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  1. BlueSandman

    Direct drive or Belt drive fans?

    I used to build automotive paint shops, so "clean" has a very high bar for me as any dirt in the paint can force a production re-run. I always used belt driven, housed fans (ducted inlet and outet). That design keeps the belts and all the fan nooks and crannies (future dirt pockets) completely...
  2. BlueSandman

    B31.3 Minimum NPT Joint Selection

    Does table 314.2.1 apply to my situation below? I changed companies (same work, new face), and this table just came to light. The company builds low pressure, low volume natural gas equipment (<2" NPT, under 5 PSIG) for use in industrial factories. Per table above it seems we need to use...
  3. BlueSandman

    Plenum Fan

    Tough spot to be in. Clearly any ideas for optimal arrangments have been considered and weighed against the cost/time/space/rework limitations you have. Ideally the cold coil would have been after the heater, but you have to play the cards you are dealt. Given the mosture I suspect all that I...
  4. BlueSandman

    Plenum Fan

    Have you considered the effects of the A-coil in this arrangment on your electrical components? I don't know your climatic design conditions, but if you operate close to dew-point off that coil or toss droplets (condensation drain plugs, refrigerant runs low, etc.) then the motor as well as any...

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