1000psi PRV

[Mouldy]

As per title- Pm me with a price if you have one.

[maddox10]

Re: 1000psi PRV

When do you need them?

[robotwars]

Re: 1000psi PRV

I need one too, where sells them ?

[Mouldy]

Re: 1000psi PRV

http://www.esska-tech.co.uk/esska_eng_s ... ifica.html could work if wound right up? quite cheap.. you'd need a G 1/4 tap to make it fit your buffer etc or an adaptor to fit it to BSP i guess. But the price seems good...

[mightymouse]

Re: 1000psi PRV

G 1/4 is 1/4BSPP

Good site that Dave - added to my Favourites already.

60bar is around 860psi, but a 2kg CO2 bottle with 2kg of gas is only 700ish psi when I put a gauge on one years ago, so should work - FRA rules say that 1000psi prv has to be certificated, maybe we could get Kane to test and calibrate some.

[robotwars]

Re: 1000psi PRV

Let's be real they are a waste of time, we should take them out the rules !!
The burst disc In the bottle covers it anyway.

John

[jonny]

Re: 1000psi PRV

I have a fp prv, dave has first refusal though .

[Mouldy]

Re: 1000psi PRV

Yep, i thought it might be but wasnt sure if the G ment it was the finer thread type you often see in industry for compression type fittings... being BSP makes it even better...

Also yeah i figured 1000psi which most roboteers seem to state isnt really true... i figured it would be around 750psi max as thats when co2 becomes liquid?

If you pay the exstra £2 or whatever it comes with a certificate... which means it should be allowed within the FRA rules IMO.

@John;

Burst discs dont go at 1000spi... the 1000PSI PRV rule was put into place to protect against components rated to 1000psi tops... so if someone turns up to an event with a buffer tank theyve tested at 1000psi... they wont risk letting that component go over pressure.... (Sorry if thats teaching you to suck eggs, i guess you already know that)

[robotwars]

Re: 1000psi PRV

Dave stand corrected...

I thought that if you can't ever get 1000psi in the system then what's the point.
Just looked at a burst disc, didn't realise they were at 3000psi!!

Take it back, just something I've been thinking about over the last few months.

John

[blazerbotics]

Re: 1000psi PRV

I think it was also to stop people using other gases.

[robotwars]

Re: 1000psi PRV

Yeah roger plant using nitrogen in wheelie big cheese !!

[Mouldy]

Re: 1000psi PRV

just ordered one, came to £23.39 with shipping etc...

When i get it, ill hook it up directly to a co2 nut , screw it onto the bottle and post results for anyone who's in need of one...will be after telford though as ive got no co2 here :sad: ...thanks in advance for your co2 Alan :P

Jonny- if this one doesnt turn up/work ill be interested

[maddox10]

Re: 1000psi PRV

Interesting site. The springs I need for the PRV's are almost as expensive as those 60 bar PRV's.

Also, the PRV doesn't have to be rated at 1000psi, it's the max allowed by the rules.

[beast]

Re: 1000psi PRV

@John
what you and I are trying to say is whats the point in a 1000 psi valve when

a co2 bottle at proper weight ie 2kg no more is filled properly to 42 BAR whick is 617 psi
ok if its hotter the bottle presure will be higher (we all know that) but when people are useing buffer tanks and we fill the system we are normally filling say another 2kg of empty tank which does 1/2 the presure I have tested this (not on a hot day) and the presure was 350 psi now a 1000 psi valve will never blow off i have had one in the system for over 10 years now and it has never blown off.
as long as the bottle is never over filled you should not have a problem.

and as we always arm the robot in the areana having a safty valve which does not blow off in my opinion is a waste of time as it does not make the robot any safer
Also burket valves are rated to 50 bar which also is less than 1000 psi of which i have uesed for over 10 years as well
so Can i ask whats the point if we are only going to use CO2 ?

[Mouldy]

Re: 1000psi PRV

Alternatively John you could prove with certification that your entire setup will operate safely on 3000psi

Just because you have massive buffer tanks and know not to fill your bottle to the max when it's frozen on a hot day doesn't mean everyone else does...