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Unread 09/24/2018, 04:32 AM   #3
der_wille_zur_macht
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Join Date: Sep 2003
Location: NY
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What style of standpipe is on the frag tank 1 inch drain? You can't combine unlike styles - for instance, the "trickle" (really an emergency backup) from your DT herbie cannot be combined with a full siphon.

You really need to think about capacity, too. The emergency from the DT needs to be able to handle full flow if the DT main siphon is blocked. If you're t'ing it into another drain, you're probably losing that capacity.


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