O-Ring Sizes

[JVM4.0]

If you please.........

Can anyone help me with the O-ring sizes I'll need for the Conshelf SE2 2nds? I got the Aqualung Part Numbers from their spare parts catalog, but the descriptions aren't very good. Part Numbers are listed below:

820014
357025
820010

I'll be using Viton O-rings for the rebuild. I'm going to attempt to purchase all I need from a local supply store (non-SCUBA). I don't believe I'll need anything else as far as parts go. Everything seemed to be working well in the pool last week. BUT, if I find I need some additional parts, like a LP seat, exhaust valve or diaphragm, who should I call?

Thanks!

 

[Jimmer]

Well if they run their parts #'s like Zeagle or Oceanic, then the rings you need are the last 3 numbers in the part #. So the first one would be an 014 ring, the second an 025 the third an 010.

 

[JVM4.0]

Need some help if you please.........

Can anyone help me with the O-ring sizes I'll need for Conshelf SE2 2nds? I got the Aqualung Part Numbers from their spare parts catalog, but the descriptions aren't so good. Part Numbers are listed below:

820014 goes between the inlet port and the box bottom

820010 goes on the hose end that attaches to the inlet port

957025 goes between the port plug and the box bottom, another goes on the hose end that goes in the first stage.

Jimmer was kind enough to help with a suggestion. I don't have a problem with the -014 and the -010 sizes, but the -025............I don't think so. It's like 1 3/16".

Also..........if I find I need some additional parts, like a LP seat, exhaust valve or diaphragm, who can I call?

Thanks!

 

[Jimmer]

Have you removed the old O rings from the reg and checked them out?

 

[JVM4.0]

Since this is my first rebuild project and I don't want to take them out until I have everything lined up, or I absolutely HAVE to.

My LDS and I have had some "discussions" about overhauling my own equipment (OK, he ain't for it at all, and said he would never dive with me if I rebuilt them myself!), and is the only source of parts around here (small town Iowa). So, since I don't have any good resources locally for parts, I don't want to mess this up.

I can buy viton O rings and Christolube online, but can't seem to find rebuild/overhaul kits with all the "proper" parts online.

 

[Jimmer]

Well unfortunetly Aqualung doesn't allow service kits to be sold online, so that's probably why you can't find one. I was going to say if you removed the O ring you could size it on an O ring chart and then you'd know what it was.

 

[DA Aquamaster]

Just curious - why viton o-rings?

O2 cleaning a reg with a great big diaphragm in it is fine but using viton o-rings is then kind of like refusing to store oil in the garage for safety reasons after deciding that storing gas there is ok.

EPDM and nitrile o-rings both wear better, especially in dynamic applications. first stage diaphragms all seem to be pretty generic and I think you can get them through Trident - but again Trident does not sell directly to divers, just dealers.

I understand dealer reluctance to turn everyone loose with their own servicing from both a service/liability standpint and a revenue standpoint. On th other hand, training a diver to service his or her model of regs and then letting them do it in the shop with parts bought from the shop has some merit to it. The LDS makes money off the training, still makes money off the parts, retains a loyal customer, ensures the customer buys regs from the LDS, not online, and creates a potential source of part time techs to draw from down the road.

There is a shop in this area that runs a reg repair course as well as an O2 technician and tank inspection course. They make a lot up front on the training, and then I suspect make some money on supplies, but most importantly they make money on gas, equipment, trips and all the other stuff that the resulting loyal customers end up spending with the money they "save" on reg repair, tank cleaning, and VIP's. It's not a bad idea, even in Iowa.

 

[Couv]

There he goes again trying to bring logic into the thread.

 

[JVM4.0]

AquaMaster brought up some VERY interesting and valid points. Ones that I have been attempting to take advantage of, actually.

About a year ago, this particular LDS had the foresight to offer an equipment course. First time in this area. Turns out I was the only one who signed up for it. And the other point about being able to do "field repairs" when the LDS isn't around is valid as well. That is the whole rationale I am using with the LDS in question, and he is accepting of that up to a point. I told him I'm not interested in overhauling my regs to beat him out of a couple of bucks. Not worth that. After I do the overhaul, I'd want him to double check everything he can, and "tune" them (he's good at that).

I am VERY interested in learning how they work, common faults, and other "easy" fixes that would allow me to dive with a simple adjustment or disassembly, clean and reassembly.

What next?

 

[Couv]

I am VERY interested in learning how they work, common faults, and other "easy" fixes that would allow me to dive with a simple adjustment or disassembly, clean and reassembly.

What next?

The first NEXT is to know that there are plenty of regulator gurus on this board. It's helpful to pick out a few of them and read lots of their post and you will be off to a very good start. In the regulator section I can highly recommend the post of (in no particular order) Awap, DA Aquamaster, Captain, Pescador775 and Luis H …there are lots of others but that will keep you busy for a while.


The next NEXT is to buy a copy of "Regulator Savvy" by Peter Wolfinger and "Scuba Regulator Maintenance and Repair" from Vance Harlow (our very own Oxyhacker.) If you are going to get just one book keep in mind the approach of each is a bit different in that one is written for the DIY person (Vance's) and the other is for the shop tech. However, for less than $100 having both is (or is it are?...help me out Mattboy) a worthwhile investment not to mention an enjoyable read.

The next, Next, is to download copies of assorted regulator manuals and illustrated parts diagrams from Frogkick or Regulator manuals and start tearing into a few old regulators you get from eBay, Craig's list etc. (or your buddy that you "borrow for the weekend") It is very unlikely that you will destroy a regulator to a point where it can not be rebuilt. Just make sure you use the correct parts, tools and technique (remember safety when working with compressed air) and before you know it you'll be overhauling and tuning your regulator for maximum performance.

Eschew the admonitions of the "BUT IT'S LIFE SUPPORT" crowd and come to the Dark Side! Join us in the DIY forum... throw away your useless warrantee that requires you to bring your regulator in each year to supplement your LDS.



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