What are the differences between IS and IH type centrifugal pumps?
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When choosing a solvent pump for normal pressure conditions, I’m not sure which type of centrifugal pump to select. For substances like toluene and ethyl acetate, is it sufficient to use a water pump, such as those of the IS or IH series? What are the differences between IS and IH type centrifugal pumps?
Strictly speaking, the IH and IS types are the first chemical centrifugal pumps developed in China; they are single-stage, single-suction cantilever centrifugal pumps that are commonly used for clean water. When used with acids, alkalis, or organic substances, it is important that the material contains no impurities, as otherwise it can cause problems. According to common understanding, IS is mostly used for urban water supply and similar purposes, with no strict distinction. If it’s difficult to distinguish, leave it to the supplier to handle it; sign a technical annex so that they can resolve it
The IS pump is a single-stage, single-suction, cantilevered centrifugal pump for clean water in China, designed in accordance with international standards； The material is generally cast iron. The IH pump is a single-stage, single-suction, cantilever-type chemical centrifugal pump designed in China in accordance with international standards ； The material for the overcurrent components can be various stainless steels such as 304, 306, etc.
The IS and IR series of single-stage, single-suction (axial intake) centrifugal pumps are designed for transporting clean water or other liquids with physical and chemical properties similar to those of water. The IS type can handle temperatures up to 80°C, while the IR type, being a hot water centrifugal pump, can handle temperatures up to 120°C. Primary uses: Suitable for industrial and urban water supply and drainage, as well as for agricultural irrigation and drainage. The IH type chemical pump can handle media at temperatures ranging from -20°C to 105°C; when necessary, a double-end face seal cooling system is used, allowing it to handle media at temperatures from 20°C to +280°C. It is suitable for use in industries such as chemicals, petroleum, metallurgy, power generation, papermaking, food processing, pharmaceuticals, environmental protection, wastewater treatment, and synthetic fibers, for transporting various corrosive or water-like media that cannot be contaminated.
May I ask where the statement that IR hot water pumps are suitable for media not exceeding 120°C comes from? Please let me know, thank you