfer of corrosive and flammable chemicals in tankers.

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