Designed to be fully interchangeable with the Ahlstrom APP31-10S / APT31-4.

This Open Impeller is made from the equivalent/superior material used by the leading brands of Process Pumps manufacturers.

AUSSTAR* is not affiliated nor a distributor for any pump company mentioned. (Example: Sulzer™ APP/APT range or Ahlstrom APP/APT range). The pumps and pump parts manufactured or supplied by us are not associated with, endorsed by, or sponsored or manufactured by the owners of the related trademarks, given into this website or other documents. Any use of OEM names, trademarks or other information is for reference only.