MechChem Africa December 2018

⎪ Pump systems, pipes, valves and seals ⎪

New levels of hydraulic efficiency in slurry applications

The Krebs slurryMAX™ range of slurry pumps from global minerals process specialist FLSmidth has brought new levels of hydraulic efficiency to Africa’s slurry operations.

Above: The Krebs slurryMAX-HD thickener underflow pump has extremely thick elastomer liners and a heavy-duty impeller, giving this pump extended wear life. Right: The Krebs slurryMAX XHP extra high-pressure pump has been added to the range to allow customers to design pumping systems with more stages and a higher final discharge pressure.

O ffered with a host of material options for liners and impellers, the Krebs slurryMAX range of pumps handles most plant applications across various industries. Its design is based on the success of FLSmidth’s millMax™ range of pumps, whose wear ring technology has created an efficient and long lasting slurry pump. The slurryMAX features an improved, more efficient, impeller and anoptional water drain plug for easier maintenance, allowing water that might have settled at the bottom of the pump to be quickly drained. In the slurryMAX 8×6 pump and larger units, a simple removable suction liner assem- bly allows for easy inspections of the internal components, aswell as the replacement of the impellerwithout removing thedischargepipe. In addition, the volute liner has an integrated back liner that bolts securely to the outer drive side casing. This makes for hands-free assembly, improving the safety aspects of the pump. Maintenance crews will also appreci- ate the easy-to-use lifting jig, for faster and safer rebuilds. Other models in the slurryMAX range include the XD version for aggressive appli- cations, which boasts thick elastomer liners and a heavy-duty impeller for extendedwear life. The slurryMAX HP is the high-pressure version of this model, and is designed for multistage high pressure pumping systems. Featuring a high-pressure outer casing, the slurryMAX HP uses all the same wear-

resistant parts as the XD, giving consistent performance and long life. Also in the range is the slurryMAX XHP, which enables customers to design pumping systems with more stages and a higher final discharge pressure. The XHP uses the same wear parts as its HD and XD counterparts, but with an even more robust outer casing

than the HP version. Predictable and even wear life across all wet-end parts is among the benefits of the slurryMAX pump, as are its heavy-duty shaft and taper roller bearings that cannot be over greased, enabling the long-lasting bearings to be rated for a minimum of 100 000 hours. q

Cast off with Victoria butterfly valves Valve manufacturer GEMÜ has obtained anotherapprovalforitsGEMÜ480Victoria butterfly valves. In addition to being ap- proved for drinking water and gas, this se- ries will, from now on, also have a shipping approval inaccordancewithDNV-GL.With this certification, it is possible to use the GEMÜ valves for the isolation and control of non-flammable gases, seawater, water, air andoil in ships that require classification andbuilding regulations inaccordancewith DNV-GL, guaranteeing compliance with applicable regulatory codes and standards for maritime applications and adhering to the highest quality guidelines. valves in the GEMÜ 480 Victoria se- ries into reliable components for demanding appli- cations. Thanks to the epoxy coating of at least 250μm– inaccordance with the corrosiveness category C5-M as per DIN EN ISO 12944 – they are resistant to seawater and can withstand highly cor- rosive loads caused by condensation and contamination.

Systemsthatareusedinshippingarenot only subjected to extreme climatic condi- tions and a harsh environment, but they must alsowork faultlessly under extremely highmechanical loads. High corrosion pro- tection and the triple seal contour of the shaft seal have already made the butterfly

Depending on the product type, DNV-GL- approved GEMÜ 480 Victoria butterfly valves are available withmanual, pneumatic or motorised actuators. q

December 2018 • MechChem Africa ¦ 11