Website Renewal! Celebrating 122 Years, when it comes to dry vacuum pumps and rotary blowers, think of Unosawa Iron Works.

Energy-saving and maintenance-free! Compact air-cooled dry vacuum pump for clean processes.

The "KTS type" is a lightweight and compact air-cooled dry vacuum pump. Due to its durable roots design, it has a long maintenance cycle and can also exhaust water vapor. It is ideal for non-corrosive gas applications that require a clean vacuum with high reliability and no oil back-diffusion. 【Features】 ○ Clean vacuum ○ Air-cooled ○ Lightweight and compact ○ Strong against water vapor and mist ○ Low noise and low vibration For more details, please contact us or download the catalog.

• Air compressors, blowers and pumps

Multi-purpose series! Rotary blowers developed based on extensive experience and achievements.

The ARJ type is a rotary blower (Roots blower) that incorporates a three-lobe rotor and brings together the technology of Unosawa Kogyo Co., Ltd. with the aim of achieving high performance, low noise, and low vibration. This series is highly standardized and can be widely used from low pressure to high pressure and from low flow rates to high flow rates. It also accommodates special gases, low-temperature fluids, and high-temperature fluids. 【Features】 ○ High reliability ○ Support for special specifications ○ Selection of optimal shaft sealing structure ○ Support for special materials and surface treatments ○ Support for high-pressure specifications For more details, please contact us or download the catalog.

• Ventilation and smoke exhaust equipment

Extremely robust against condensate! Vertical dry vacuum pump for chemical processes.

The "TRV Series" is a versatile dry vacuum pump (Roots vacuum pump) uniquely developed as a vacuum pump that is strong against condensable gases. The gas flow path is arranged to flow from the top to the bottom in a Down-Flow manner, allowing mist and liquids condensed inside the pump, which are drawn in with the gas, to easily flow down to the discharge port and be expelled or collected under atmospheric pressure. Therefore, it is an extremely robust pump against the inflow of mist and condensate from gases. In addition to the standard FC material, corrosion-resistant materials are also available for selection. 【Features】 ○ Strong against liquids ○ Energy-saving and high-performance design ○ Low temperature rise ○ Capable of drawing high-temperature gases ○ Small installation footprint For more details, please contact us or download the catalog.

• Piping and insulation

Ideal for the suction of condensable gases! General-purpose dry vacuum pump for chemical processes.

The "TRM Series" is a general-purpose dry vacuum pump (Roots vacuum pump) with many years of experience and numerous achievements. It can operate efficiently and stably at a consistent temperature thanks to an intermediate cooler. Additionally, it is capable of recovering condensed liquids such as solvents and is suitable for suctioning condensable gases in processes like vacuum drying, distillation, and degassing. The dry vacuum pump can cover a wide range of pumping speeds from approximately 2m³/min to 35m³/min, and it can also accommodate special specifications made from corrosion-resistant materials such as stainless steel. 【Features】 ○ Wide operating range ○ Completely dry ○ No water contamination ○ Long-term continuous operation For more details, please contact us or download the catalog.

• Ventilation and smoke exhaust equipment

Many achievements in various shaft seals such as mechanical seals and dry gas seals!

The ARJ type is a rotary blower (Roots blower) that incorporates a three-lobe rotor and combines the technology of Unosawa Iron Works Co., Ltd. to achieve high performance, low noise, and low vibration. This series is highly standardized and can be widely used from low pressure to high pressure and from small airflow to large airflow. It also accommodates special gases, low-temperature fluids, and high-temperature fluids. 【Features】 ○ High reliability ○ Support for special specifications ○ Selection of optimal shaft sealing structure ○ Support for special materials and surface treatments ○ Support for high-pressure specifications For more details, please contact us or download the catalog.

• Water Treatment Plant

Kort Valuta Inc. (Headquarters: Shibuya-ku, Tokyo; President & CEO: Hideki Shibata; hereinafter “the Company”) announces that it has renewed the user interface (UI) of TwooCa, the Company’s digital employee ID with Visa payment functionality.

Kort Valuta Inc. (Headquarters: Shibuya-ku, Tokyo; CEO: Hideki Shibata) is pleased to announcethat NBS Logisol Co., Ltd. (Headquarters: Hita City, Oita Prefecture; CEO: Itsuro Kono) has introduced “TwooCa,”a Visa-enabled digital employee ID card, for approximately 1,100 employees.

An article about the resin-based lightweight formwork system "PERI DUO" has been published in the "Construction News" (November 7, 2025)! "PERI DUO" is a new system formwork made of resin that can be used for walls. It is made from a newly developed material called "Politec," which is high-strength and lightweight. With fewer components, it is easy to handle. It allows for increased reuse and is an environmentally friendly lightweight formwork that is flexible on the construction site! 【DUO Product Features】 ■ New system formwork made of resin ■ High strength and lightweight ■ Fewer components and easy to handle ■ 100% recyclable *For more details about this product, please feel free to contact us. PERI Japan Co., Ltd.

We are pleased to announce that the "Kuji Regional Renewable Energy Circulation Project" in Kuji City, Iwate Prefecture, has received an Excellence Award at the 2025 Solar Week Awards organized by the Japan Photovoltaic Energy Association. The "Solar Week Awards" recognize initiatives and projects that contribute to the community, are desired by the community, and serve as models for the expansion of solar power generation. On July 24, 2025, NGK Insulators, Ltd. issued a press release titled "Start of Operation of Solar Power Generation Equipment at Hybrid Storage Facility with Sharing Function - Ceremony Held at Solar Power Plant Operated by Iwate Bank Group Company." This demonstration of the hybrid storage facility with sharing function (StorageHub) is being conducted by manorda Iwate, a regional trading company fully funded by Iwate Bank, with development led by NR-Power Lab Co., Ltd. NR-Power Lab Co., Ltd. is leading the design, development, and system operation of the StorageHub in this project. We will continue to collaborate with our partner companies to engage in technological development and the creation of advanced services aimed at realizing a sustainable local community.

The IFEMA exhibition center in Madrid is already prepared! Grace Solar warmly invites everyone to the Genera exhibition on November 18, where we look forward to seeing the future of solar mounting technology together. As Spain and Europe accelerate their transition to renewable energy, we will present our entire series of durable solutions: ✔️ Intelligent Tracker System — Smart technology designed to achieve maximum power generation across diverse terrains ✔️ Ground Mounting System — Provides a solid foundation for large-scale solar power plants ✔️ Roof Mounting System — A multifunctional penetration prevention solution applicable to commercial and industrial roofs Please visit us at booth H3D01. This is an opportunity to interact directly with our technology experts, see live demonstrations of our products, and gather information to build a solid foundation for your next project. Venue: IFEMA Exhibition Center, Madrid, Spain Date: November 18-20, 2025