Straight pipe thread
Straight pipe thread
(OP)
I found some old drawings that call out a straight pipe thread where a pipe plug goes into the end of an oil gallery. The pipe plug is a standard part. In 30 years of calling out NPT or NPTF threads, I have never seen this kind of thing. There is a brief mention of them in Machinery's Handbook, but not much about what they are used for. Why would anyone want to use a straight pipe thread, especially when liquid under pressure has to be sealed?





RE: Straight pipe thread
"These joints are recommended for comparatively low pressures only."
RE: Straight pipe thread
"IF" you used tapered threads you won't be able to adjust the height of this support because it would tighten as you decreased the length. Clear as mud? *G*
FYI ...British Standard Parallel threads are the same, the sealing is done at the end of the pipe as apposed to the sides as with the tapered thread.
RE: Straight pipe thread
RE: Straight pipe thread
RE: Straight pipe thread