Because Duriron is brittle, operation and maintenance differ from standard ANSI pumps.
| Material | Abrasion Resistance | Corrosion Resistance (Oxidizing Acids) | Toughness | Cost | | :--- | :--- | :--- | :--- | :--- | | | Excellent (520 BHN) | Excellent | Poor (Brittle) | Medium | | 316 Stainless | Poor (150 BHN) | Good | Excellent | Low | | CD4MCu (Duplex) | Good (250 BHN) | Very Good | Excellent | Medium | | High Chrome Alloy (A05) | Excellent (600 BHN) | Poor (in acids) | Medium | Medium | | Rubber-Lined | Good (fine slurry) | Good | Medium | Medium | duriron pump
To reduce axial thrust and keep solids away from the stuffing box, the back shroud of the impeller often features "pumping vanes." This creates a hydraulic seal that reduces gland pressure and extends packing or mechanical seal life. Because Duriron is brittle, operation and maintenance differ
How does a Duriron pump compare to other materials for severe service? Because Duriron is brittle