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  1. UTK_Civil

    Mending Plates for Stair Treads

    My facility has numerous cast metal treads from the 1950s. These treads are starting to fail some with large cracks and some with small cracks. I recently started having a 1/4" aluminum plate added to the treads with small cracks...say less than 2". I have the crack stop drilled and add the...
  2. UTK_Civil

    Butterfly Valves used for flow adjustment in raw water service experiencing valve seat damage

    Thanks everyone for the great information. I will try and update later on outcome!
  3. UTK_Civil

    Butterfly Valves used for flow adjustment in raw water service experiencing valve seat damage

    Thanks everyone for the information! BCD, Can you explain the need to have a smaller butterfly valve than line size? Most of our valves are the same size and upstream and downstream line size.
  4. UTK_Civil

    Butterfly Valves used for flow adjustment in raw water service experiencing valve seat damage

    I have a design build low bid contract in progress where the designers are trying to use butterfly valves to control (adjust) flow in the process. The services is untreated raw water used for cooling in a heat exchanger. Past experience with similar systems in at our facility has shown...

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