Talk:National pipe thread

message: Would anyone be willing to start a main article for National Pipe Thread Tapered Fine (NPTF), ANSI B1.20.3?  There are some oddly cobbled redirects to this article from NPTF and article names starting with NPTF. The chart in this article only covers NPT. Stephen Charles Thompson (talk) 17:57, 30 December 2008 (UTC)
thread_title:  Split Article 

message: Would someone be willing to verify this article information against the ANSI B1.20.1 document and then add this document as a reference? Stephen Charles Thompson (talk) 17:57, 30 December 2008 (UTC)
thread_title:  Reference Needed 

message: What is the subject of this article?  Is it "National Pipe Thread" or is it "National Pipe Thread Tapered"?  The bold text of the article summary does not match the article title.  Also, the article title does not appear to be properly capitalized.  If the subject is a proper noun then the first letter of each word in the article name should also be capitalized. If you need assistance please contact me. Stephen Charles Thompson (talk) 06:40, 29 December 2008 (UTC)
thread_title:  Article Name 

message: How should NPT threads be tightened?  I've heard 2.5 turns beyond hand tight for small fittings, 1.5-2 for larger ones, but I don't have a reference for that.  Does anyone have a good source on how to install NPT fittings?
Evand 19:21, 8 February 2006 (UTC)
thread_title: Tightening

message: It is my understanding that NPT threads should not be assembled / disassembled repeatedly, since the deformation of the threads causes them to wear out over time.  I don't have a reference handy for that.  Is this correct?  Does anyone have a reference either way? Evand 02:29, 2 August 2006 (UTC)
replies: text: It depends Evand. NPT seals on the thread flanks without the need to deform. If the thread lube prevents spalling they can be reused many times. NPTF crush on the flats, different situation. By all means add some info on reusability when there is a reference for it. Meggar 07:10, 2 August 2006 (UTC)
thread_title:  Repeated use 

message: It looks like MPT and FPT stand for Male Pipe Thread and Female Pipe Thread, not Male Pipe Taper and Female Pipe Taper.  Googling on "Male Pipe Taper" (in quotes) turned up one hit - this article!  Googling on "Male Pipe Thread" turned up numerous plumbing sites, including www.septicmaintenanceonline.com/page/8466, which the paragraph in question was plagiarized from.
--Javance 18:29, 2 August 2007 (UTC)
thread_title:  MPT and FPT 

message: Is there a metric equivalent? Roger 21:19, 30 October 2007 (UTC)
thread_title:  Metric Equivalent? 

message: Does the outer diameter in the table refer to the base of the threaded portion, not the tapered end?  If so, that should be stated after the table title.  If you measure the diameter by placing a ruler against the end of the pipe, you are going to get a smaller value.
Steve Wise (talk) 17:46, 3 May 2009 (UTC)
thread_title:  Pipe thread sizes table 

message: This important issue is not mentioned and needs inclusion - I have had some difficulty finding someone who knows!   My local contacts (Wrexham, N. Wales) advise that up to and inc. 1", NPT and BSP are compatible, but above are not.  This needs verifying.  Clwydd (talk) 09:40, 22 July 2009 (UTC)
thread_title:  NPT & BSP compatibility 

message: 'NPT' is "National Pipe Taper"
'NPS' is "National Pipe Straight" (a similar thread, without the taper)
Place to consult include: The _SME_Tool_Engineers_Handbook_, ISBN 07-001524-4; _Machinery's_Handbook_, Library of Congress Catalog Card Number: 72-62276.
  I concur... too bad you didn't sign your post with 4 tildes like it says below the Editing Talk box. Darr247 (talk) 17:46, 8 October 2013 (UTC)
thread_title:  NPT vs NPS 

message: "The use of tape also helps to limit corrosion on the threads, which otherwise can make future disassembly nearly impossible.[citation needed]"
Is the suggestion that the Teflon (or other plastic) tape preventing corrosion on the fittings can't be taken as obvious, or that a rusted screw in a rusted socket being nearly impossible to remove can't be taken as obvious.  I would challenge whoever asked for a citation to provide a counter-example for either case.  — Preceding unsigned comment added by 128.59.145.222 (talk) 14:59, 4 April 2013 (UTC)
thread_title:  Citation needed? 

message: The six symbols appearing in the figure to represent dimensions appear nowhere else in the article.  I think they should also appear, e.g., in those headings of the table where they correspond, not replacing, but augmenting the present headings.  
I also wonder if there is enough information in the table, together with the comments in subsection Thread Form, to reconstruct all of the dimensions appearing in the figure in this subsection of the article "Screw thread".  Is that a worthy goal? (I'm not suggesting that all of the latter dimensions need appear explicitly here.)  Layzeeboi (talk) 01:44, 12 June 2018 (UTC)
thread_title:  Symbols in figure appear nowhere else