6-Appendix Three- Technical Specifications.pdf

This document is a technical specifications appendix for an Invitation to Bid (ITB #721-26050) issued by the University of Texas at Austin's Cockrell School of Engineering for sealless magnetic drive process pumps. The specification details a single pump unit designed for distillation, absorber, and storage tank applications handling various acids. The pump is rated for 100 gallons per minute capacity at 3,510 RPM with a 200-foot head and 12.5 horsepower rated power (16.0 horsepower run-out). The pump is rated for a maximum temperature of 300 degrees Fahrenheit with a discharge pressure of 88.0 psig at rated conditions and 92.5 psig at shut-off. Minimum continuous stable flow is specified at 28.6 gallons per minute, and the pump must achieve a rated efficiency of 41 percent based on HI 14.6 1B performance standards. The performance curve reference is 5831-1 with clockwise rotation viewed from the coupling end.

The pump construction features 316 stainless steel close-coupled casing and impeller (ASTM 1.4408) with an enclosed impeller configuration ranging from a minimum of 6.3750 inches to a maximum of 8.3500 inches in diameter. The magnetic drive assembly utilizes neodymium-iron magnets with a rated power capacity of 22.8 horsepower at rated speed and temperature. Additional materials specifications include a duplex stainless steel bearing cartridge with silicon carbide bearings, Hastelloy C containment shell with deep-drawn one-piece construction, and a concrete polymer baseplate (Blue Zanite C06904A). The liquid end features 150-pound raised face flanges, aramid fiber and EPDM gaskets, and the motor adapter is constructed of ductile iron with cast iron C-face motor mounting. The pump impeller and magnet assembly must be balanced to ISO 1940 G6.3 standards, and the casing is rated for a maximum pressure of 212.2 psig at the rated temperature.