Rocksolid Light

Welcome to novaBBS (click a section below)

mail  files  register  newsreader  groups  login

Message-ID:  

[FORTRAN] will persist for some time -- probably for at least the next decade. -- T. Cheatham


tech / rec.aviation.soaring / Re: Oxygen Systems at Clubs

SubjectAuthor
* Oxygen Systems at ClubsPatrick (LS6-b EH)
+- Re: Oxygen Systems at ClubsGeorge Haeh
`* Re: Oxygen Systems at ClubsMark Mocho
 `* Re: Oxygen Systems at ClubsMark Mocho
  +- Re: Oxygen Systems at ClubsEric Greenwell
  `* Re: Oxygen Systems at ClubsGeorge Haeh
   `* Re: Oxygen Systems at ClubsMark Mocho
    `* Re: Oxygen Systems at ClubsJay Campbell
     `* Re: Oxygen Systems at ClubsRichard Pfiffner
      `* Re: Oxygen Systems at Clubs2G
       `* Re: Oxygen Systems at ClubsDan Marotta
        `- Re: Oxygen Systems at ClubsDan Daly

1
Oxygen Systems at Clubs

<2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26743&group=rec.aviation.soaring#26743

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a0c:b3cf:0:b0:456:4e1b:8da4 with SMTP id b15-20020a0cb3cf000000b004564e1b8da4mr1366308qvf.86.1651816208747;
Thu, 05 May 2022 22:50:08 -0700 (PDT)
X-Received: by 2002:a81:6d8d:0:b0:2fb:22fc:bcb6 with SMTP id
i135-20020a816d8d000000b002fb22fcbcb6mr1296068ywc.152.1651816208453; Thu, 05
May 2022 22:50:08 -0700 (PDT)
Path: i2pn2.org!i2pn.org!weretis.net!feeder6.news.weretis.net!news.misty.com!border2.nntp.dca1.giganews.com!nntp.giganews.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Thu, 5 May 2022 22:50:08 -0700 (PDT)
Injection-Info: google-groups.googlegroups.com; posting-host=2001:56a:7173:4d00:18bc:56e9:ac1f:80f6;
posting-account=vGqgEwoAAABNgwpcv8O-SRmB-EiZzXf2
NNTP-Posting-Host: 2001:56a:7173:4d00:18bc:56e9:ac1f:80f6
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
Subject: Oxygen Systems at Clubs
From: patrickm...@gmail.com (Patrick (LS6-b EH))
Injection-Date: Fri, 06 May 2022 05:50:08 +0000
Content-Type: text/plain; charset="UTF-8"
Lines: 11
 by: Patrick (LS6-b EH) - Fri, 6 May 2022 05:50 UTC

Hey friends, our club is thinking about a O2 system and would like some feedback on other systems - that you're proud of.

- trailer-based
- fixed filling
- pump vs. filled bottles

Right now rely either on the generosity of a member, or a O2 cart that moves around the region and isn't always available.

Thanks for your constructive input.

Patrick
Cu Nim

Re: Oxygen Systems at Clubs

<7fbd795e-f0c6-4eab-8d24-3a5fe7b38dedn@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26747&group=rec.aviation.soaring#26747

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a0c:fb4d:0:b0:456:3a15:30d7 with SMTP id b13-20020a0cfb4d000000b004563a1530d7mr3455054qvq.93.1651855422756;
Fri, 06 May 2022 09:43:42 -0700 (PDT)
X-Received: by 2002:a25:c0d7:0:b0:64a:250:996c with SMTP id
c206-20020a25c0d7000000b0064a0250996cmr3183268ybf.512.1651855422539; Fri, 06
May 2022 09:43:42 -0700 (PDT)
Path: i2pn2.org!i2pn.org!weretis.net!feeder8.news.weretis.net!proxad.net!feeder1-2.proxad.net!209.85.160.216.MISMATCH!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Fri, 6 May 2022 09:43:42 -0700 (PDT)
In-Reply-To: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=207.81.151.137; posting-account=HXpYhgoAAAArQT9fDMQvA_1C5-QRLYRs
NNTP-Posting-Host: 207.81.151.137
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <7fbd795e-f0c6-4eab-8d24-3a5fe7b38dedn@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: george.h...@gmail.com (George Haeh)
Injection-Date: Fri, 06 May 2022 16:43:42 +0000
Content-Type: text/plain; charset="UTF-8"
 by: George Haeh - Fri, 6 May 2022 16:43 UTC

Hey Patrick,

I dropped off the ASC O2 trailer and hose box at CuNim a couple days ago. It's looking for a pull to the NATS.
You're welcome to have a look.

The tubing was replaced with hoses aka pigtails.

Somehow a 12" hose ordered for 12" between cylinders ends up 17.75" long when fittings are added which makes problems with minimum bend radius.
But it seems manufacturers don't make up hoses shorter than 12".

The cylinders are really heavy; so you need a trailer chassis up to the job.

Re: Oxygen Systems at Clubs

<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26748&group=rec.aviation.soaring#26748

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a05:622a:1301:b0:2f3:af1d:aa57 with SMTP id v1-20020a05622a130100b002f3af1daa57mr3785703qtk.257.1651857876146;
Fri, 06 May 2022 10:24:36 -0700 (PDT)
X-Received: by 2002:a25:778e:0:b0:648:3dc0:b00c with SMTP id
s136-20020a25778e000000b006483dc0b00cmr3333620ybc.162.1651857875868; Fri, 06
May 2022 10:24:35 -0700 (PDT)
Path: i2pn2.org!i2pn.org!weretis.net!feeder8.news.weretis.net!proxad.net!feeder1-2.proxad.net!209.85.160.216.MISMATCH!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Fri, 6 May 2022 10:24:35 -0700 (PDT)
In-Reply-To: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=23.128.32.100; posting-account=CT-ANQoAAABIQxC6uYerBUnoKmuMv8eC
NNTP-Posting-Host: 23.128.32.100
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: markmoch...@gmail.com (Mark Mocho)
Injection-Date: Fri, 06 May 2022 17:24:36 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
 by: Mark Mocho - Fri, 6 May 2022 17:24 UTC

I've set up several Oxygen refill stations/carts over the years, starting with our hang gliding club in 1992. I think the easiest is a single cylinder with a simple transfill adapter from Mountain High. However, the single cylinder option, while relatively inexpensive, drains quickly after multiple fills, resulting in much less pressure in the target cylinder. A better solution is a multiple cylinder cascade system that allows for lower pressure cylinders in the cascade to provide the bulk gas (by volume) which is then topped off by the cylinders containing higher pressure. For example, three cylinders in the cascade might contain 800, 1,400 and 2,000 psi after several refills. You bring in a cylinder from your glider with 700 psi remaining.. First you connect it to the lowest pressure cylinder (800 psi) and bring it up to an equal pressure. Then, you close the valve on the 800 psi cylinder, open the 1,400 psi bottle and top off. Finally you close the second cylinder valve and open the 2,000 psi valve and bring your cylinder to the highest pressure possible. Then you close all the valves and bleed the O2 from the fill line and disconnect your cylinder. Typically, the three cascade cylinders might now show 750, 1,200 and 1,900 psi, with yours also at 1,900 psi.

There will always be some wasted pressure, as it seems that everyone wants to refill as soon as their glider cylinder pressure drops below 1,000 psi' This means that the lowest cylinder in the cascade gets replaced to make room for a new high pressure cylinder while still containing half its contents.
Mountain High sells all of the required transfill hose kits with end connections, bleed valves and pressure gauges. They can also outfit you with connections to set up a multiple cylinder cascade. (https://www.mhoxygen.com/product-category/ground-support-equipment/?msclkid=2577c5b9cd5e11ec8312274cbcf435f3) I consider three cylinders to be the minimum needed. Four, or even five cylinders in the cascade are much more efficient at keeping the top pressure as high as possible, but at a higher expense if you are buying or leasing the cylinders. Also, the cylinders are very heavy (300 lbs.), and anything over three cylinders is a bear to move around.

