四葉機械製作所 List of Products and Services

By combining our product "VP-SFM5 Series" with a booster, it has become possible to increase the pressure of special gases, which were previously considered difficult, to 200-550 Kpa. **Introduction to the VP-SFM5 Series** The VP-SF5M type compressor is a multi-stage roots compressor that employs unique cooling technology. By circulating cooling water not only through the casing and jacket but also through the rotating rotor, it removes the heat generated during compression, achieving stable operation. It realizes discharge pressures that are difficult to achieve with a two-stage roots blower and has the potential to maintain stable discharge pressure even when the intake is under negative pressure. Capacity adjustment is performed through rotational control via an inverter (0-100%), allowing for energy-saving operation by varying according to user conditions. *For the VP-SFM5 Series, we have a catalog available, so if you are interested, please feel free to download it or contact us.*

• Vacuum pump

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 is compatible with Ni plating and PFA coating. Custom specifications can be manufactured to match the application and 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 pressures 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 document. Feel free to contact us with any inquiries.

• Vacuum pump

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 delivery 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.

• pump

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

• pump

Solving the issues of dry vacuum pumps! Large-capacity Roots-type vacuum pump with a jacket design 【Features】 ○ Addresses solidification and polymerization inside the pump ○ Prevents scale adhesion in the jacket section ○ No waste liquid treatment costs as it does not use sealing liquid ○ Ideal for environmental measures such as ISO 14001 and PRTR ○ Compact design with direct cooling method, eliminating the need for additional coolers ○ Supports cleaning inside the casing ○ Optimal for CO, PSA, and solvent recovery

• pump

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 capable of handling not only condensable gases but also corrosive gases. The inlet diameter (D1) ranges from 50 to 125 mm. 【Features】 ■ Compatible with solidification and polymerization inside the pump ■ Can be manufactured using castable corrosion-resistant alloys (such as Ni-Cr-Mo alloys) ■ Available in five types to suit various operating conditions ■ Many successful implementations *For more details, please refer to the documentation. Feel free to contact us with any inquiries.

• Vacuum pump

This document is an inquiry sheet from Yotsuba Machinery Manufacturing Co., Ltd. It includes specifications for items such as the "properties of handling gases," 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 handling gases ■ Airflow ■ Pressure ■ Installation location *For more details, please refer to the PDF document or feel free to contact us.

• Vacuum pump

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 capable of handling not only condensable gases but also corrosive gases. The inlet diameter (D1) ranges from 50 to 125 mm. 【Features】 ■ Compatible with solidification and polymerization inside the pump ■ Can be manufactured using castable corrosion-resistant alloys (such as Ni-Cr-Mo alloys) ■ Available in five types to suit various operating conditions ■ Numerous successful implementations *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Other pumps

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 would 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.

• Other pumps

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-free. It is suitable for applications where leakage is not permitted, such as gas pressure delivery. 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.

• Other physicochemical equipment

A rotary blower that employs a magnetic coupling at the shaft penetration part, achieving a seal-less design. By eliminating the shaft penetration part, gas leakage is resolved. It is suitable for use in severe environments where leakage is not permitted. 【Benefits】 - Can be used in severe environments such as nuclear-related applications where gas leakage is not allowed. - The lifespan of the magnetic coupling is semi-permanent. - Maintenance costs can be reduced due to extended lifespan. ◎ For more details, please refer to the PDF document or feel free to contact us.

• Vacuum Equipment

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, resulting in stable performance and reduced running costs ■ Quick pump startup ■ Suitable for pharmaceuticals, reagents, pesticides, chemicals, high-performance materials, non-ferrous metals, and new materials, etc. *For more details, please download the catalog or contact us.

• Other pumps

The Roots-type dry vacuum pump VP series features a fluororesin lining in the gas contact area. The thickness of the fluororesin lining is over 150μm, providing durability against halogen gases and strong acidic gases. It can be utilized in applications such as reagents, agriculture, chemicals, and high-performance materials. 【VP4 Series Lineup】 ■VP4-501 ■VP4-651 ■VP4-801 For more details, please contact us or download the catalog.

