Wright Pump

Jan. 17, 2006
Centrifugal Pumps Feature Purity-Protecting Flushing System
Click here for larger image.Wright Pump has introduced a new family of high-purity centrifugal pumps, the TRA400 series, available in five models in both volute and non-volute styles. Each pump is machined from 316L stainless steel or other high-quality alloy bar and plates eliminating the problems associated with traditional castings, such as cracks, pits, shrink, and high ferrite content that may cause rouging in pure water systems.Additionally, the innovative Softsterile flushing system (patent pending) for double-seal flushing eliminates the difficult-to-inspect external piping common to all other high-purity centrifugal pumps. The Softsterile system marks a significant technological advance in the art of high-purity pump design because it eliminates the need for multiple connections, gaskets, elbows, bent tubes, and compression fittings that can be sources of contamination, misalignment and gasket extrusion, and thus compromise process purity and reliability.The TRA400 series also eliminates the “dead leg” found in other centrifugal pumps due to its unique diaphragm valve body machined directly into its casing. This permits a flush face fit with the pumps’ interior contour, allowing the diaphragm to be swept continuously with product during operation to achieve true Zero Dead-Leg casing drain. The patent-pending Zero Dead-Leg drains are a half-inch in diameter; larger sizes are available upon request.In addition, all models include stainless steel flange adapters, and are shipped with comprehensive material certification and testing documentation to support Installation Qualification. The TRA400 series provides flow capacities up to 320 GPM (72 m3/hr) with pressures as great as 190 psi (13.1 bar) at viscosities to 2700 SSU (600cPs) with temperatures to 380° F (195° C).