For a trailer, I suggest an inexpensive flat trailer from a supplier like Harbor Freight (https://www.harborfreight.com/automotive/trailers-towing/1090-lb-capacity-40-12-in-x-48-in-utility-trailer-62665.html) You will need to fabricate a cradle system to securely hold the cylinders. You definitely don't want them coming loose and falling off while hauling it around the airport. "MythBusters" did a great experiment where they knocked the valve off a pressurized cylinder and watched the bottle blow through a concrete barrier.

Make sure the cradle you build has some leeway to handle variations in cylinder size. Most are pretty close in diameter, but length can vary by several inches. "Aviators Breathing Oxygen" is preferred for the main cylinders, as their capacity is usually higher (335 cu. ft. vs, 300 cu. ft.) and they are also generally filled to 2,200 psi. Welding Oxygen cylinders are normally 2,000 psi, And, in spite of what some people still believe, there is absolutely no difference between Aviators, Welding or Medical oxygen. Except for the price, which is determined by the expected liability (read: lawyers) involved. Medical Oxygen falls under Food and Drug Administration (FDA) rules, and requires a prescription. Welding and Aviators O2 are under Department of Transportation (DOT) protocols.

You will also probably need a set of adapters to go from the CGA-540 fitting on the end of the refill line to accommodate other fill valve systems typically found in gliders. The most common is a "Schrader" valve, which looks like the fitting on a car tire (but isn't), a European style DIN-477 valve or a CGA-870 fitting. (Also referred to as a "Post type," "Medical," or "Puritan-Bennett.) You may also need a refill hose extension, as some gliders (notably Schempp-Hirth) have their onboard cylinders buried deep in the fuselage and are difficult to refill and worse to try to remove.

You mentioned a pump as an option. From what I understand (having little experience with industrial pressure concentrators) they require an air compressor to power the piston pump and a source of oxygen (meaning a cylinder. The one I have used is from Hydraulics International, costs about $5,000 and, with 175 psi. air pressure for the pump, can raise the available cylinder pressure about 50%. This means that you can increase the 2,000 psi in your fill cylinder to about 3,000 psi in your target cylinder. This necessarily implies some risk, as 3,000 psi is above the rated capacity of most commercially available portable cylinders. Personally, I would discourage their use.

Re: Oxygen Systems at Clubs

<cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26749&group=rec.aviation.soaring#26749

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a05:620a:d87:b0:67b:311c:ecbd with SMTP id q7-20020a05620a0d8700b0067b311cecbdmr3182082qkl.146.1651858233647;
Fri, 06 May 2022 10:30:33 -0700 (PDT)
X-Received: by 2002:a81:6dd0:0:b0:2f8:d996:14c6 with SMTP id
i199-20020a816dd0000000b002f8d99614c6mr3707754ywc.41.1651858233479; Fri, 06
May 2022 10:30:33 -0700 (PDT)
Path: i2pn2.org!i2pn.org!weretis.net!feeder8.news.weretis.net!news.szaf.org!news.uzoreto.com!npeer.as286.net!npeer-ng0.as286.net!peer02.ams1!peer.ams1.xlned.com!news.xlned.com!peer03.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Fri, 6 May 2022 10:30:33 -0700 (PDT)
In-Reply-To: <fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=23.128.32.100; posting-account=CT-ANQoAAABIQxC6uYerBUnoKmuMv8eC
NNTP-Posting-Host: 23.128.32.100
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com> <fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: markmoch...@gmail.com (Mark Mocho)
Injection-Date: Fri, 06 May 2022 17:30:33 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 1890
 by: Mark Mocho - Fri, 6 May 2022 17:30 UTC

Somehow a 12" hose ordered for 12" between cylinders ends up 17.75" long when fittings are added which makes problems with minimum bend radius.
But it seems manufacturers don't make up hoses shorter than 12".

