Sch 40 steel?


Postby SpudStuff » Sun Oct 15, 2006 3:44 pm

So is it okay to use the standard galvinized steel from home depot on a hybrid. I want it to at least be able to take 1000PSI. I have heard people say you can put unregulate co2 in it but I have never seen it done. Also are the class 150 unions(standard at the stores) able to take this pressure. I want to use 2" Sch 40 steel on the chamber and a 1" class 150 union. Can I tap into a end cap safely without weaking it too much or should I but a reducer?
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Postby markfh11q » Sun Oct 15, 2006 3:49 pm

Just remember threaded connections are supposed to reduce pipe rating by half.
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Postby SpudStuff » Sun Oct 15, 2006 3:59 pm

I already asked bout that here:http://localhost/forums/viewtopic.php?t=14689
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Postby Navigator7 » Sun Oct 15, 2006 6:49 pm

I think fittings fall into a class...Like Class 150 or Class 300.
Building what you want is doable it's just you must use rated fittings and pipe.... just like PVC.

At 1000 psi, I think you are sporting with the limits of the pipe....and definitely exceeding the class 150 rating.
You are working above the safety factor.

Check out Vitolicâ„¢.

We routinely used Vitolic fittings to run 350 PSI water in 4", 6", 8", 10" hose and pipe.
I pump concrete and use HD coupler version.
Pressures on concrete pipes can get to 900 to 1200 PSI.

I've had a lot of experience with 2" and below fittings and pipe at pressure.
They can take a lot of abuse.
Build what you want and test it with a grease gun?
There is a bunch of different ways to high pressure test.

What I've notice about using the wrong fittings or cobbling something together to get a job done....is an iffy pipe or plumbing setup simply doesn't last as long or fails after repeated uses.
We are talking hydraulic pressures of 1000-3500 psi.
Every case is different but small pipe and fittings can take a bunch of pressure without bursting but don't count on it to last day in and day out like an appropriate fitting would.

So...If you use Class 150 stuff to build a 1000 psi working pressure cannon....you are exposing yourself to risk.
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Postby SpudStuff » Sun Oct 15, 2006 7:20 pm

Is thay the stuff they use on fire sprinklers? The stuff with the red clamps?
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Postby SpudStuff » Sun Oct 15, 2006 7:27 pm

Just look at the prices! I cant affors $35 for a 2" cap!
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Postby markfh11q » Sun Oct 15, 2006 7:52 pm

Why not use welded fittings?

Or what about McMaster part # 4513K88? Takes up to 3,000 PSI... $9.69... meant for use on SCH 160 pipe nipples...
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Postby SpudStuff » Sun Oct 15, 2006 8:03 pm

And look ar the price of the nippples....
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Postby SpudStuff » Sun Oct 15, 2006 8:14 pm

I have ~$50 on this project.
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Postby Navigator7 » Sun Oct 15, 2006 8:18 pm

<blockquote id="quote"><font size="1" face="tahoma,verdana,arial" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by SpudStuff
[br]I have ~$50 on this project.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
OIC
Good!
Just lower the working pressure to the rating of the fittings and you might be good to go.
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