Durco® Mark 3™ Group 4 High Capacity Metallic Sealed Chemical Process Pump
The Durco Mark 3 Group 4 pump provides increased capacity with proven Durco performance and reliability, along with ASME B73.1 design features. With flow rates up to 3861 m3/h (17,000 US gpm) tha are well beyond ASME size limits, the Durco Mark 3 Group 4 is ideal for high-flow, high-head applications in the chemical processing and general industries.
... Read more Read less- Reverse vane impeller provides repeatable pump performance throughout pump life. Open impellers are also available
- Durco SealSentry seal chambers use flow modifiers to extend seal life by providing optimal seal chamber environments
- Standard sealed bearing housing with labyrinth bearing isolators keeps lubricant in and contaminants out
- Two-piece power end with heavy-duty radial and thrust bearings reduces maintenance costs and supports long life and reliability
- External micrometer impeller adjustment sets clearance in 20 seconds, while rugged shaft and bearing design extends life and reduces deflection and vibration
Single stage, overhung, centrifugal pump designed to ASME B73.1 Standards. Hydraulic performance, NPSH and vibration testing per Hydraulic Institute (HI) standards. CE/ATEX Conformance.
• Flows to 3861 m3/h (17 000 gpm)
• Heads to 125 m (410 ft)
• Discharge pressures to 19 bar (275 psi)
• Temperatures from -73°C to 204°C (-100°F to 400°F); ductile iron: -29°C to 204°C (-20°F to 400°F)
The expanded hydraulic range of the Durco Mark 3 Group 4 comprises 13 sizes on two bearing frame platforms:

- 41K12x10-16
- 41K14x14-16
- 41K8x4-19
- 41K8x6-19
- 41K10x6-19
- 41K12x10-19
- 41K14x12-19
- 42K10x8-19
- 42K16x16-19
- 42K12x8-22
- 42K12x10-22
- 42K14x12-22
- 42K16x14-22























