Who makes Steam pressure gauges reading up to 20 or 30 PSI ?

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Who makes Steam pressure gauges reading up to 20 or 30 PSI ?

This topic has 10 replies, 6 voices, and was last updated 1 September 2014 at 19:36 by Neil Wyatt.

Viewing 11 posts - 1 through 11 (of 11 total)

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14 August 2014 at 10:54 #160667
Brian John
Participant
@brianjohn93961
I would like to purchase a steam pressure gauge that can read up to about 20 or 30 PSI. Most pressure gauges I have seen go up to about 100 or even 160 PSI. This is not much good if your boiler is only producing somewhere between 5 and 10 PSI.
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14 August 2014 at 10:54 #3219
Brian John
Participant
@brianjohn93961
I do not want it to read up to 160 PSI !
14 August 2014 at 11:24 #160670
Ady1
Participant
@ady1
I'm not a steamie person but at such low pressure would a gauge not be irrelevant?

Only a simple safety valve would be relevant
14 August 2014 at 11:49 #160672
Thor 🇳🇴
Participant
@thor
Hi Brian,

I believe you can get Mamod 50 PSI steam gauges, a bit higher than you wanted though.

It seems Reeves have 30 PSI steam gauges.

Thor

Edited By Thor on 14/08/2014 12:06:42
14 August 2014 at 14:54 #160689
Brian John
Participant
@brianjohn93961
The Reeves 30 PSI gauge looks good.

Yes, I know it is not necessary but I want one anyway.
14 August 2014 at 15:47 #160696
Swarf, Mostly!
Participant
@swarfmostly
Hi there, Brian,

Do you want the gauge to actually fit to the boiler, i.e. 'model-size', or to use as an item of test gear?

If the latter, a 'full-size' gauge would do.

Best regards,

Swarf, Mostly!
14 August 2014 at 15:53 #160698
Neil Wyatt
Moderator
@neilwyatt
There's one kind of pressure gauge used on small C)2 and dry powder fire extinguishers that has a spring metal plate inside to extend its reading range. Remove it and it gives a 3/4" diameter guage with about 30 psi FSD.

Neil
14 August 2014 at 17:51 #160714
Brian John
Participant
@brianjohn93961
I would like to fit the steam gauge to the boiler once I have built it. I want to have some idea of what pressure is being generated rather than just guessing.
14 August 2014 at 19:51 #160725
Steve Withnell
Participant
@stevewithnell34426
I've got a Stuart steam pressure gauge on my boiler (which has yet to be steamed) but didn't think they were for using for measurement, but rather relying on the safety valve for correct pressure. How accurate are these gauges – +/- 20% of full scale?

Steve
31 August 2014 at 06:42 #162245
Brian John
Participant
@brianjohn93961
I have located a couple of 0-30 steam pressure gauges second hand but I am not sure what fitting is on them yet. How would I test them for safety and accuracy ?

Edited By Brian John on 31/08/2014 06:43:12
1 September 2014 at 19:36 #162383
Neil Wyatt
Moderator
@neilwyatt
Normal practice for steam locos is to test them against a known accurate master gauge, and mark a red line at the safe working pressure – the accuracy at any other pressure isn't critical.

Neil
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