This recent selection of Finish Thompson pumps is destined for installation in an industrial gas cleaning system, commonly known as a wet scrubber. These systems require robust equipment capable of handling aggressive chemicals like sodium hydroxide and sodium chloride, both in their initial form and after exposure to flue gases - when they may become more concentrated or chemically complex.

For the main scrubber recirculation units, we specified seal-less magnetically coupled centrifugal pumps from the Finish Thompson Ultrachem range - a reliable solution for challenging environments. With ETFE-lined ductile iron casings, and close coupled to 37 kW 2-pole motors, these units deliver an impressive 150 m³/hr at 40 m head.

No chemical installation feels complete without a trusted model from the Finish Thompson DB series. In this project, two DB15P polypropylene mag-drive centrifugal pumps were selected for NaOH transfer, paired with 3 kW 2-pole motors to deliver 11 m³/hr at 20m head.

This project is just one example of the expertise we bring to the alternative energy, chemical, and industrial sectors.

Finish Thompson magnet drive pump model UC438DOCSSSS71220 with 4” x 3” ANSI 150# flanges close coupled to 37 kW, 2 pole, 380 volt, 3 phase, 60 Hz, IE3, IP55 motor including thermistors and a 230 volt single phase anti-condensation heater on baseplate.

• Liquid - Aqueous Solution: 20% sodium hydroxide and in upset conditions potentially 20% sodium chloride, 20% sodium hypochlorite
• Flow Rate - 146 m³/hr
• Differential Head - 42 metres
• Viscosity - < 10 cP
• Temperature - 5.5 to 40.4°C ambient / 30 to 49.5°C operating
• NPSHA -  7.5 metres
• Wetted Materials - Dupont tefzel (ETFE) lined ductile, carbon fibre filled ETFE, alpha sintered silicon carbide, FFKM Simriz #485, neodymium iron boron magnets encapsulated in ETFE, moulded CF ETFE liner with aramid reinforced epoxy external shell

Finish Thompson magnet drive pump model DB15P-E-FF-10P-04 with 2" x 1½” ANSI 150# flanges close coupled to 3 kW 2 pole 380 volt, 3 phase, 60 Hz IE3 IP55 motor including thermistors and a 230 volt single phase anti-condensation heater on baseplate.

• Liquid - Aqueous Solution: 45% sodium hydroxide
• Flow Rate - 11 m³/hr
• Differential Head - 20 metres
• Viscosity - >70 cP
• Temperature - 5.5 to 40.4°C ambient / 15 to 30°C operating
• NPSHA 7.1 metres
• Wetted Materials - Polypropylene, high purity alumina ceramic, carbon graphite, EPDM, neodymium iron boron magnets encapsulated in unfilled polypropylene