Burkerts were re tested gland found to be fine for 1000 psi, the only problem is they can't switch it at there nominal voltage so you have to over volt them or run a 12v coil
Yes but there is a difference between testing one burket out of thousands and testing the burket that you just purchased. If the max rated pressure of a component in the system is less than the opening pressure of the safety device then what is the point of having a safety device?
Surely it stands to reason that if the item you are using hasn't been designed or tested to 1000 psi then it isn't rated to 1000 psi? Either way its your hand that you are switching the gas on with and not mine.
Hydro test them, water pressure testing is safe(ish) - gas testing isn't.
The burkert 5404 bodies are pressure cast. The chance there is a defective valve is rather small. And even so, the wall thickness of the brass is more than enough to withstand a lot more pressure.
The part that will fail if hugely overpressured is the seal between stainless solenoid core and the body.
Oh well, how many Burkert-body pressure failures did we see in the 14 years of use in European Robot Wars?
Or bottle-burst disk going?
Well Burket rate them for 50 Bar for some reason - maybe they don't know what they're doing
What about rule 9.7 of the build regs - All pneumatic components used with pressures greater than 50psi (3.4bar) must be rated/ tested to at least the maximum pressure available in that part of the system.
And 9.8.1 - Rating Pressure relief devices must have a rating of 1000psi (68bar) or 110% of the pneumatic component with the lowest maximum working pressure rating protected by that particular pressure relief device, whichever is the lower.
14 years use, maybe its down to luck? Like I said, its your hand not mine.
A lot of comments about but my robot can take over 1000psi....sure it can... but the robot next to you in the pits might not be able to take it... we have to work to a common rule set at the end of the day.
Burket HAVE to advertise the rated pressure as less then it will actually go upto by law.
I had turbulence blow a PRD once at an event on a 2kg bottle... and ive seen about 5 PRD's on the 600g bottles and paintball bottles go
.......and that's probably where the problem is. If the seal goes then what happens? It being connected to the flipper/axe/whatever else there is.Originally Posted by maddox10
I'm certain Mike Lamber had the Burkerts pressure tested to 90bar to keep Mentorn happy, it probably wont work at that pressure, but as long as it doesn't blow. Best ask him about it.
People have been using buckets in their fp systems for years, anyone had one blow?
yup- people have had swarf get into them etc...
Also... why are you getting so hung up on burkets? ... again.. not everyone uses them.
.......and that's probably where the problem is. If the seal goes then what happens? It being connected to the flipper/axe/whatever else there is.
If the robot it build according the rules, nothing will happen, as the weapon has to be locked in the position.
And with hugely overpressured , we're talking 2000 psi or more. I'm willing to pressuretest all Burkert 5404's in use in RW up to 1500psi.
Those won't fire in most cases, but won't leak.
Because 50 bar is the pressure Burkert can garanty the soleno¯d will do the job at the rated voltage of the coil. Nothing to do with the pressure capacity of the body.
Also, the dimensions of the body are standarized. There are several brands of valves you perfectly can interchange in size and mounting. But for now Only Burkert and the lesser know Slovakian Alpha valve are know to be afforable and useable for our applications.
And why the sudden campagn against Burkerts?
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