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Title: 540 Regulator Modification Post by Mr. Happy on Oct 18th, 2005, 11:54am Increasing flow rate on 540 regulators - Sean C got one of the 540 regulators I have available. Although tested to make sure it worked, there was no way to determine the actual flow rate other than the gauge. It seemed extremely slow to him. On checking some of the others laying in the O2 Bin of Goodies, I found the same thing. Some blasted air great, others were much slower, even tho the gauge said 15 lpm were flowing thru. Not cool. Back to the lab. With a few simple tools, a 540 can be turned into a veritable wind tunnel. Why do this, you ask? Good question (I guess.) When jumping on canned air in the middle of the night, already ramped up to Max HeadBoom, I can huff much faster than 15 lpm. MUCH faster. Once things come under control, the flow rate can be turned WAY down, and easier, slower breathing suffices. Here's some pix, and a step by step so you too can enjoy the bounty of heavy huffing. Unscrew the exhaust port on the regulator. You will need to put the regulator body in a vice, and use the proper wrench to undo it. http://mushys.com/O2/540a1.jpg It'll look like this. Most have the #77 stamped on them. http://mushys.com/O2/540a2.jpg Drill out the small hole in the center with a small drill bit. http://mushys.com/O2/540a3.jpg Put it back together, and hook it up to your tank. WOOSH. Aces......... Please don't attempt this if you have the wrong tools, or are Extremely Stupid. You're on your own when it comes to Reg Mods. It's things like this that make my day. RJ PS: Don't forget to order a Clustermasx (http://clustermasx.com) today! PPS: If you got one of these puppies from me, are not satisfied with the flow rate, and don't have any tools (or are too stupid,) you can mail it back. Will return unit with increased flow, or replace with another, as long as I have "others" left. Again, I ain't liable for squat. |
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Title: Re: 540 Regulator Modification Post by rextangle on Oct 18th, 2005, 2:00pm WARNING: Do not drill anything while the regulator is still attached to 02 tank. Do not use drill near 02 tank either. Sounds like a stupid advice til your read the Darwin awards! |
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Title: Re: 540 Regulator Modification Post by Jonny on Oct 21st, 2005, 5:07pm on 10/18/05 at 11:54:07, Mr. Happy wrote:
What size drill bit? Man, I have to follow you around dont I? ;;D |
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Title: Re: 540 Regulator Modification Post by rextangle on Oct 21st, 2005, 5:18pm Jonny, it's exactly the size of a Wotan nickel... |
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Title: Re: 540 Regulator Modification Post by pattik on Oct 21st, 2005, 6:26pm Hap, what was the size of that drill bit anyway? [smiley=huh.gif] |
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Title: Re: 540 Regulator Modification Post by Mr. Happy on Oct 21st, 2005, 9:42pm 1/16" does nicely, thank you very much. Anything smaller can, kind of......Shatter. Of course, moving upscale, a 1/8 or 3/16 bit will really put you in a Cat 5 whirlwind. Empty an E tank in 3.27 minutes. Probably give you a nosebleed, too. Stick with a 1/16" bit(1), unless you Just Can't Get Enough Glue. RJ (1) - 1/16" equals 1.5875 mm |
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Title: Re: 540 Regulator Modification Post by Lizzie2 on Oct 24th, 2005, 1:07am on 10/18/05 at 14:00:37, rextangle wrote:
This is a portion of an actual article I received as being on a mailing list for the university's Emergency Medicine Society...I totally had to share it after reading your post! Quote:
Oh the things we have seen...! [smiley=laugh.gif] |
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