You CAN get pigtails made smaller, but still too long to fit between cylinders side by side. What I recommend is running the pigtails in an "S" curve. I can send a photo if you are interested. Another option is a small diameter copper line between cylinders, but it is more susceptible to damage, and if it fails, the results can be very dangerous.

Re: Oxygen Systems at Clubs

<t53t1g$13l6$1@gioia.aioe.org>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26751&group=rec.aviation.soaring#26751

 copy link   Newsgroups: rec.aviation.soaring
Path: i2pn2.org!i2pn.org!aioe.org!q/aGra0dEg4v69S15xaqMA.user.46.165.242.75.POSTED!not-for-mail
From: own...@thegreenwells.netto (Eric Greenwell)
Newsgroups: rec.aviation.soaring
Subject: Re: Oxygen Systems at Clubs
Date: Fri, 6 May 2022 12:30:55 -0700
Organization: Aioe.org NNTP Server
Message-ID: <t53t1g$13l6$1@gioia.aioe.org>
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com>
<cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Info: gioia.aioe.org; logging-data="36518"; posting-host="q/aGra0dEg4v69S15xaqMA.user.gioia.aioe.org"; mail-complaints-to="abuse@aioe.org";
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101
Thunderbird/91.9.0
X-Notice: Filtered by postfilter v. 0.9.2
Content-Language: en-US
 by: Eric Greenwell - Fri, 6 May 2022 19:30 UTC

On 5/6/2022 10:30 AM, Mark Mocho wrote:
> Somehow a 12" hose ordered for 12" between cylinders ends up 17.75" long when fittings are added which makes problems with minimum bend radius.
> But it seems manufacturers don't make up hoses shorter than 12".
>
> You CAN get pigtails made smaller, but still too long to fit between cylinders side by side. What I recommend is running the pigtails in an "S" curve. I can send a photo if you are interested. Another option is a small diameter copper line between cylinders, but it is more susceptible to damage, and if it fails, the results can be very dangerous.

Pigtails using 5/16" OD copper tubing are common, cheap, and adjustable to fit between
cylinders. Would something like this work?

https://factorysupplyoutlet.com/manifold-rigid-pigtails-cga-346-3000-psig-copper-5-16-in-1-ea-ea/

--
Eric Greenwell - USA
- "A Guide to Self-launching Sailplane Operation"
https://sites.google.com/site/motorgliders/publications

Re: Oxygen Systems at Clubs

<f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26753&group=rec.aviation.soaring#26753

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a05:6214:1767:b0:456:f39:4cbb with SMTP id et7-20020a056214176700b004560f394cbbmr3870355qvb.37.1651867930711;
Fri, 06 May 2022 13:12:10 -0700 (PDT)
X-Received: by 2002:a81:98d:0:b0:2f4:cb06:19d9 with SMTP id
135-20020a81098d000000b002f4cb0619d9mr4288285ywj.203.1651867930502; Fri, 06
May 2022 13:12:10 -0700 (PDT)
Path: i2pn2.org!i2pn.org!aioe.org!news.mixmin.net!proxad.net!feeder1-2.proxad.net!209.85.160.216.MISMATCH!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Fri, 6 May 2022 13:12:10 -0700 (PDT)
In-Reply-To: <cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=207.81.151.137; posting-account=HXpYhgoAAAArQT9fDMQvA_1C5-QRLYRs
NNTP-Posting-Host: 207.81.151.137
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com> <cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: george.h...@gmail.com (George Haeh)
Injection-Date: Fri, 06 May 2022 20:12:10 +0000
Content-Type: text/plain; charset="UTF-8"
 by: George Haeh - Fri, 6 May 2022 20:12 UTC

Hi Mark,

We perforce S bended the pigtails, but some bends are more cramped than others. Please send photos of your arrangement to George dot Haeh at Gmail dot come.

