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Custom Pressure Regulator
Posted: Sun Dec 13, 2009 7:16 am
by velocity3x
While building my new cannon, I realized that I must build my own regulator as nothing exists with a high enough flow rate in that pressure output range.
The regulator case is 304 stainless
FOS @ 1000 psi=30 +/-
Output range = 0 - 1900psi
Internal orifice (smallest) .375" dia
Posted: Sun Dec 13, 2009 7:27 am
by POLAND_SPUD
hmmm nice... now what about your LP regulator ? is it also custom made or is it just an off the shelf part ?
also what about the launcher itself ? I would really like to see the main valve...
EDIT
I've just converted volume... are you sure it's .39ft^ @ 1000psi? that's about 11 000 ccm @ 1000psi
so... did you calculate it in this way -> volume X pressure in bars = flow and then you added '@ 1000 psi' by a mistake or is it just a really large gun ?
Posted: Sun Dec 13, 2009 7:35 am
by velocity3x
POLAND_SPUD wrote:hmmm nice... now what about your LP regulator ? is it also custom made or is it just an off the shelf part ?
You lost me. What LP regulator? The only LP regulator I have is on my BBQ.
EDIT
I've just converted volume... are you sure it's .39ft^ @ 1000psi? that's about 11 000 ccm @ 1000psi
so... did you calculate it in this way -> volume X pressure in bars = flow and then you added '@ 1000 psi' by a mistake or is it just a really large gun ?
The tank size is .39^ft and at 1000psi that = 26.5^ft at 14.7 psi.
Posted: Sun Dec 13, 2009 7:36 am
by Larda
Nice work!
Are you going to share the plans for this regulator?
Posted: Sun Dec 13, 2009 7:41 am
by POLAND_SPUD
lol sorry... I assume that LP has something to do with propane right ?
by LP reg I meant
low pressure...
EDIT
26.5^ft at 14.7 psi
but that's 750 L... so about 11 L of air at ~70 atm... 10L chamber volume is huge by my standards - given the fact that it runs at > 1000 psi means that either the gun is optimized for highest power and is large or it's simply huge
How large is the gun ? and what do you use as a source of air ?
Posted: Sun Dec 13, 2009 7:51 am
by velocity3x
Larda wrote:Nice work!
Are you going to share the plans for this regulator?
Eventually, if anyone is interested.
Posted: Sun Dec 13, 2009 7:56 am
by velocity3x
POLAND_SPUD wrote:lol sorry... I assume that LP has something to do with propane right ?
by LP reg I meant
low pressure...
EDIT
26.5^ft at 14.7 psi
but that's 750 L
How large is the gun ? and what do you use as a source of air ?
Barrel is 1.251id x 72". I use industrial cylinder gas for the pressure source.
Posted: Sun Dec 13, 2009 8:05 am
by POLAND_SPUD
so what about the main valve ? it's piloted/actuated using air at (relatively) low pressure, right ? I think I recall someone who mentioned that his gun regs air down to lower pressures for controlling the firing cycle
Posted: Sun Dec 13, 2009 8:23 am
by velocity3x
POLAND_SPUD wrote:so what about the main valve ?
Posted: Sun Dec 13, 2009 8:37 am
by Larda
velocity3x wrote:Larda wrote:Nice work!
Are you going to share the plans for this regulator?
Eventually, if anyone is interested.
I am interested.
Posted: Sun Dec 13, 2009 8:47 am
by velocity3x
Good memory!
Posted: Sun Dec 13, 2009 11:23 am
by roboman
By any chance, do you have the GCode for this? We have a Haas CNC lathe and mill at my high school, and I happen to need a high pressure regulator.
Posted: Sun Dec 13, 2009 11:59 am
by psycix
Now that's a shiny regulator, good job!
I'm interested in the plans as well.
Posted: Sun Dec 13, 2009 12:14 pm
by POLAND_SPUD
Good memory!
I now realize that you were referring to the low pressure (LP) regulator for the loading / firing cycles. It's off the shelf. I bought it from PALMER. I think it's called "Boulder"
well I was sure it was you but then when didn't know what I meant I begun to have doubts
BTW, Didn't we discuss this project earlier? I mean, a couple of months ago?
I remember that someone wanted to build a scaled up paintball gun valve as the main valve but I can't find it in my PMs
well, anyway it seems to be the best pneumatic on this site - it deserves to be discussed in a separate thread (preferably with lots of damage videos and pics
)
Posted: Sun Dec 13, 2009 12:48 pm
by velocity3x
POLAND_SPUD wrote:BTW, Didn't we discuss this project earlier? I mean, a couple of months ago?
I remember that someone wanted to build a scaled up paintball gun valve as the main valve but I can't find it in my PMs
No...it wasn't me. This unit is for 1.250 ball bearings