• Vacuum pump

The VP-SF5M type compressor is a multi-stage roots compressor that employs unique cooling technology. By circulating cooling water not only in the casing and jacket but also through the rotating rotor, it removes the heat generated during compression, achieving stable operation. It realizes discharge pressures that are difficult to achieve with a two-stage roots blower and has the potential to maintain stable discharge pressure even under negative pressure conditions. Capacity adjustment is performed through rotational control via an inverter (0-100%), allowing for variable operation based on user conditions, which enables energy-saving operation by reducing power consumption. *We have additional materials available, so please contact us.

• Vacuum pump

Currently, the applications of the fluid being used are expanding to various gases. As a manufacturer specializing in rotary blowers, we are striving to meet your needs by utilizing the best manufacturing techniques under a new design policy.

• Other processing machines

Currently, the applications of the fluids used are expanding to various gases. As a manufacturer specializing in rotary blowers, we are striving to meet your needs by utilizing the best manufacturing techniques under a new design policy.

• Other processing machines

Currently, the applications of the fluids used are expanding to various gases. As a manufacturer specializing in rotary blowers, we are striving to meet your needs by utilizing the best manufacturing techniques under a new design policy.

• Other processing machines

Currently, the applications of the fluids used are expanding to various gases. As a manufacturer specializing in rotary blowers, we are striving to meet your needs by utilizing the best manufacturing techniques under a new design policy.

• Other processing machines

Currently, the applications of the fluid being used are expanding to various gases. As a manufacturer specializing in rotary blowers, we are striving to meet your needs by utilizing the best manufacturing techniques under a new design policy.

• Other processing machines

Currently, the applications of the fluid being used are expanding to various gases. As a manufacturer specializing in rotary blowers, we are striving to meet your needs by utilizing the best manufacturing techniques under a new design policy.

• Other processing machines

Exhaust can achieve a clean vacuum without containing sealing water or sealing oil, similar to a sealed liquid vacuum pump. It operates throughout the entire range from atmospheric pressure to the inlet shut-off using a Roots type, focusing on ease of use.

• Vacuum pump

Exhaust can achieve a clean vacuum without containing sealing water or sealing oil, similar to a sealed liquid vacuum pump. It operates across the entire range from atmospheric pressure to the inlet shut-off using a Roots type, pursuing ease of use.

• Vacuum pump

Exhaust can achieve a clean vacuum without containing sealing water or sealing oil, similar to a sealed liquid vacuum pump. It operates across the entire range from atmospheric pressure to the inlet shut-off using a Roots type, focusing on ease of use.

• Vacuum pump

Exhaust can achieve a clean vacuum without containing sealing water or sealing oil, similar to a sealed liquid vacuum pump. It operates throughout the entire range from atmospheric pressure to the inlet shut-off using a Roots type, focusing on ease of use.

• Vacuum pump

Exhaust can achieve a clean vacuum without containing sealing water or sealing oil, similar to a sealed liquid vacuum pump. It operates across the entire range from atmospheric pressure to the inlet shut-off using a Roots type, pursuing ease of use.

• Vacuum pump

Exhaust can achieve a clean vacuum without containing sealing water or sealing oil, similar to a sealed liquid vacuum pump. It operates throughout the entire range from atmospheric pressure to the inlet shut-off using a Roots type, pursuing ease of use.

• Vacuum pump

Exhaust can achieve a clean vacuum without containing sealing water or sealing oil, similar to a sealed liquid vacuum pump. It operates over the entire range from atmospheric pressure to the inlet shut-off using a Roots type, focusing on ease of use.

• Vacuum pump

Exhaust can achieve a clean vacuum without containing sealing water or sealing oil, similar to a sealed liquid vacuum pump. It operates across the entire range from atmospheric pressure to the inlet shut-off using a Roots type, pursuing ease of use.