Which manufacturers will make up shorter pigtails?

Re: Oxygen Systems at Clubs

<33943994-018f-47d5-8c32-f71b59e91940n@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26754&group=rec.aviation.soaring#26754

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a05:620a:454e:b0:69f:b9fd:f05d with SMTP id u14-20020a05620a454e00b0069fb9fdf05dmr3615586qkp.633.1651868752446;
Fri, 06 May 2022 13:25:52 -0700 (PDT)
X-Received: by 2002:a25:4944:0:b0:648:a796:a2 with SMTP id w65-20020a254944000000b00648a79600a2mr4043183yba.123.1651868752257;
Fri, 06 May 2022 13:25:52 -0700 (PDT)
Path: i2pn2.org!i2pn.org!paganini.bofh.team!pasdenom.info!usenet-fr.net!proxad.net!feeder1-2.proxad.net!209.85.160.216.MISMATCH!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Fri, 6 May 2022 13:25:52 -0700 (PDT)
In-Reply-To: <f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=23.128.32.100; posting-account=CT-ANQoAAABIQxC6uYerBUnoKmuMv8eC
NNTP-Posting-Host: 23.128.32.100
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com> <cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
<f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <33943994-018f-47d5-8c32-f71b59e91940n@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: markmoch...@gmail.com (Mark Mocho)
Injection-Date: Fri, 06 May 2022 20:25:52 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
 by: Mark Mocho - Fri, 6 May 2022 20:25 UTC

Eric- That's the general idea, but they have to fit the proper nipple and nut needed for a CGA-540 socket on the oxygen cylinders. The ones in your example have a 5/16 NPT fitting- relatively uncommon. Plus, they need to have a socket with the proper seat to seal correctly. And then that fitting has to mate with the CGA-540 fittings. And if you are running three cylinders, you need a couple of "T" fittings, and so on. Easiest method to get what is needed from end to end is to call Eric at Mountain High and have him set up a kit for the application. Lots easier than hunting around the internet and welding supply houses trying to source the individual items, especially for someone that is unfamiliar with the requirements of a transfill system..

I had Matheson Tri-Gas make some shorter pigtails, but if I remember correctly, it took several weeks. And that was before the panicdemic that made oxygen equipment just about unavailable. Cramer-Decker used to ship aluminum cylinders within a couple of days. They are now estimating FIFTY WEEKS!

Re: Oxygen Systems at Clubs

<eb3fe695-65db-4154-ad2e-bfc358393f77n@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26762&group=rec.aviation.soaring#26762

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a05:6214:20cc:b0:45a:fde1:5247 with SMTP id 12-20020a05621420cc00b0045afde15247mr1538525qve.113.1651930914563;
Sat, 07 May 2022 06:41:54 -0700 (PDT)
X-Received: by 2002:a25:c0d7:0:b0:64a:250:996c with SMTP id
c206-20020a25c0d7000000b0064a0250996cmr6313317ybf.512.1651930914366; Sat, 07
May 2022 06:41:54 -0700 (PDT)
Path: i2pn2.org!i2pn.org!weretis.net!feeder8.news.weretis.net!ecngs!feeder2.ecngs.de!178.20.174.213.MISMATCH!feeder1.feed.usenet.farm!feed.usenet.farm!news-out.netnews.com!news.alt.net!fdc2.netnews.com!peer03.ams1!peer.ams1.xlned.com!news.xlned.com!peer01.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Sat, 7 May 2022 06:41:54 -0700 (PDT)
In-Reply-To: <33943994-018f-47d5-8c32-f71b59e91940n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=2605:1900:80c2:8c00:f191:f70e:a196:7ed3;
posting-account=k9eOTwoAAAAjnxwXzBvqyhtKOsBIZhiE
NNTP-Posting-Host: 2605:1900:80c2:8c00:f191:f70e:a196:7ed3
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com> <cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
<f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com> <33943994-018f-47d5-8c32-f71b59e91940n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <eb3fe695-65db-4154-ad2e-bfc358393f77n@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: campbell...@gmail.com (Jay Campbell)
Injection-Date: Sat, 07 May 2022 13:41:54 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2106
 by: Jay Campbell - Sat, 7 May 2022 13:41 UTC

