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  1. wsuengineer

    WATER SEAL INSTEAD OF STEAM TRAP

    I would like to use a water seal instead of a steam trap. I will design the water seal "p trap" at the highest pressure I expect. This pressure will be 1.75 PSIG or 49 inches w.c. I included a 1 PSIG or 28 inch additional water column above the water seal to aid in back pressure issues...
  2. wsuengineer

    HEATER FOR WINDTUNNEL

    Problem: How to heat air from 30ºF to 275ºF in a wind tunnel. Initially the air must be heated then maintained. Heater coil/medium cannot be in windtunnel (test particles would collect on them). Thus air must be first heated then introduced into the wind tunnel. Specifications: Volume Air in...
  3. wsuengineer

    SELECTING SEAT MATERIAL FOR BUTTERFLY VALVE

    I AM IN SEARCH OF A COMPATIBILITY CHART FOR PROPYLENE GLYCOL (DOWFROST HD) WHEN SELECTING SEAT MATERIALS FOR BUTTERFLY VALVES. SPECIFICALLY: EPDM, NBR, PTFE, SINCE THESE ARE THE MOST COMMON AND LEAST EXPENSIVE. THANKS.

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