Fitting a pressure gauge

Fitting a pressure gauge

This topic has 9 replies, 5 voices, and was last updated 20 August 2015 at 20:33 by nigel jones 5.

Viewing 10 posts - 1 through 10 (of 10 total)

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20 August 2015 at 11:34 #201102
Howard Lyne
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@howardlyne10956
I want to replace the pressure gauge on a boiler but am puzzling over how to fit the olive which is meant to be sleeved inside the syphon pipe. Its OD seems to be 3/32" which is too large for sleeving inside 1/8" pipe and a sloppy fit in 5/32" pipe. Do I enlarge the 1/8" pipe somehow or just fill up the gap with solder on the 5/32" pipe. Also any tips on avoiding soldering the nut would also be welcome.
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20 August 2015 at 11:34 #7762
Howard Lyne
Participant
@howardlyne10956
20 August 2015 at 12:04 #201109
JasonB
Moderator
@jasonb
Can you post a picture, most model engine pipework uses a ferrule or nipple that is soldered to the pipe.

J
20 August 2015 at 13:22 #201121
Howard Lyne
Participant
@howardlyne10956
Jason

The gauge (1 inch diam) is pictured in most ME catalogues, e.g. Polly Engineering and Blackgates. The olive/ferrule/nipple clearly needs to be sleeved inside the copper pipe before soldering rather than over it.
20 August 2015 at 13:34 #201122
JasonB
Moderator
@jasonb
Howard a 1" gauge is usually plumbed in with 1/16" pipe which will fit INSIDE the brass nipple supplied

Some thing like this one from Macc Models

Here is one of mine, OK its sitting on a 1/16" drill bit but thats how they fit to copper pipe, if you want to run a larger pipe then you will have to make an adaptor

Edited By JasonB on 20/08/2015 13:45:23
20 August 2015 at 13:44 #201123
Howard Lyne
Participant
@howardlyne10956
Thanks Jason, no wonder I'm struggling. I probably read the term "sleeve" somewhere and misinterpreted it. I was also probably mislead by the pipework (1/8&quot on the old gauge I'm replacing. Now to order some 1/16" pipe!
20 August 2015 at 13:45 #201125
Howard Lyne
Participant
@howardlyne10956
Sorry about the emoticon in the previous post – how did I do that?
20 August 2015 at 16:56 #201135
mechman48
Participant
@mechman48
Howard

I find that if you double space at the end before you put the last parenthesis ( bracket ) in usually works

George.
20 August 2015 at 17:32 #201139
Neil Wyatt
Moderator
@neilwyatt
It's " next to ) that causes the problem.

Neil
20 August 2015 at 20:33 #201160
nigel jones 5
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@nigeljones5
I liked it !
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