On 29 May 2024 at 18:56:33 BST, "[email protected]" <[email protected]> wrote:

In article <v2qo44$2f14t$[email protected]>, ehsjr <[email protected]> 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

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

In article <v2qo44$2f14t$[email protected]>, ehsjr <[email protected]> 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.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

In article <v37q8h$18b4k$[email protected]>, [email protected] says...

In article <v2qo44$2f14t$[email protected]>, ehsjr <[email protected]> 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.

Same way that some connectors are left or right hand threads.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)