Rating of Pipe Fittings

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Humph Active Contributor Join Date: May 2008 Posts: 13	Rating of Pipe Fittings 07/16/2009 9:49 AM
	What is the Class equivalent rating of pipe fittings in pounds? What is the relationship btw class ratings and pounds ratings of pipe fittings? Is pipe fiiting of , say class 1500, the same as a pipe fitting of 1500 lbs?
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RVZ717 Guru Join Date: Oct 2008 Location: City of Roses. Posts: 2056 Good Answers: 101	#1 Re: Rating of Pipe Fittings 07/16/2009 11:37 AM
	As far as I know a 3000# fitting is rated to withstand 3000 PSI. __________________ Don't believe everything you read on the Internet!
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Abdel Halim Galala Guru Join Date: Feb 2007 Location: Cairo, Egypt Posts: 1733 Good Answers: 248	#2 In reply to #1 Re: Rating of Pipe Fittings 07/17/2009 2:25 AM
	"As far as I know a 3000# fitting is rated to withstand 3000 PSI". No. I'd like you to know that there are a lot of people have the same thinking, therefore, please refer to CR4 Thread Pound Rating for flange rating, and CR4 Thread Piping Standards and Fittings for fitting rating . __________________ It is better to be defeated on principles, than to win on lies!
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#3 In reply to #1 Re: Rating of Pipe Fittings 07/17/2009 3:37 AM
	That is incorrect and it is important not to make that inference. Please refer to the links in Abdel Halim Galala's posting above. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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RVZ717 Guru Join Date: Oct 2008 Location: City of Roses. Posts: 2056 Good Answers: 101	#4 Re: Rating of Pipe Fittings 07/17/2009 11:45 AM
	Thank you for the correction... interesting, my fittings supplier uses this rating system... but they machine all their own fittings, so I suppose they can put whatever numbers they wish. In fact I've had a couple manufacturers use the "same number as the rating" system... So I suppose my new question would be "Why?" why wouldn't we make it simple... 150# = 150psi, 1500#=1500psi, 3000#= 3000psi?? At least thats how I order all my fittings, but Its a supplier choice I suppose. Sorry for the Incorrect info (at least I said "as far as I know"). (this is really something I should not have misunderstood, as I work in the Industry. More and More It seems like the Industrial Hydraulics Industry is so removed from the rest, as I always order either 1500#, 3000#, 6000#, or 10,000# fittings, which have the same pressure ratings... but again, this industry always amazes me... we still have no ANSI symbol standards) And thank you again for the correction __________________ Don't believe everything you read on the Internet!
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RVZ717 Guru Join Date: Oct 2008 Location: City of Roses. Posts: 2056 Good Answers: 101	#5 Re: Rating of Pipe Fittings 07/17/2009 6:26 PM
	Well, I'm getting hungry. I guess I ought to wipe some egg off my face and make a nice big omelet. Yum. __________________ Don't believe everything you read on the Internet!
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RVZ717 Guru Join Date: Oct 2008 Location: City of Roses. Posts: 2056 Good Answers: 101	#6 Re: Rating of Pipe Fittings 07/17/2009 6:41 PM
	__________________ Don't believe everything you read on the Internet!
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