The Durco Mark 3 ISO pump range is fully compliant with ISO 2858 (dimensional) and ISO 5199 (design) criteria and is designed to offer end users the benefits of a price-competitive, high-efficiency, high-reliability pump incorporating many advanced design features. In developing the pump, the Flowserve design team combined state of the art hydraulic and modeling software with knowledge gained from more than 30 years of experience with its ANSI/ASME B73.1 stablemate, the Durco Mark 3 ANSI chemical process pump.

The exact pump types are:
1.5×1 LF-4, 1.5×1-6,3×1.5-6,3×12-6,1.5×1 LF-8,1.5×1-8, 3×1.5-8,3×2-8,4×3-8,
2×1LF-10,2×1-10A,3×1.5-10A,4×3-10,4×3-10H,6×4-10,6×4-10H,3×1.5-13,     3×2-13,4×3-13,4×3-13HH,6×4-13A,8×6-14A,10×8-14,6×4-16,8×6-16A,10×8-16,10×8-16H,10×8-17.