Tandem mechanical seal. A double seal structure with an additional mechanical seal layered on top of the mechanical seal.
"WJMU" is a rotary pump of the tandem mechanical seal type. It features a double seal with an additional mechanical seal for enhanced sealing. Between the double mechanical seals, sealing water can be circulated. Various special specifications are possible, including mechanical seals, rotor shapes, and O-rings, allowing it to handle a wide range of transfer liquids with different properties. It is particularly suitable for liquids that "solidify when exposed to air," "contain slurries," and "are harmful if leaked externally." 【Features】 ■ Sanitary design ■ Easy to disassemble and clean ■ Capable of transferring liquids from low to high viscosity ■ Transfers liquids without damaging solid particles within the product ■ Maximum discharge pressure of 1.0 MPa (standard specification) *For more details, please refer to the PDF document or feel free to contact us.
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【Other Features】 ■ Heat resistance temperature 95°C (standard specification) ■ Capable of forward and reverse rotation ■ Can be used as a self-priming pump for extracting from a negative pressure tank ■ Quantitative performance ■ High versatility ■ Features of outside mechanical seal - Seals fluid trying to leak from the inner circumference to the outer circumference of the sliding surface - Excellent durability and slurry resistance as the spring does not come into contact with the fluid - Structure with fewer wetted parts, making disassembly and cleaning easy - Tends to leak more easily compared to the inside mechanical seal "JM type" as the leakage direction is the same as the centrifugal force direction * For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Applications (Excerpt)】 ■ Food: Tomato juice, concentrated tomatoes, tomato paste, ketchup ■ Food (with solid contents): Meat sauce, curry, juice with mandarin pulp ■ Food (can be transported with a pump unit equipped with a pushing device): Fruit pulp, okara ■ Cosmetics: Cream, lotion, tonic, shampoo, conditioner, soap ■ Pharmaceuticals: Artificial blood, artificial proteins, cod liver oil, vitamin oil, pure substances, drinkable solutions ■ Other liquids: Paint, ink, petroleum products, glue, emulsions, adhesives *For more details, please refer to the PDF materials or feel free to contact us.
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Company information
Nakakin Co., Ltd. was founded in 1950 and began its history as a casting manufacturer. Nakakin Pumps consistently produces everything from parts manufacturing to product assembly in-house. Through the development of special materials such as "Nakamura Metal No. 3" and our unique processing technologies, we have been able to deliver stable, high-quality products to the market. While we incorporate the latest technologies and equipment, we also respect the skills of "people." This is because we have reached one conclusion through years of experience and trial and error: "The technology of human hands is more high-performing than any latest equipment." We take the time and effort to create and inspect our products. Through this repetition, we continue to provide stable, high-quality products. We are also expanding overseas and increasing our achievements. We have a European sales office in Germany and a subsidiary in Indonesia, delivering products and services that cater to our customers' needs.
