pipe fittings? an, ntp

[morepoop4u]

what does it mean? also what size is the autometer fp gauge fitting. is it a 4an.

[morepoop4u]

thanx for the reply [img]biggrin.gif[/img]

[lcopas]

The AN (Army-Navy) standard was
established many years ago by the US
military to set a common measurement
for hose and fittings. It designates
the outside diameter (O.D.) of
the ridged metal tube that is compatible
with each size of fitting.

NPT -Stands for "National Pipe Tapered", or to some "National Pipe Thread". It is an American Standard Taper Pipe Thread.

Sorry, I don't know the size of fitting on your gauge. [img]redface.gif[/img]

<font color="#a62a2a" size="1">[ August 04, 2002 03:13 PM: Message edited by: lcopas ]</font>

[JRCivic]

Autometer uses a 1/8" NPT fitting on their sending units.

[The Mick]

Go here:
http://www.anplumbing.com/thread.html
A quick way to remember the AN thing is the AN # is the metal tube O.D.s number of 16ths. 4 in your example would be 4/16 or 1/4. This can be misleading though, so read the link above to clarify things.
Here's a link to the NPT stuff:
http://www.anplumbing.com/thread_npt.html
Chances are, your gauge has a 1/8-27 NPT thread.
Take care,

<font color="#a62a2a" size="1">[ August 06, 2002 01:01 AM: Message edited by: The Mick ]</font>

<font color="#a62a2a" size="1">[ August 06, 2002 01:04 AM: Message edited by: The Mick ]</font>