Quote:
Originally Posted by jmartin
Also according to R77 (e), any tubing used has to have an ID of 0.16". So I don't think using 1/4" NPT would be any more useful since you're still limited by the tubing.
Are you sure it isn't ports with 1/4" OD that you're thinking of? Because the 1/8" NPT ports we have fit 1/4" OD tubing. The 1/8" NPT ports have an ID of 1/8". It can be a bit confusing that the 1/8" NPT ports have labels on them saying 1/4.
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That's just it. Elbows and nipples are *not* tubing, so I am thinking that rule doesn't apply. We are planning to use 1/4" (nominal ID) pipe nipple to go into a 1/4" NPT port.