IS Series End-Suction Centrifugal Pump

The IS series is a single-stage, end-suction horizontal centrifugal pump built for clean water and for liquids whose physical and chemical properties are close to water, at a temperature not exceeding 80°C. It covers 6.3-400 m³/h against heads of 5-125 m, which places it in municipal and industrial water supply, drainage, agricultural irrigation, fire-fighting pressurisation and long-distance transfer duty. The pump body uses a rear-door opening design, so the rotating assembly can be reached without dismantling the suction and discharge pipework. It is driven by an electric motor through a coupling, with a diesel engine alternative where site power is limited, and the shaft seal is supplied as either soft packing or a mechanical seal. Bearings run in an oil-lubricated suspension housing, and the main parts are the pump body, pump cover, impeller, shaft, sealing ring, shaft sleeve and suspension bearing.

The table lists the published IS series models with their rated duty point in each casing size. Confirm the impeller trim and motor power against your own duty point when ordering.

• Municipal water supply: Moves clean water through distribution mains and booster networks.
• Industrial water transfer: Supplies process water in papermaking, metallurgy, electroplating and smelting plants.
• Agricultural irrigation: Draws from canals, reservoirs and wells into irrigation systems.
• Fire-fighting pressurisation: Holds pressure in fire main and sprinkler systems.
• Long-distance conveyance: Transfers water over long runs where the duty point is fixed.
• Food and pharmaceutical water: Handles clean process water in food processing and pharmaceutical plants.

• Select the model from the required duty point - flow and head together - because an end-suction pump is most efficient close to its rated point.
• Compare the listed motor power with the shaft power at your duty; too little margin will overload the motor.
• Keep the pumped liquid inside the published 80°C limit and free of abrasive solids and fibres.
• Check the NPSH available on site against the suction requirement, especially where the suction line is long or the lift is high.
• State voltage, frequency, drive type (motor or diesel) and whether packing or a mechanical seal is preferred.