so like the sealing face from a manufactured co2 gun? do you know the material?wyz2285 wrote:The sealing came from a co2 pin valve pin, about epoxy I used one with 360 bar rated.
also are your "valve pins" from a blowgun?
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urgle the danish cow
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also are your "valve pins" from a blowgun?
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Gippeto
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Uh huh.
Did you calculate what the fail pressure would be?
Edit: urgle...most co2 guns use urethane for seals.
Did you calculate what the fail pressure would be?
Edit: urgle...most co2 guns use urethane for seals.
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inonickname
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Gippeto knows what he's talking about.
Pressure test it if you want to actually be safe.
And by pressure test, I don't mean pump it up to 300 psi below the working pressure. I mean test it hydrostatically with a safety margin.
And trust me, it can fail.
Pressure test it if you want to actually be safe.
And by pressure test, I don't mean pump it up to 300 psi below the working pressure. I mean test it hydrostatically with a safety margin.
And trust me, it can fail.
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wyz2285
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And trust me, it can fail.
nobody said anything about Gun Freak´s gun...CpTn_lAw wrote:"yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? "
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Gun Freak
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My gun is held together by threaded fittings and carefully soldered joints and has a valve that has held 2,000 psi over night by another member here.
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Lockednloaded
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3000 actuallyGun Freak wrote:My gun is held together by threaded fittings and carefully soldered joints and has a valve that has held 2,000 psi over night by another member here.
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Gun Freak
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Gahh I didn't want to say 3000 and be wrong!!!
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wyz2285
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I belive my epoxy will hold more than your tin weld, it´s 3cm of epoxy in a 1cm2 area to hold only 70 bar...
CpTn_lAw wrote:
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Gun Freak
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I believe that is irrelevant because I only plan on using 400 psi 
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Do you think Argon would be a suitable propellant gas?
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jackssmirkingrevenge
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It's denser than air so that will mean less performance for a given pressure than if you were using air or nitrogen, but it's less dense than CO<sub>2</s>.Goats spudz wrote:Do you think Argon would be a suitable propellant gas?
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Goats spudz
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I think ill use Nitrogen then, thanks
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wyz2285
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Some updates:
My epoxy leaked
(plz don´t laugh at me), and I know it´s almost impossible to repair it (unless take the valve off, clean the epoxy and glue it again).
So I made a kind crazy decision: make my own valve, with o-ring seal. The advantage is obvious, I can fix the valve on the chamber with screws and when I have to repair the valve, I just have to unscrew it. Well, I made the valve out off nylon, because I don´t have a metal lathe, only my drill press.
Anyway, I made it
, with 2 o-rings(still need to make the internals). Now I won´t be using 1000 psi, only 60 bar. The area is about 3.33 cm2, at 60 bar it will be 200.4 kg. I´m not worried about the valve blow up, but the screw part, where shout I place the screws?
My epoxy leaked
(plz don´t laugh at me), and I know it´s almost impossible to repair it (unless take the valve off, clean the epoxy and glue it again).So I made a kind crazy decision: make my own valve, with o-ring seal. The advantage is obvious, I can fix the valve on the chamber with screws and when I have to repair the valve, I just have to unscrew it. Well, I made the valve out off nylon, because I don´t have a metal lathe, only my drill press.
Anyway, I made it
, with 2 o-rings(still need to make the internals). Now I won´t be using 1000 psi, only 60 bar. The area is about 3.33 cm2, at 60 bar it will be 200.4 kg. I´m not worried about the valve blow up, but the screw part, where shout I place the screws?- Attachments
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- Chamber ID
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CpTn_lAw wrote: