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Compressor inspection

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SillyOldDuffer10/06/2020 09:16:28
6328 forum posts
1388 photos
Posted by Paul Lousick on 09/06/2020 10:25:25:

Drain probably 10° from the bottom because it is easier and cheaper to do it this way.


More likely it's to stop wet muck settling in the outlet pipe and valve. If there's enough pressure in the tank when it's blown down, any water just below the valve should be pushed out provided the outlet is clear. I always think of Goldfinger leaving the aircraft...


duncan webster10/06/2020 17:10:23
2795 forum posts
41 photos

A long way down the to-do list is to fit a solenoid valve to the drain so that when you unplug the compressor it depressurises the tank and blows out any water. As I said it's a long way down the list!

Brian Morehen10/06/2020 18:56:27
124 forum posts
11 photos

I came across this a few years ago when working on steam boilers and chemical distillation units which did require a yeary test certificate as do air compressors over 25 ltr capacity, Inspectors answer was a air tank of this size will leak and if the safety valve blows before you can do anything the air has gone . A boiler is much the same but somone could get burnt or scolded with steam , a Steam operated still is much the same if they blow inside the jacket the risk is mixed with the chemical being stilled.if the outer skin goes someone may get scalded. This is why compressors are only tested above 25 Ltr. This may have changed in the last 10 yrs .Did appear in a court case where i stated that the compressors did not have a test certicate, Answer dismiss this compressor and its value.

Hope this answers your question on compressors...

Regards Brian


jimmy b10/06/2020 19:09:48
675 forum posts
40 photos

I had the same thoughts a few years ago about my 16 year old cheapie.

As has been said, it'll just leak when its knackered.

If you are worried, just replace it.


old mart10/06/2020 19:12:50
1991 forum posts
151 photos

I may be wrong, but I have a feeling that the museums compressor might get inspected at 6 monthly intervals. The reciever could be 150L.

Robert Atkinson 210/06/2020 19:51:28
770 forum posts
17 photos

The 250 Bar/liter limit is not to do with how long it takes to empty, it's an energy limit. Less energy means less damage if it fails. Steam has no lower limit becaue of the additional heat energy and the possibility of superheated water being present which releases even more energy as it boils when the pressure is released. Google BLEVE (boling liquid expanding vapour explosion)

Robert G8RPI.

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