四葉機械製作所 List of Products and Services

The "VP1 Series" is a Roots blower with a wide pressure range from negative pressure to 0.35 MPaG, equipped with a capacity adjustment function through speed control (0 to 100%). It features a casing and rotor that are water-cooled. The materials used for the gas-contact parts can include cast iron, stainless steel, and special alloys, and it can also accommodate Ni plating and PFA coating. It is possible to manufacture specifications tailored to applications and the characteristics of the intake fluid. If you are having trouble finding a blower or compressor that meets your needs, please feel free to consult us. 【Applications】 - Applications with large differential pressure or a wide capacity adjustment range - Pumping and suction of corrosive fluids - Pumping and suction of high-temperature gases, etc. *For more details, please refer to the PDF materials. Feel free to contact us with any inquiries.

• Air compressors, blowers and pumps

This document is an inquiry sheet from Yotsuba Machinery Co., Ltd. It includes specifications for items such as the "properties of the handling gas," including gas composition, molecular weight (or specific weight), and intake temperature, as well as "pressure" such as intake pressure and discharge pressure, and "driving force" such as motors and engines. Please make use of it. 【Items (excerpt)】 ■ Application ■ Properties of the handling gas ■ Airflow ■ Pressure ■ Installation location *For more details, please refer to the PDF document or feel free to contact us.

• pump

The "Roots Type Dry Vacuum Pump VP Series" is a corrosion-resistant pump that features a fluororesin lining with a thickness of over 150μm in the gas contact area. It is suitable for use with fluids such as hydrochloric acid, sulfuric acid, and nitric acid, which can corrode cast iron and stainless steel castings! Moreover, it is oil-free and resistant to contamination, eliminating the need for tasks such as draining cooling machines. It has a proven track record in the fields of reagent manufacturing and inorganic material testing. 【Features】 ■ Lower cost compared to ceramic liquid-sealed pumps ■ No sealing liquid required, ensuring stable performance and reduced running costs ■ Quick pump startup ■ Widely used in pharmaceuticals, reagents, pesticides, chemicals, high-performance materials, non-ferrous metals, and new materials ◎ For more details, please refer to the PDF document or feel free to contact us.

• Soil improvement material

The "FLB-MC Series" is a rotary blower that employs a magnetic coupling in the shaft penetration section, achieving a seal-less design. Since there is no shaft penetration section, it is leak-proof. It is suitable for applications where gas transfer is involved and leakage is not permitted. Additionally, the lifespan of the magnetic coupling is semi-permanent, reducing maintenance costs. 【Features】 ■ Compatible with various materials such as stainless steel, special cast steel, plating, and Teflon lining ■ Oil-free ■ Achieves long lifespan for the shaft sealing section *For more details, please download the catalog or contact us.

• Air compressors, blowers and pumps

The "Fluororesin Lining Construction Roots Type Dry Vacuum Pump" features a fluororesin lining with a thickness of over 150μm inside the vacuum pump. It suppresses corrosion caused by halogen gases and strongly acidic fluids used in chemical and food development. We have rental units available, so please feel free to contact us if you are interested. 【Features】 ■ Lower price than ceramic liquid-sealed pumps ■ No sealing liquid required, ensuring stable performance and reduced running costs ■ Quick pump startup ■ Suitable for pharmaceuticals, reagents, pesticides, chemicals, high-performance materials, non-ferrous metals, and new materials *For more details, please download the catalog or contact us.

• Soil improvement material

As a manufacturer specializing in rotary blowers, our company is committed to meeting your needs by utilizing the best manufacturing techniques under a new design policy. We have a wealth of experience in special applications, including the use of special materials such as stainless steel and the circulation of high-temperature and high-pressure gases. Please feel free to contact us.

• Air compressors, blowers and pumps

【Features】 ○ Recompression and reuse of flash steam ○ Pumping and boosting of steam ○ Contributes to energy saving, cost reduction, and simplification of processes

• Air compressors, blowers and pumps

Solving the problems of dry vacuum pumps! Large-capacity roots-type vacuum pump with jacket type 【Features】 ○ Compatible with solidification and polymerization inside the pump ○ Addresses scale adhesion in the jacket section ○ No waste liquid treatment costs as it does not use sealing liquid ○ Ideal for environmental measures such as ISO14001 and PRTR ○ Compact design with direct cooling method, eliminating the need for additional coolers ○ Supports cleaning within the casing ○ Optimal for CO, PSA, and solvent recovery

• Air compressors, blowers and pumps

The "VP Series" is a Roots-type vacuum pump that uses austenitic stainless steel (SCS13, 14, 16) with corrosion resistance for the gas contact parts. It is suitable for the suction of not only condensable gases but also corrosive gases. The inlet diameter (D1) ranges from 50 to 125 mm. 【Features】 ■ Capable of handling solidification and polymerization within the pump ■ Manufacturing with castable corrosion-resistant alloys (such as Ni-Cr-Mo alloys) is also possible ■ Selectable from five types according to usage conditions ■ Numerous successful implementations *For more details, please refer to the materials. Feel free to contact us as well.

• Air compressors, blowers and pumps