Semi-Open Impeller

Heavy duty monoblock centrifugal pumps.

Same interaxis of ISO 5199 chemical norm pump:

  • Easy interchangeability.
  • Casing and impeller manufactured with investment casting technology.
  • Standard IEC motor (different brand available) - stub shaft design.
  • Different seal execution and materials options available on request.



handling slightly contaminated liquids or non abrasive slurries in the chemical and petrochemical industries. Well suited for handling liquids with gas contents up to 10%.

They are also used in:
general industrial service, foodstuffs industry, dissolved air flotation systems, small evaporator plants, sugar industry, water/solvent recovery process, power stations, steel industry textile.



Fast facts


Discharge sizes:

Maximum working pressure:

Flow rate:

Differential head:




from DN 32 to DN 80

up to 8 bar - according to the pump size

up to 200 m3 /h

up to 60 m

up to 120°C - according to the pumped liquid

AISI 316

PN16 reduced thickness or DIN 11851 food connections

Selection Charts

HG 2 poles

HG 4 poles



Flanged 1

Food connections

Food connections 2

About Tapflo. Tapflo Group is an independent, family owned, European manufacturer and global supplier of Air operated diaphragm pumps, centrifugal pumps and other industrial process equipment. Tapflo is represented by own sales offices in 30 countries and by independent distributors in more than 45 countries.