ISG Series Vertical Inline Pipeline Pump

The ISG series is a vertical inline pipeline pump: the suction and discharge flanges sit on the same centreline, so the pump drops straight into the pipe run like a valve, with no base plate and no elbow offsets.

Flow covers 1.6–1200 m³/h with heads of 5–125 m and motor power from 0.18 to 132 kW, and it handles liquids from -20°C to 120°C.

Because the impeller is mounted directly on the extended motor shaft and the rotor can be lifted out by unbolting the casing, installation and maintenance are simple and the piping does not have to be dismantled.

It is the usual choice for HVAC and refrigeration circulation, hot-water and district-heating loops, high-rise water supply, fire-water pressure maintenance and industrial process lines.

• Seal: a hard alloy wear-resistant mechanical seal replaces the packing of older centrifugal pumps, which cuts leakage, extends service life and keeps the pump area clean.
• Impeller & shaft: the impeller is mounted directly on the extended motor shaft and balanced statically and dynamically for low noise and vibration; the pump and motor bearing arrangement is optimised to balance radial and axial loads.
• Bearings & motor: low-noise motor bearings, with the motor mounted on top of the inline casing.
• Casing & ports: inlet and outlet are aligned on the same centreline so the pump installs at any position in the line, like a valve; a rain cover is available for outdoor installation.
• Body material: selected for clear water and liquids with similar physical and chemical properties — confirm suitability for other media.
• Maintenance & arrangement: the rotor assembly lifts out by unbolting the pump casing without disturbing the piping, and units can be run in series or parallel for specific flow and head requirements.

• Pipeline boosting: raises pressure in long pipeline runs and keeps flow steady along the line.
• HVAC and refrigeration circulation: circulates chilled and heating water in building services and refrigeration cycles.
• District heating and hot water: serves hot-water circulation and district-heating loops within the -20°C to 120°C range.
• High-rise water supply: boosts water supply for upper floors and pressurised building services.
• Fire water: supports fire-fighting pressure and fire-water pressure maintenance.
• Industrial and municipal water: water supply and drainage, garden irrigation and long-distance transmission.
• Process lines: maintains flow and pressure in industrial process lines handling water-like liquids.

• Confirm the pipe diameter, flange standard and layout, because the inline body fits directly into the run and replaces a section of pipe.
• Select motor power within the 0.18 to 132 kW range from the required flow and head, and check the duty point against the published curve.
• Check that the liquid temperature stays within -20°C to 120°C for the standard construction.
• Verify NPSH available at the inlet to avoid cavitation, particularly on suction-lifted or high-temperature duties.
• Allow headroom above the pump for lifting the motor and rotor assembly during maintenance.
• Confirm whether the installation is indoors or outdoors, and add the rain cover if it is exposed.