October 29, 20187 yr Popular Post Amongst the taps that were in the old FORD parts box....was a "set" of pipe thread taps....ranging from this 1/4" NPT For 1/4" pipe...then there was this.. 3/8" NPT....anyone ever run 3/8" pipe? But wait, there was more.. Everyone has seen 1/2" pipe, right? and , maybe this next one? 3/4" pipe? Imagine the tap wrench for that...but, wait..there was one more.. IF I read the markings correctly....this be an 1-1/2" pipe thread tap.... About the only use I'd have for these..is to "chase" bad threads on pipe clamps....otherwise, these need a home with someone who will use them... Still sorting through the "normal" taps....from 7/8" ( coarse and fine threads) on down.....maybe I could build a box to hold them and the rest of the tap & die tools? Didn't find any dies to match these Pipe thread taps....
October 29, 20187 yr 6 hours ago, steven newman said: 3/8" NPT....anyone ever run 3/8" pipe? In the olden days during a previous life, 3/8" NPT was fairly common on lots of the old combines and other farm machinery. Anything from drain/fill plugs, hydraulic lines and fittings, gear box grease fill ports etc. Many of the old cars and trucks used them for similar applications. The Ported, O-ring fittings came along along with formed steel line to accommodate the higher system pressures.
October 29, 20187 yr IIRC, the propane pipe from the tank to the shop heaters is 3/8. Edited October 29, 20187 yr by Gene Howe
October 31, 20187 yr Having been a Journeyman Pipefitter I've used these clean up to 4" size. The tee handle for these big sizes is about 4' long, and quite heavy.
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