Wilden, part of PSG, a Dover company and a world leader in air-operated double-diaphragm (AODD) pump technology, has released of aluminium versions of its 420/430 Advanced™ FIT AODD pumps. Featuring bolted product containment, easier maintenance and more efficient operations, Wilden 420/430 Advanced FIT pumps have been specifically designed to be direct replacements for existing 38 mm pump installations. The release of the aluminum 420/430 Advanced FIT pumps now completes the Advanced FIT pump line, which is available in 38 mm through 76 mm sizes with either aluminium or stainless steel wetted path options.Providing increased performance with no repiping necessary, Advanced FIT pumps precisely “FIT” bolt-to-bolt and pipe-to-pipe in existing fluid-handling piping systems that use competitor pumps or Wilden Original™ and Advanced pump models. Wilden says its “Advanced FIT pumps feature superior flow rates and easier installation compared to other brands. They have been engineered to be an easy, cost-effective way to enhance and upgrade existing pump performance with superior bolted product containment.The pumps are available with the patent-pending Pro-Flo® SHIFT Air Distribution System (ADS) for outstanding energy efficiency and maximum Mean Time Between Repair (MTBR) or the Pro-Flo X™ ADS offering high operational flexibility. A wide range of Wilden diaphragms are available for a greater diversity in fluid compatibility including exceptional performance for abrasive applications. The 420 Advanced FIT pumps are supplied with NPT or BSPT threaded connections, and the 430 Advanced FIT pumps are available with ANSI or DIN flanged pipe connections.