Western Enterprises is a good source for all of your re-fill/transfill needs, but if you are looking for schraeder-type fittings, the regular soaring supply houses have those.

Try going to http://westernenterprises.com/.

You can then select "Pigtail Generator" from the menu on the left and specify material, end fittings, and length. Once this generates a part number, you can order through your favorite welding supplier. All Western products come "cleaned for oxygen service" so no worries about the safety of their products.

Re: Oxygen Systems at Clubs

<12b129c0-fc42-4cd9-9f61-8c2f0b31e31dn@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26763&group=rec.aviation.soaring#26763

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a05:620a:4710:b0:6a0:110d:467b with SMTP id bs16-20020a05620a471000b006a0110d467bmr6374156qkb.179.1651935680707;
Sat, 07 May 2022 08:01:20 -0700 (PDT)
X-Received: by 2002:a25:d6cb:0:b0:648:e626:fc31 with SMTP id
n194-20020a25d6cb000000b00648e626fc31mr6469659ybg.350.1651935680507; Sat, 07
May 2022 08:01:20 -0700 (PDT)
Path: i2pn2.org!i2pn.org!aioe.org!feeder1.feed.usenet.farm!feed.usenet.farm!news-out.netnews.com!news.alt.net!fdc2.netnews.com!peer01.ams1!peer.ams1.xlned.com!news.xlned.com!peer01.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Sat, 7 May 2022 08:01:20 -0700 (PDT)
In-Reply-To: <eb3fe695-65db-4154-ad2e-bfc358393f77n@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=209.232.199.182; posting-account=vT3ijgkAAADV_7rM3HhqMe72L2Nrlbkj
NNTP-Posting-Host: 209.232.199.182
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com> <cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
<f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com> <33943994-018f-47d5-8c32-f71b59e91940n@googlegroups.com>
<eb3fe695-65db-4154-ad2e-bfc358393f77n@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <12b129c0-fc42-4cd9-9f61-8c2f0b31e31dn@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: handb9...@gmail.com (Richard Pfiffner)
Injection-Date: Sat, 07 May 2022 15:01:20 +0000
Content-Type: text/plain; charset="UTF-8"
X-Received-Bytes: 1694
 by: Richard Pfiffner - Sat, 7 May 2022 15:01 UTC

On Saturday, May 7, 2022 at 6:41:55 AM UTC-7, campbe...@gmail.com wrote:

Transfiller equipment.

http://www.craggyaero.com/mh_transfillers.htm

Richard
www.craggyaero.com

Re: Oxygen Systems at Clubs

<77b7900c-3f3f-4685-bf27-4a002f80f7ben@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26813&group=rec.aviation.soaring#26813

