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

Easy installation by simply connecting to the air hose in the factory! It can also transport slurry and chemicals! There are also highly corrosion-resistant diaphragm pumps available.

First, why not try Yamada's diaphragm pump? We are currently running a 30-day free trial campaign for the diaphragm pump in a real usage environment! *Until the end of March 2025* Please check the link at the bottom of the page for campaign details. 【Features of Yamada Diaphragm Pump】 ■ Easy to install: Simply connect to the air hose in the factory for easy setup ■ Easy to operate: Flow rate can be adjusted as easily as turning on a faucet ■ Easy to maintain: Simple structure with fewer parts makes maintenance easy ■ Wide range of sizes: From handheld compact models to large models with a discharge level of up to approximately 840L/min, we offer a wide lineup ■ Versatile applications: Can be used regardless of the type of fluid. ⇒ Suitable for waste oil, wastewater, liquids mixed with sediment, paints and solvents, ceramic glazes, and alcohol disinfectants. *It is intrinsically explosion-proof, making it safe for use in petroleum refineries and chemical plants. For product details, please refer to the PDF download. For details and applications for the diaphragm pump free trial campaign, please use the link below.

• Positive Displacement Pump

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

The glass pot lid has a hydrophilic heat-resistant coating, allowing you to check the cooking state without any fogging.

Explosion-proof motors available in stock We will deliver within 7 days to meet your delivery schedule. 【What is an explosion-proof motor?】 In factories and plants, flammable gases and vapors are present. When these mix with air and come into contact with an ignition source, an explosion or fire can occur. This motor is designed with measures to eliminate such ignition sources. 【Available stock models】 ■ Pressure-resistant explosion-proof motors, explosion-proof grade d2G4 - Foot-mounted type, output 0.4 to 3.7 kW, 4 poles - Flange type, output 0.4 to 0.75 kW, 4 poles ■ Increased safety explosion-proof motors, explosion-proof grade eG3 - Foot-mounted type, output 0.2 to 0.75 kW, 2 and 4 poles - Flange type, output 0.2 to 0.75 kW, 2 and 4 poles

As part of the "Hometown Ibara Future Creation Human Resource Development Project," we welcomed local elementary and middle school students to the special summer program "Ibara Job Exploration Tour 2025," a collaboration between the Ibara City Chamber of Commerce and the Corporate Branding Committee. We conducted a presentation that clearly and enjoyably introduced how our technology supports society, allowing the children to learn about the appeal of manufacturing and the significance of working while interacting with actual devices and products. Through this initiative, we hope to deepen our connection with the community and nurture the curiosity of the children who will carry the future. We sincerely thank everyone who participated, as well as all those involved in planning and organizing the event.

We will disclose the interim financial results for the fiscal period ending December 2025.

We would like to inform you that our company has recorded a special loss (executive retirement benefits) for the first half of the fiscal year ending December 2025, as detailed below. Furthermore, the payment of executive retirement benefits was approved at the "51st Annual General Meeting of Shareholders" held on March 28, 2025. 1. Recording of Special Loss In recognition of the long-standing contributions of one retiring director, we have recorded a special loss of 14,045 thousand yen as executive retirement benefits. 2. Impact on Performance The impact of this matter on the performance forecast for the fiscal year ending December 2025 is minimal. End.