The manufacturing factory for diaphragm pumps has been completely renovated! We have released an introduction video for the new factory. We will expand our production capacity to meet customer needs.

We are currently offering a catalog introducing over 150 basic models of air-driven diaphragm pumps with intrinsic safety explosion-proof specifications.

From the ultra-compact model series 5, which is palm-sized, to the large series 80, we offer a total of 9 types, with 9 types of wetted materials and 7 types of diaphragm materials, providing over 150 basic models. It is possible to select models suitable for the usage conditions, and it can also transfer flammable liquids and liquids with abrasive elements. 【Features】 ■ Powered by compressed air, making it safe and eliminating the need for explosion-proof measures ■ Capable of transferring slurry liquids (liquids with solids and high abrasiveness) ■ Discharge volume can be adjusted and stopped by operating the air regulator ■ Fully self-priming, so no priming water is required ■ No mechanical seals, eliminating concerns about liquid leakage or failures due to dry running ■ Simple structure makes maintenance easy, and after-sales service is thorough. Fewer parts make maintenance straightforward. Equipped with a reset button to reduce downtime. 【Examples of Applications】 Recovery of waste liquids/sludge, transfer of factory wastewater, transfer of alcohol/ethanol, transfer of lubricants and hydraulic oils, paint supply to roll coaters, supply to filter presses. *For more details, please download the PDF or contact us. You can view the digest version from the 【Catalog Download】.

• Other pumps

High discharge volume! Air-driven diaphragm pump capable of transporting flammable liquids and solids.

The "NDP-40/50/80 series" is a large air-driven diaphragm pump that is ideal for various applications, such as oil plants and ceramic factories. [Main Industries] Chemical plants, ceramic factories, oil plants, chemical factories, and marine applications. [Diameter and Maximum Discharge Rate Reference*] NDP-40 Series Diameter 1-1/2" (40A), Maximum discharge rate approximately 400L/min NDP-50 Series Diameter 2" (50A), Maximum discharge rate approximately 600L/min NDP-80 Series Diameter 3" (80A), Maximum discharge rate approximately 800L/min *Values may vary depending on the wetted parts and diaphragm material. The maximum discharge rate indicates the pump's capacity. Please refer to the catalog for the actual flow rate range for your usage. For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Other pumps

A diaphragm pump made of PTFE resin that allows for the large supply of strong acids, strong alkalis, and other chemical solutions! Flow rate can be adjusted with a regulator, making it easy to operate.

The BTT series is a diaphragm pump designed for chemical applications, utilizing fluororesin in all wetted parts. It employs highly corrosion-resistant PTFE resin, enabling the large-scale supply of strong acids, strong alkalis, and other chemical liquids. It operates on compressed air and is designed to be intrinsically explosion-proof, ensuring safe use. Features: - The body and diaphragm materials are made of fluororesin (PTFE)! - Since fluororesin is used in all wetted parts, it allows for the transfer of strong acids and strong alkalis. - High performance with a discharge rate of 125L/min! (NDP-P25BTT) * The discharge rate is only a guideline and may vary depending on the operating conditions of the diaphragm pump. For more details, please contact us or download the catalog.

• Other pumps

Maximum discharge capacity of 840L/min*! A large model with a discharge diameter of 3 inches. Air-driven, suitable for various applications such as waste liquid recovery and the transfer of flammable liquids.

The "NDP-80 Series" is a large air-driven diaphragm pump, ideal for oil plants and marine applications. 【Features】 ■ Maximum flow rate of 840L/min (excluding models with fluororesin diaphragm and GF polypropylene body) ■ Selection of models suitable for operating conditions is possible with four types of body materials and nine types of diaphragm materials. ■ Capable of transferring slurry liquids (solids and highly abrasive liquids) due to the use of ball valves. 【Examples of Applications】 Collection of wastewater/sludge, transfer of factory wastewater, transfer of alcohol/ethanol, transfer of lubricating oil and hydraulic oil, paint supply to roll coaters, supply to filter presses. 【Main Specifications】 ○ Nominal diameter: 3" (80mm) ○ Operating air pressure: 0.2 to 0.7MPa ○ Maximum discharge pressure: 0.7MPa ○ Slurry limit (maximum passing particle diameter): less than 10mm 【The NDP-80 Series is made to order, so please be sure to check the delivery date.】 * The flow rate is only a guideline and may vary depending on materials, liquids being transferred, piping conditions, etc. * For more details, please refer to the materials and catalog. Feel free to contact us with any inquiries.

• Other pumps

In applications where high-precision pressure measurement is required, it is necessary to select the optimal product from a wide range of options. Our extensive product lineup, consisting of pressure transducers, pressure transmitters, and digital pressure gauges, covers almost all application fields. So, what is the best solution for your needs? Before starting product selection, it is important to clearly define and organize the requirements. This will make product research more efficient and facilitate smoother communication. Generally, requirements can be classified into two categories: - Essential (Must) requirements - Desirable (Nice-to-have) requirements It can generally be said that having fewer essential requirements makes it easier to find solutions and helps keep costs and delivery times down. However, to define these requirements, it is first necessary to comprehensively analyze the fundamental issues. Only with this foundation can the analysis results be transformed into clear requirements for the desired product. This requires knowledge of the characteristics of the products being considered for purchase. For more information, please refer to the related links below!

JOHNAN DMS will exhibit at the "DocoDemo Festival OSAKA" held in Namba, showcasing our "paper substrate mounting." This is a valuable opportunity to directly experience cutting-edge technology. Please feel free to consult us about any concerns regarding paper substrate mounting. ■ Venue: Namba Square, Nansan Street ■ Free admission. We look forward to your visit. DocoDemo Festival OSAKA: https://www.osaka.cci.or.jp/ddfes/ For information about our paper substrate mounting services, please visit our website. https://www.johnan.com/dms/mounting/paper/

"There are gods who discard and gods who pick up." This was a phrase my father often used when we went to a model train shop that dealt in second-hand items. It is truly the case that gifts, which have continued to receive abnormally low evaluations even from antique dealers and recycling shops, have found their way to someone who genuinely wanted them, and it is indeed a joy, truly embodying the saying "there are gods who discard and gods who pick up." For more details, please see the link below. https://mbp-japan.com/hyogo/banyohkagaku/column/5215455/

[Duration: Ongoing until March 31, 2026] Let's preserve our "now" in form. Please feel free to inquire, whether it's for classes, clubs, school units, or even among friends.

【Period: Ongoing until March 31, 2026】 Increase your store's fans! We will create original goods that will capture hearts! Please feel free to contact us.