Path: ...!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Roger Hayter Newsgroups: sci.electronics.repair Subject: Re: Re (2): Schrader connectors for medical air and nitrogen. Date: 29 May 2024 18:11:57 GMT Organization: Metazoon Lines: 21 Message-ID: <0631684948.b3e50d1b@uninhabited.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=fixed Content-Transfer-Encoding: 8bit X-Trace: individual.net V7rcC8DT9OhCUIZ0QhUr4Au1u92iQLGpWLceo0nJXQp3Ct6dpH Cancel-Lock: sha1:ECMjcu5mHKd2TCbqUEUW5FYJ0YQ= sha256:985CahF7e39O9hgySJocoqwgKcJxj6xOGN0y0fuIfIc= User-Agent: Usenapp for MacOS X-Usenapp: v1.27.2/l - Full License Bytes: 1526 On 29 May 2024 at 18:56:33 BST, "peter@easthope.ca" wrote: > In article , ehsjr > wrote: >> The only difference I can see is the SH-12 is for nitrogen, the >> SH-16 is for air. > > Understood. One is marked "Air" and the other "N2". > > A few microns or thousands of an inch can block interchangeability. > Obvious when fitting parts; not in photographs. Fitting a UNC nut to a > UNF screw is a more extreme example. > > Thx, ... P. One reason for labelling them and keeping them separate is that the oxygen one has to be kept free of inflammable lubricants etc. -- Roger Hayter