Brass Pressure Rating

maverik94 · Thu May 14, 2009 4:09 pm

Ok, I just spent a whopping $13 on some brass pipe and a brass cap. I was just wondering how much pressure this can stand up to. It is 4" long 3/4" pipe. It has slightly more than 1/10" walls. It is threaded and cost 10 dollars!!!!!!!! I was thinking of using it as the chamber for my .38 rifle. I will probobly not use it over 250 psi, maybe 300, no more (if I get a shock pump). Would this pipe hold up to these pressures? I'm pretty sure it will, but I dont want it blowing up in my face. Thanks Yall!

spudtyrrant · Thu May 14, 2009 4:18 pm

most copper can hold 300psi quite easily but no matter what the materials always look for the type and make sure it can stand the pressure your using the most common type of pressure rated coppers are type L and type M there are plenty other i just haven't seen them at my hardware store

MountainousDew · Thu May 14, 2009 6:12 pm

spudtyrrant wrote:most copper can hold 300psi quite easily but no matter what the materials always look for the type and make sure it can stand the pressure your using the most common type of pressure rated coppers are type L and type M there are plenty other i just haven't seen them at my hardware store

Okay SpudTyrrant, all of your last posts I have read have either been complete make believe, or they have been completely off subject... And this one falls under the category of "off subject". The above post, says nothing about copper, it is about brass... It says it in the title and in the actual text, you really need to pay attention if you want to help someone. And your capitalization is no better...

@Maverick94: I'm sorry that I had nothing to say about your post, but he has been annoying me a lot lately... And now that I made a new post, it might draw attention to your topic, and get your questions answered.

@Mods/PCGuy: I'm sorry to backseat moderate, but it needed to be said.

THUNDERLORD · Thu May 14, 2009 7:33 pm

And you didn't notice I created the same topic today???
WTF?
Oh I am no one, Just the THUNDERLORD is all.

I hope you delete this, combine with my post, OR...DIE!!!

covey12 · Thu May 14, 2009 7:47 pm

i would say that it could hold 150psi at least, but look at your parts, if they don't say anything you could ask the salesperson you bought it from

maverik94 · Thu May 14, 2009 8:37 pm

yeah, they don't say on them, they are for use with water, and that's pretty high pressure. @Thunderlord, Uhhh, this isn't the same question.

THUNDERLORD · Thu May 14, 2009 9:07 pm

maverik94 wrote:... @Thunderlord, Uhhh, this isn't the same question.

"Uhhh" whatever.
a question about brass pressure rating???
Whatever, I sort of would laugh if your face exploded.

maverik94 · Thu May 14, 2009 9:23 pm

hope the mods don't hear you say that, I have half a mind to report you for saying that.

THUNDERLORD · Thu May 14, 2009 9:41 pm

maverik94 wrote:hope the mods don't hear you say that, I have half a mind to report you for saying that.

That's all you can do byatch!!!

Got to go styudy some real shizitt... later homo.

8)

Biopyro · Fri May 15, 2009 2:46 am

!

Bearing in mind that 3/4" SCH 40 with a 0.15" wall has a rating of 688 psi, I think you'll be fine at 250-300psi.

inonickname · Fri May 15, 2009 5:02 am

maverik94 wrote:hope the mods don't hear you say that, I have half a mind to report you for saying that.

Don't bite to it.

In all honesty, you're fine. Brass is just an alloy of copper and speaking in terms of basic ratios it will have an increase in strength. As even moderately walled copper pipe has a burst pressure of over 5000 psi (in the sizes you're talking) it won't explode.

If 300 psi is all you're putting in it you're fine. Just remember to teflon (PTFE) the threads and bolt them down nice and far.

THUNDERLORD wrote:
maverik94 wrote:hope the mods don't hear you say that, I have half a mind to report you for saying that.
That's all you can do byatch!!!
Got to go styudy some real shizitt... later homo. 8)

Pull your head in.

Ragnarok · Fri May 15, 2009 6:43 am

Talking about that, where the hell have the mods been lately?
I haven't seen a post from any of them in three days.

But anyway, yes, this will EASILY hold 300 psi. Personally, I'd not be worried about it failing at three or four times that, assuming your dimensions are correct.

Technician1002 · Fri May 15, 2009 10:46 am

Ragnarok wrote:Talking about that, where the hell have the mods been lately?
I haven't seen a post from any of them in three days.

But anyway, yes, this will EASILY hold 300 psi. Personally, I'd not be worried about it failing at three or four times that, assuming your dimensions are correct.

I think they were out for spring break. :hiding: Be careful, they are back.

I wrote PCGUY several days ago and got a reply yesterday in regards with a problem posting pictures in the wiki. He fixed it.

Fri May 15, 2009 5:32 pm

I've been in every day you just don't know it!

As far as who is giving who a hard time, I see it coming from all!

KNOCK IT OFF OR ELSE! IT STOPS HERE!

Anybody else flaming members is going to seal their own fait!

Be nice to one another even if you don't agree!

WORD!!!!!!

SubsonicSpud · Fri May 15, 2009 6:03 pm

maverik94, brass and copper fitting designed for mains water will be able to take several hundred psi no problem, as they also factor in water hammer spikes in pressure for the pressure rating. Also a tip for the end cap, cut out a small disk of 2-3mm thick rubber and put it inside to act as a seal, also smear a little grease on the sealing face of the threaded pipe. I had problems getting large brass threaded end caps to seal properly at about 450psi, inserting a rubber sealing disk into the caps solved the problem, they usually only need hand tightening too.

Subsonicspud

Brass Pressure Rating

Donating Members