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:a05:6214:518c:b0:45a:8430:1737 with SMTP id kl12-20020a056214518c00b0045a84301737mr21324973qvb.4.1652237731461;
Tue, 10 May 2022 19:55:31 -0700 (PDT)
X-Received: by 2002:a25:b095:0:b0:649:d59e:4c07 with SMTP id
f21-20020a25b095000000b00649d59e4c07mr21270391ybj.627.1652237731262; Tue, 10
May 2022 19:55:31 -0700 (PDT)
Path: i2pn2.org!i2pn.org!weretis.net!feeder6.news.weretis.net!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Tue, 10 May 2022 19:55:31 -0700 (PDT)
In-Reply-To: <12b129c0-fc42-4cd9-9f61-8c2f0b31e31dn@googlegroups.com>
Injection-Info: google-groups.googlegroups.com; posting-host=2600:6c54:5340:1aa4:f1a8:21e5:a82a:d4c;
posting-account=igyo_woAAAAxdxQHjAB2cSS7_KQghTOv
NNTP-Posting-Host: 2600:6c54:5340:1aa4:f1a8:21e5:a82a:d4c
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com> <cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
<f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com> <33943994-018f-47d5-8c32-f71b59e91940n@googlegroups.com>
<eb3fe695-65db-4154-ad2e-bfc358393f77n@googlegroups.com> <12b129c0-fc42-4cd9-9f61-8c2f0b31e31dn@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <77b7900c-3f3f-4685-bf27-4a002f80f7ben@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: soar2mor...@yahoo.com (2G)
Injection-Date: Wed, 11 May 2022 02:55:31 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2445
 by: 2G - Wed, 11 May 2022 02:55 UTC

On Saturday, May 7, 2022 at 8:01:22 AM UTC-7, Richard Pfiffner wrote:
> On Saturday, May 7, 2022 at 6:41:55 AM UTC-7, campbe...@gmail.com wrote:
>
> Transfiller equipment.
>
> http://www.craggyaero.com/mh_transfillers.htm
>
> Richard
> www.craggyaero.com

I use this transfill adapter:
https://www.ebay.com/itm/333402663405?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=333402663405&targetid=1263433204774&device=c&mktype=&googleloc=9033822&poi=&campaignid=14859008593&mkgroupid=130497710760&rlsatarget=pla-1263433204774&abcId=9300678&merchantid=6296724&gclid=Cj0KCQjwmuiTBhDoARIsAPiv6L9Cfhkz3yIujGm9Qho5VeBsFLVCOLKg_Xfqm1RtQudi4HNIZ2qYEOoaAm7dEALw_wcB

You need to have a bleed valve because uncoupling the hose from the tank under pressure will damage the O-ring.

Tom

Re: Oxygen Systems at Clubs

<t5gq5r$q1u$1@dont-email.me>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26824&group=rec.aviation.soaring#26824

 copy link   Newsgroups: rec.aviation.soaring
Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: dcmaro...@earthlink.net (Dan Marotta)
Newsgroups: rec.aviation.soaring
Subject: Re: Oxygen Systems at Clubs
Date: Wed, 11 May 2022 11:01:44 -0600
Organization: A noiseless patient Spider
Lines: 14
Message-ID: <t5gq5r$q1u$1@dont-email.me>
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com>
<cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
<f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com>
<33943994-018f-47d5-8c32-f71b59e91940n@googlegroups.com>
<eb3fe695-65db-4154-ad2e-bfc358393f77n@googlegroups.com>
<12b129c0-fc42-4cd9-9f61-8c2f0b31e31dn@googlegroups.com>
<77b7900c-3f3f-4685-bf27-4a002f80f7ben@googlegroups.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Wed, 11 May 2022 17:01:47 -0000 (UTC)
Injection-Info: reader02.eternal-september.org; posting-host="1769265b8c14713330dfae7e1072c5bb";
logging-data="26686"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+EpPKoq3KRwHjeZCqqeVpyr26fCxNEJZo="
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
Thunderbird/91.8.1
Cancel-Lock: sha1:JHxgKu4o+UG8plyBxVDz1UeT7OU=
In-Reply-To: <77b7900c-3f3f-4685-bf27-4a002f80f7ben@googlegroups.com>
Content-Language: en-US
 by: Dan Marotta - Wed, 11 May 2022 17:01 UTC

I've been uncoupling my transfill hose for 5 years or so without a bleed
valve and had no problems with o-rings. That said, a bleed valve would
make it easier!

