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  1. Dolemite

    Lyophilizer 480/3/60 25A 4 Wire

    Many thanks for all the great input!
  2. Dolemite

    Lyophilizer 480/3/60 25A 4 Wire

    Btrueblood, Great point. Yes, it will have UL certification. Thank you
  3. Dolemite

    Lyophilizer 480/3/60 25A 4 Wire

    Gents, We just purchased a lyophilzer (freeze dryer) that operates on 480/3/60 4 wire. Twelve weeks until it arrives on site. It is a machine with a cascade refrigeration system (2 refrigeration systems with individual compressors). The refrigeration compressors are 3 phase. It has an...
  4. Dolemite

    Copper Tube on Pipe Rack

    The company has pipe specs for the various utilities. The pipe spec for N2G is copper until it gets to the filter (say before process equipment)and then stainless. Pharmaceutical.
  5. Dolemite

    Copper Tube on Pipe Rack

    The cost of using SS tubing would be much cheaper than the cost of adding structural steel to the 7 existing supports! I'm surprised that the same diameter SS tubing can make the 20' span! Thank you for the great idea!
  6. Dolemite

    Copper Tube on Pipe Rack

    Many thanks to all. At 20' spans between supports, I am so far off from the recommended 10', that I will look to put some support steel, spanning between the existing supports. This won't be cheap. I can rout the pipe another way (thru an existing building) and minimize the run on the rack...
  7. Dolemite

    Copper Tube on Pipe Rack

    Good Morning, Looking to run an 1-1/2" copper line for N2 gas. Have an existing piperack that has W8 beams on 20' centers. Just wondering if the tube will sag at this span. I can find span table for copper tube filled with water but no 'gas' span tables. Thank you in advance for your...
  8. Dolemite

    Pressure buildup in solvent pipe

    I have a 2" solvent pipeline from an outdoor holding tank. The pipe travels on an outdoor pipe rack and eventually makes it way to a building and supplies a batch process. There is a significant elevation change (up) from pump to use point. When solvent is not required for the process, it...
  9. Dolemite

    RCRA Containment

    I have a RCRA containment dyke that is covered with open side. It gets rainwater accumulating to a sump. The float system on the pump (manually turned on) is set so that the pump is turned off with some inches of accumulation remaining. My safety Person is telling me that by code, the sump...

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