X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 20 Jan 2011 20:25:22 -0500 Message-ID: X-Original-Return-Path: Received: from imr-mb02.mx.aol.com ([64.12.207.163] verified) by logan.com (CommuniGate Pro SMTP 5.4c2a) with ESMTP id 4820983 for lml@lancaironline.net; Thu, 20 Jan 2011 18:02:22 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.207.163; envelope-from=rehbinc@aol.com Received: from mtaout-da02.r1000.mx.aol.com (mtaout-da02.r1000.mx.aol.com [172.29.51.130]) by imr-mb02.mx.aol.com (8.14.1/8.14.1) with ESMTP id p0KN1aYh020661 for ; Thu, 20 Jan 2011 18:01:36 -0500 Received: from user1-656b2de53 (adsl-068-157-189-102.sip.asm.bellsouth.net [68.157.189.102]) by mtaout-da02.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id D6DC1E000143 for ; Thu, 20 Jan 2011 18:01:35 -0500 (EST) X-Original-Date: Thu, 20 Jan 2011 18:01:35 -0500 From: REHBINC Subject: Re: [LML] Re: what is the correct tubing for Oxygen? X-Original-To: "Lancair Mailing List" In-Reply-To: X-Original-Message-ID: <6059ed53.8cc3.462e.b47c.e27f6e237b53@aol.com> References: X-Mailer: Nexus Desktop Client 3.3.6.1 MIME-Version: 1.0 Content-Type: MULTIPART/alternative; BOUNDARY=8c716326-a0b0-4418-bd11-f2277fe51060 Content-Transfer-Encoding: 8BIT x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:186450880:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d33824d38becf3847 X-AOL-IP: 68.157.189.102 --8c716326-a0b0-4418-bd11-f2277fe51060 Content-Type: TEXT/plain; charset=us-ascii Matt, Oxygen service is a good time to refer to, and live by, the appropriate codes and standards. Refer to organizations like the Compressed Gas association. In general, I would keep aluminum out of any Oxygen system. The more reactive the oxidation process for a given material, the more you want to keep it away from Oxygen. Aluminum is one of the most reactive metals. If anything (like a dust particle in the stream) scratches off the oxide layer and exposes aluminum metal, the tube may burst into flame and will burn VIOLENTLY. The result is not something you want to be around. I have seen a couple of instances where carbon steel has been ignited in high pressure Oxygen systems and the result was spectacular. Using a CO2 bottle for Oxygen is another method that I have seen cause a lot of excitement. Each of these instances either ruined or took some ones life. Make sure ALL valves and regulators used are rated for Oxygen service. Simply opening or closing the wrong ones can be catastrophic. Also, keep everything squeaky clean and use only approved lubricants and thread dope anywhere it can come into contact with Oxygen. Austenitic stainless steel (300 series) is probably the tubing material you want for your application, but look at the codes for the pressures, temperatures and velocities you will be using. Rob In a message dated 01/19/11 12:23:22 Eastern Standard Time, artbertolina@earthlink.net writes: Matt You want to put a regulator on the tank. Talk to Mountain High in Redmond OR Art ----- Original Message ----- From: Matt losangeles To: lml@lancaironline.net Sent: Tuesday, January 18, 2011 6:13 PM Subject: [LML] what is the correct tubing for Oxygen? Hello all, I am needing to run some hard line tubing for an oxygen system and I am wondering what type is correct. I looked in the FAA publication and it calls for some sort of copper tubing. I would suspect that aluminum tubing would work just as well if not better plus I likely already have it. I am wondering what is the correct type and what inside diameter someone would suggest to connect directly to the oxygen tank itself. The tank has a maximum pressure of 2014lbs. Would the 5052 stuff that is used on the Legacy landing gear system good enough or is something stronger required? What about 6061. I see that is another type that is easy to get my hands on. Thanks for any info. Matt --8c716326-a0b0-4418-bd11-f2277fe51060 Content-Type: TEXT/html; charset=utf-8 Content-Transfer-Encoding: 8BIT
Matt,
 
Oxygen service is a good time to refer to, and live by, the appropriate codes and standards. Refer to organizations like the Compressed Gas association.
 
In general, I would keep aluminum out of any Oxygen system. The more reactive the oxidation process for a given material, the more you want to keep it away from Oxygen. Aluminum is one of the most reactive metals. If anything (like a dust particle in the stream) scratches off the oxide layer and exposes aluminum metal, the tube may burst into flame and will burn VIOLENTLY. The result is not something you want to be around.
 
I have seen a couple of instances where carbon steel has been ignited in high pressure Oxygen systems and the result was spectacular. Using a CO2 bottle for Oxygen is another method that I have seen cause a lot of excitement. Each of these instances either ruined or took some ones life. 
 
Make sure ALL valves and regulators used are rated for Oxygen service. Simply opening or closing the wrong ones can be catastrophic. Also, keep everything squeaky clean and use only approved lubricants and thread dope anywhere it can come into contact with Oxygen.
 
Austenitic stainless steel (300 series) is probably the tubing material you want for your application, but look at the codes for the pressures, temperatures and velocities you will be using.
 
Rob
 
 
In a message dated 01/19/11 12:23:22 Eastern Standard Time, artbertolina@earthlink.net writes:
Matt
You want to put a regulator on the tank. Talk to Mountain
High in Redmond OR
Art
----- Original Message -----
Sent: Tuesday, January 18, 2011 6:13 PM
Subject: [LML] what is the correct tubing for Oxygen?

Hello all,
 
I am needing to run some hard line tubing for an oxygen system and I am wondering what type is correct. I looked in the FAA publication and it calls for some sort of copper tubing. I would suspect that aluminum tubing would work just as well if not better plus I likely already have it. I am wondering what is the correct type and what inside diameter someone would suggest to connect directly to the oxygen tank itself. The tank has a maximum pressure of 2014lbs. Would the 5052 stuff that is used on the Legacy landing gear system good enough or is something stronger required? What about 6061. I see that is another type that is easy to get my hands on.
 
Thanks for any info.
 
Matt


 
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