Flowserve® Pumps, a name that’s set the standard in chemical process pumps since 1912, are engineered for the toughest corrosive, abrasive, and high-heat services in the plant. The Durco Mark 2, Mark 3, and Mark 3 “US” Self-Primer lines are the benchmark ANSI/ASME B73 process pumps — rugged, easy to maintain, and built to run for decades when they’re kept in good hands.

The Rueck Company stocks and manufactures replacement parts and complete pump packages for Durco models — along with the Worthington FRBH, CNG and Ingersoll Rand lines Flowserve inherited — so you’re never stuck waiting on a single source. Our parts meet or beat OEM tolerances and materials at up to 50% off OEM retail, and if a part’s gone obsolete, we’ll custom-make it so you never have to re-engineer your process around someone else’s discontinued design.