Do you have concerns about choosing a pump, such as 'I want a model equivalent to the pump I'm currently using,' 'How durable is it?' or 'I want to try it, but I'm worried about cavitation'?

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

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

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 "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without affecting the base material with heat. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

● The production time for cast prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly producing sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or varying dimensions, can be molded at the same time in one molding process. This allows for the verification of multiple types in a short period.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

● The production time for casting prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly creating sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or variations in dimensions, can be created in a single molding process. This allows for the verification of multiple types in a short period.