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Recent content by atlantis103

  1. atlantis103

    Plumbing Design

    Current customer in the process of retrofitting constant pressure system with VFD. Current system has two Aurora 421 pumps that operate independently of each other 24 hours a day. Plumbing in the 20 story building steps down in size starting with a 6 inch main. The Riser (off the main) begins at...

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