I just checked my Machinery's Handbook, and the only real difference between NPT & BSP is that BSP is based on the Whitworth thread form (55°).
The taper on the thread is the same (1:16). DS > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf Of > Larry Colen > Sent: Tuesday, 14 July 2009 3:27 PM > To: Pentax-Discuss Mail List > Subject: Re: metric equivalent of 1/4 NPT > > On Tue, Jul 14, 2009 at 01:49:49PM +0800, David Savage wrote: > > I'm not sure there are metric pipe fittings... > > > > It may be a BSP fitting. > > > > Same size, but the thread is cut @ 55°, instead of 60°. > > Interesting. That could be it. I expect that the threads could be cut > to a slightly different depth, or taper ? > > > > > DS > > > > > -----Original Message----- > > > From: [email protected] [mailto:[email protected]] On Behalf Of > > > Larry Colen > > > Sent: Tuesday, 14 July 2009 1:49 PM > > > To: Pentax-Discuss Mail List > > > Subject: OT: metric equivalent of 1/4 NPT > > > > > > I bought a cheap compressor at Kragens (auto part store), it got > > > knocked over and the ball valve that was between the reservoir and the > > > hose fittings broke. When I bought the standard 1/4" NPT replacement, > > > it didn't fit. > > > > > > My guess is that since it is a cheap, probably Chinese, compressor, it > > > is some metric equivalent to 1/4" NPT. However I cannot find anything > > > like that around here. Does anyone have a source of an adapter from > > > whatever this thread is to 1/4" NPT? -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
