Model: IRG vertical hot water circulation pump
The IRG is the hot water version of the vertical inline pump, for heating and boiler circulation. What changes from ISG and what to tell us when ordering.
| Flow Rate | Same hydraulic range as ISG |
|---|---|
| Head | Up to 128 m |
| Power | 0.55 to 250 kW |
| Inlet / Outlet Diameter | DN25 to DN400 |
| Material | Cast iron, seal for hot water |
Not sure this pump fits your duty? Try the pump selector
An IRG has the same hydraulics and the same model numbers as the ISG. The difference is inside: the seal and the elastomers are chosen for hot water, so the pump can circulate water from boilers and heating systems. In its standard form the IRG is used for hot water up to about 120 °C.
| ISG | IRG | |
|---|---|---|
| Liquid | Clean water at normal temperature | Hot water |
| Seal and elastomers | Standard | For hot water |
| Typical job | Supply, boosting, cooling water | Heating, boiler and hot water circulation |
| Hydraulics and sizes | Same | Same |
Two IRG40-160A pumps with 1.5 kW motors, rated 5.9 m³/h at 28 m, were part of an order we supplied to a machinery distributor, together with larger hot water pumps and cutter pumps for the same site. Small IRG frames like these are typical for building hot water loops.
Find the right frame in the selection table; the IRG uses the same model list as the ISG.
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