| | | Eliminate seal troubles with liquids that crystallize or set up: • Isocyanates • Sodium Hydroxide Fact: Shaft seal leakage is the number one cause of pump downtime and maintenance. Shaft seals wear faster when liquid, air and heat combine at the seal to cause chemical reactions, like: • Crystallization (e.g. isocyanates, sugar). Abrasive crystals cause premature wear. • Sticking (e.g. adhesives, epoxy resins, industrial paints). Seal faces bond when pump stops, and fails at startup. • Varnishing (e.g. petroleum products). Layer builds up on seal faces causing separation. | | Where fluids should not leak out, and where air should not leak in: • Volatile Organic Chemicals • Hazardous Chemicals • LPG and Ammonia • Reactive Chemicals Fact: Shaft seals can allow liquids and vapors out, causing hazardous exposure, and can allow air in, causing unwanted chemical reactions. Environmental controls on traditional sealed pumps, including flushing, quenching and barrier fluids, are subject to the same failures as standard seals, plus failures of their associated equipment (pumps, piping, industrial filters and heat exchangers). When the costs of environmental controls are considered, the Viking Mag Drive 855 Series is the most cost-effective alternative. | | Where no downtime for seal maintenance is allowed: • Refineries • Chemical and Polymer Plants • Paper Mills • Pipelines Fact: Unplanned downtime to fix a leaky seal is unacceptable in facilities with continuous processes, like refineries, chemical plants and paper mills. Even when pumping "safe" liquids, seals are subject to mechanical problems like loss of compression, misalignment of pump and driver, improper seal installation, shaft deflection causing off-center faces, suction lift (vacuum) causing face separation, and many others. If you can't afford pump downtime, the Viking Mag Drive 855 Series offers exceptional up-time reliability through its robust, sealless design. | |