pressure gauge

[Adrian HemmingsParticipant @adrianhemmings]

could any one help me out , i have just bought a 0-80 psi 1 inch dia pressure gauge with 2.36mm dia nipple end with 1.62 mm dia bore , how do you attach 1/8 inch dia copper pipe to this

[Adrian HemmingsParticipant @adrianhemmings]

[John RuddParticipant @johnrudd16576]

You need a gauge adapter….got a foto of the gauge connection?

Edited By John Rudd on 23/09/2022 15:40:53

[JasonBModerator @jasonb]

Sounds like you may have one to suit 3/32" (2.34mm) pipe, you would be best changing it or else make a custom nipple and nut to suit or reduce the pipe from 1/8 to 3/32 before the gauge.

[Howard LewisParticipant @howardlewis46836]

In Britain, a lot of threaded pipe fittings used on models will be to Imperial standards, not metric. Otherwise, you are going to find yourself searching for fittings with most peculiar Metric pitches and 55 degree, rather than 60 degree thread forms.

You may not be able to source 3.175mm pipe, but there will be lots of 1/8".available.

BSP threads will always be larger than the pipe size.(1/8 BSP is 28 tpi, but the OD is 0.383" )

Imperial threads will usually be defined as tpi, rather than pitch.

If you look at Zeus Charts, this should, become clear.

HTH

Howard

[JasonBModerator @jasonb]

Does the thread really come into it, OP has said it has a nipple which is simply the wrong size. Picture of some nipples for those that have had a sheltered life. These are sized to suit the OD of the tube

 

Edited By JasonB on 23/09/2022 18:16:56

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