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Replacing lift fittings - what impact on vacuum pump?

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SteveZ
SteveZ Member Posts: 1
in Strictly Steam
I'm working with a 13 story building with 4 long horizontal gravity return lines at first floor ceiling level. Each line has a lift fitting about mid-way back to the plant. In "The Lost Art" it is recommended to replace the lift fittings with transfer pumps, which makes sense. But I wonder if doing so doesn't divorce the downstream return risers from the vacuum source, losing the associated benefits of air removal and better distribution of steam throughout the system.

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  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,545
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    The discussion in the lost art is about ways to eliminate lift fittings....not that they don't work but it works the vacuum pump hard and uses a lot of electricity. How you pipe it using lift fittings, accumulator tanks or transfer pumps is a little complicated so you have to refer to TLA. And will differ from job to job depending on the job specific piping.

    I believe you connect the condensate pump discharge and the condensate vent fro your new tanks into the existing return line which is pulled into a vacuum by the vac pump
    SteveZ

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