pneumatic compressor gas tightness question.

What about if you have multiple compressors that are individually under the limit?

wrapping and breaking the neck with an axe is quite safe.

In that case as long as they are not linked to form a bigger system then I think they are all not not subject to mandatory testing.

If these are owned by an employer it may be a case of checking with the insurer, and also considering carrying out and recording a systematic in-house check to look for any obvious faults.

Usual disclaimer IANAL.

CRTs can be energetic.

You just have to know how to tease them, to max the output.

One of our fine grad students in the chem department, decided the picture tube in his colour TV was "gassy". That was the story that was told to me. He brings the tube into work, sets it up on a bench at one end of the lab.

He heats the neck of the tube with a torch. Presumably this heating was done where there was a sealing nipple or something. Well, he only got to apply the torch for a few seconds, before the thing imploded.

It blew glass the length of the lab. There were flecks of glass down at the other end of the lab, a distance of around 50 feet.

I couldn't believe it. I wasn't there when this happened, but I used that lab, and I was finding bits of glass for several weeks afterwards, in all sorts of weird spots. You'd find pieces in sinks and so on.

Most of the glass stayed up the head end of the room, but there was still glass all the way down at the end. I just couldn't imagine how the pattern ended up like that.

I've imploded picture tubes at the city dump (landfill) back when I worked a maintenance job, and none of those did anything spectacular. They were all duds. I put a brick through the front of one and... nothing. Just loss of vacuum and nothing thrown back at me.

And the guy who carried out this feat, I don't know if he ever graduated. He would make one hell of a TV repair man :-) I could see him bringing his Bunsen burner over to your house now.

Paul

On 01/03/2021 14:11, T i m wrote: <snip>

+1 Mechanic mate just changed both the unload valve and non-return valve to cure same fault on a compressor.

I'd start with the non-return valve, they are cheap and it's the most likely to be crudded up. Machine Mart is one of many places to get them, if you have one handy.

Lee

I have a silent (Bambi) 25l compressor on a 25l cylinder compressor and if left pressurised (and it holds it's pressure for ages (days / weeks) the non return valve between the piston and the rest of the system can become stuck (closed).

I just undo the body, release the rubber tip and do it back up and it's good to go again.

I'm guessing it could easily also become contaminated, not allowing it to seat properly and so allowing some 'leak past' that you may be suffering (that wouldn't be traced as a conventional leak from any of the system etc).

Good luck in your quest. ;-)

Cheers, T i m