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Maintenance of York Chemical’s PVC multi-stage centrifuges models M326B6, M338A8, and M526B8: These multi-stage centrifuges consist of a front bearing housing, inter-stage seals, a front cover, impellers, air guide vanes, seals for the air guide vanes, a rear bearing housing, a volute, and an intermediate casing. The front bearing housing fixes the front cover to the bearings; behind the front cover lies the impeller. Inter-stage seals are installed between the impellers. The air guide vanes are located between the intermediate casing and the impellers, with seals for these vanes also being installed there. The rear bearing housing is fixed at the rear end of the bearings, while the volute is situated at the right end of the intermediate casing. The intermediate casing encloses the impellers, air guide vanes, seals for those vanes, and inter-stage seals within itself. This utility model features a simple structure and excellent performance. Each compressor is optimized to meet the customer’s application conditions and load requirements. Engineers at York use advanced mathematical models to optimize the selection of impellers and the overall performance of compressors. And selections are made from a large number of different combinations of standard volutes and impellers to achieve the desired optimal performance. Thanks to their rich combination capabilities and flexibility, York centrifugal compressors can be adapted to a wide range of capacities and applications. Kuai Anjia Industry is able to provide services such as the sales, installation, and commissioning of equipment including single and double-stage screw compressors, piston compressors, single or multi-stage centrifugal compressors, heat exchangers, pressure vessels, as well as factory-mounted refrigeration systems and automatic control systems. It also offers compressor overhauls and control system upgrades. Its product range includes various types of refrigeration units for applications such as brine, ethylene glycol, chlorine liquefaction, propane, propylene, carbon dioxide, ammonia, and cascade cryogenic systems, enabling it to meet the production requirements of industries such as salt chemicals, coal chemicals, oil and gas, fluorine chemicals, polysilicon, pharmaceuticals, acetic acid, food and beverage, among others.