IH Series Stainless Steel Chemical Pump

The IH series is a single-stage, single-suction cantilevered chemical centrifugal pump whose model designations, rated performance points and dimensions follow ISO 2858-1975 (E). It is published for corrosive, particle-free liquids whose viscosity is similar to water, and it delivers flow from 6.3 to 400 m³/h with heads from 5 to 125 m.

Medium temperature is published as typically below 80 °C; if a higher temperature has to be pumped, the manufacturer states that appropriate cooling measures are required first. Because the casing is rear-opening, the rotating assembly can be inspected after removing only the connecting component in the centre of the coupling, without dismantling the pump body, the piping or the motor.

Corrosion-resistant construction, a hydraulic design that is published as averaging about 5 percent higher efficiency than comparable traditional models, and a choice between packing and mechanical shaft sealing make the pump suitable for chemical, petroleum, power-engineering, metallurgical, paper, pharmaceutical and food duties.

• Chemical plants: Handles dilute acids, alkalis and process solutions that are free of solid particles.
• Pharmaceutical production: Circulates process liquids where corrosion-resistant stainless contact is required.
• Petroleum and petrochemical: Moves chemical process fluids whose viscosity is close to that of water.
• Power engineering: Serves as an auxiliary transfer pump on power-plant circuits.
• Metallurgical plants: Transfers corrosive process liquids in metallurgical operations.
• Paper mills: Pumps process water and chemical liquors that carry no solids.
• Food processing: Transfers food-grade liquids compatible with the wetted material.

1. Work from the duty point rather than the maximum: the published envelope is 6.3–400 m³/h at heads between 5 and 125 m, so one size normally covers several duties through impeller trim.
2. Keep the medium below the published 80 °C limit. If the process runs hotter, ask for the cooling measures the manufacturer specifies before ordering.
3. Confirm the liquid is free of solid particles and has a water-like viscosity; the series is not published for abrasive or highly viscous media.
4. Choose packing or mechanical sealing from the acceptable leakage at the shaft and from the risk that the liquid crystallises or sets.
5. Check the ISO 2858 footprint and port orientation against the available baseplate space, since the standard fixes the dimensions.
6. State the motor supply and whether the pump runs continuously or intermittently, so the motor rating matches the absorbed power.