Relief's in place of burst disc's?

**Mouldy** · 25th April 2004, 17:10

Ok guys - I get the point now:sad:..

Isnt it somthing like...a 10bar pushfit will blow at 15bar? and a 12bar at 18bar etc...

Dave moulds
Team Turbine

**audrey_aka_leah** · 25th April 2004, 17:13

stop picking on him you lot!!!! grrrrr!!

so hes forgotten summut and just need help, is it a crime? sheesh, you lot act like hes some kind of idiot, gawd.. that gets me so mad!!!!

He needs a lil help, the least you can do is to help him, its not like one of you remember everything is it?

**m2xt** · 25th April 2004, 18:25

Audrey, not that I need to explain myself to you, I have a lot of time for Dave and Im sure he knows it.

**Mouldy** · 25th April 2004, 18:59

Thanks Paul, I know you have time for me, but I feel your comment about advise me on the push fits was harsh and sarcastic. I was not aiming any of my comments to ignore your comments, as I know you may have more knowledge on pneuamtics than I.
Thanks and sorry.

Dave moulds
Team Turbine

P.s. Thanks for your outburst of randomness Audrey

**m2xt** · 25th April 2004, 19:27

Dave, the question was not intended to be sarcastic and apologies if it came across that way. It was intended to encourage you to think through your argument rather than just be told no, do as you are told (which was in my opinion the Mentorn way).

Paul

**mikeyg** · 25th April 2004, 19:36

I like discussions like this. Learning all the time.

Pauls got a good point about explaining your argument (and health and safety is pretty damn serious).

**m2xt** · 25th April 2004, 20:06

See http://www.fightingrobots.co.uk/discus/messages/9/1332.html?1077738986 http://www.fightingrobots.co.uk/disc...tml?1077738986 for a more detailed explanation but in summary:

A failure mode of a regulator is to let by, thus pressurising the downstream low pressure components to full bottle pressure. This can be caused by foreign matter on the seat, a seat failure, scored seat etc. There are numerous manufacturers and types of pushfits, it would not be possible with any degree of confidence state at what over-pressure they will fail at. I have tested an 18 bar pushfit at 50 bar without failure. So, lets assume M2 has a regulator failure, the LP side pressure rises to 50 bar and the pneumatic system does not fail, I then fire the ram and no doubt a big bang as the ram explodes from mechanical failure. This is why M2 has always had a LP relief valve from day 1.

Another reason for the LP relief valve is to avoid the need for test pressure points. How does the tech checker know what pressure you are operating at? Simply by checking the LP relief valve certification.

Hope that helps explain some of the thinking behind the LP relief valve.

Paul

**Mouldy** · 25th April 2004, 20:31

Ah ha!....when you put it that way id best get 1

Dave moulds
Team Turbine

sorry for the miss-understandings

**audrey_aka_leah** · 26th April 2004, 11:26

Paul, as Dave had said, it did sound harsh and sarky, thats the only reason I was defending him, and sheesh... lighten up... :sad:

everybody knows about safety and other things, he was asking to verify what he wasnt sure about... as I dont know owt about bots NOR really give a monkey about, dont start lecturing me about whatevers

because I DONT CARE!