I think the trick to not damaging the o-ring is to release the pressure
very slowly. I loosen the hose very slightly, just until I can hear a
hiss and then let it drain completely. It doesn't take long, but
there's no big blast of O2, either.

Dan
5J

On 5/10/22 20:55, 2G wrote:
> You need to have a bleed valve because uncoupling the hose from the tank under pressure will damage the O-ring.

Re: Oxygen Systems at Clubs

<515872de-09a6-44b6-be5f-3b9140d7abd8n@googlegroups.com>

 copy mid

https://www.novabbs.com/tech/article-flat.php?id=26825&group=rec.aviation.soaring#26825

 copy link   Newsgroups: rec.aviation.soaring
X-Received: by 2002:ac8:110a:0:b0:2f1:ea84:b84 with SMTP id c10-20020ac8110a000000b002f1ea840b84mr25285705qtj.463.1652301138123;
Wed, 11 May 2022 13:32:18 -0700 (PDT)
X-Received: by 2002:a81:1409:0:b0:2f7:7423:43b with SMTP id
9-20020a811409000000b002f77423043bmr26881819ywu.401.1652301137755; Wed, 11
May 2022 13:32:17 -0700 (PDT)
Path: i2pn2.org!i2pn.org!weretis.net!feeder6.news.weretis.net!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer01.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: rec.aviation.soaring
Date: Wed, 11 May 2022 13:32:17 -0700 (PDT)
In-Reply-To: <t5gq5r$q1u$1@dont-email.me>
Injection-Info: google-groups.googlegroups.com; posting-host=74.15.4.29; posting-account=qVVpWwoAAAA_tsGW-EnD56tS-XNIlb_p
NNTP-Posting-Host: 74.15.4.29
References: <2181bc24-b39e-4bcc-a2a9-723d0cfea5a9n@googlegroups.com>
<fd858330-eae3-4fc6-a2da-a2b5f2c0d9e2n@googlegroups.com> <cc24b1f7-dc75-45c2-9fa3-c2f9f88da9e1n@googlegroups.com>
<f850d615-8320-4d36-8447-4fe6a11d6a92n@googlegroups.com> <33943994-018f-47d5-8c32-f71b59e91940n@googlegroups.com>
<eb3fe695-65db-4154-ad2e-bfc358393f77n@googlegroups.com> <12b129c0-fc42-4cd9-9f61-8c2f0b31e31dn@googlegroups.com>
<77b7900c-3f3f-4685-bf27-4a002f80f7ben@googlegroups.com> <t5gq5r$q1u$1@dont-email.me>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <515872de-09a6-44b6-be5f-3b9140d7abd8n@googlegroups.com>
Subject: Re: Oxygen Systems at Clubs
From: dan_the_...@hotmail.com (Dan Daly)
Injection-Date: Wed, 11 May 2022 20:32:18 +0000
Content-Type: text/plain; charset="UTF-8"
X-Received-Bytes: 2377
 by: Dan Daly - Wed, 11 May 2022 20:32 UTC

On Wednesday, May 11, 2022 at 1:01:50 PM UTC-4, Dan Marotta wrote:
> I've been uncoupling my transfill hose for 5 years or so without a bleed
> valve and had no problems with o-rings. That said, a bleed valve would
> make it easier!
>
> I think the trick to not damaging the o-ring is to release the pressure
> very slowly. I loosen the hose very slightly, just until I can hear a
> hiss and then let it drain completely. It doesn't take long, but
> there's no big blast of O2, either.
>
> Dan
> 5J
> On 5/10/22 20:55, 2G wrote:
> > You need to have a bleed valve because uncoupling the hose from the tank under pressure will damage the O-ring.

Lubing the O-ring helps a lot too; MH has Christo-Lube mcg111 which is oxygen-safe. Dive shops who use nitrox also probably have it too (Amazon is out of the 5g tubes right now).

1
server_pubkey.txt

rocksolid light 0.9.7
clearnet tor