• Vacuum pump

The VP-type vacuum pump is a multi-stage roots dry vacuum pump that employs a cooling technology unmatched by other companies. The YKS direct inlet-target cooling method, which achieves tight operation in a roots configuration and enables high vacuum pumping, is a new cooling technology developed based on unique technology. In a roots vacuum pump, the rotors and the casing rotate without contact while maintaining a slight clearance. This results in the significant feature of being a "dry, oil-free type." However, the slight clearance necessary for non-contact rotation can decrease due to thermal expansion caused by gas compression heat, leading to eventual contact unless the rotors can remove the compression heat. Our developed direct inlet-target cooling method adopts a structure that directly cools the interior of the rotor with a coolant, thereby maintaining a constant clearance and stable vacuum level while providing numerous excellent features. In traditional cooling methods, the production of stainless steel vacuum pumps was impossible due to the large thermal expansion rate. By leveraging the excellent features of the direct cooling method, we have successfully developed a stainless steel vacuum pump that offers outstanding performance for the suction of corrosive gases.

• Vacuum pump

Y.K.S has developed advanced technology for medium-pressure and medium-capacity compressors (blowers) used in various industries over many years, creating products that exceed conventional standards. Our high-temperature, high-pressure rotary blower is designed to transport gas with high energy without wasting it, allowing for direct delivery.

• Other physicochemical equipment

We have a proven track record of supplying dry roots vacuum pumps that utilize a unique cooling method to adopt austenitic stainless steel (SCS13, 14, 16), which is considered difficult due to its high thermal expansion rate, for the gas-contacting parts. Additionally, we can also manufacture castable corrosion-resistant alloys (such as Ni-Cr-Mo alloys). Users facing corrosion issues are encouraged to consider our solutions.

• Vacuum pump

【Features】 - Supports 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 multiple coolers - Supports cleaning inside the casing - Optimal for CO, PSA, and solvent recovery

• Vacuum pump

Multi-stage Roots-type vacuum pump using unique cooling technology from Yotsuba Machinery Manufacturing Co., Ltd. 【Features】 ○ Clean vacuum without sealing water or sealing oil in the exhaust ○ Operates across the entire range from atmospheric pressure to inlet shut-off with a Roots design ○ Direct cooling method developed based on proprietary technology Removes compression heat directly from the rotating rotor and casing jacket using coolant Maintains a constant clearance and stable vacuum level ○ Compatible with condensable gases ○ Supports solidification and polymerization within the pump ○ Addresses scale adhesion in the jacket section ○ No waste liquid treatment costs as no sealing liquid is used ○ Ideal for environmental measures such as ISO 14001 and PRTR ○ Compact design as each stage cooler is unnecessary due to direct cooling method ○ Capable of cleaning inside the casing.

• Vacuum pump

The FLB type rotary blower is a medium-pressure, medium-capacity compressor used for gas transport. Currently, the fluids used have expanded to various gases. As a manufacturer specializing in rotary blowers, we are committed to meeting your needs by utilizing the best manufacturing techniques under a new design policy.

• Other processing machines

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

• Other processing machines

Our FLB type rotary blower is a medium-pressure, medium-capacity compressor used for gas transport. Currently, the fluids used are expanding into various gases. As a manufacturer specializing in rotary blowers, we strive to meet your needs by utilizing the best manufacturing techniques under a new design policy. We have a wealth of delivery records for special applications, including special materials such as stainless steel and the circulation of high-temperature and high-pressure gases. 【Features】 ○ Achieves an intake temperature of 450°C ○ Significantly contributes to energy savings, cost reduction, and simplification of processes ○ We will select the most suitable machine for your plans.

• Other pumps

A dry vacuum pump that uses austenitic stainless steel (SCS13, 14, 16) with a high thermal expansion rate for the gas connection components, utilizing a unique cooling method.

• Vacuum pump

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 ■ Can be manufactured using castable corrosion-resistant alloys (such as Ni-Cr-Mo alloys) ■ Available in five types to choose from based on usage conditions ■ Numerous successful implementations *For more details, please refer to the materials. Feel free to contact us with any inquiries.

• Other pumps