RFC: second stage seats substitutes

[Zung]

If you have one (Apeks), take it out and measure it. There's a possibility that the Trident A148 works: it's .26" tall and .27" wide at the base (the crown).

 

[Zung]

On a couple of AIR 2 units I rebuilt, I was considering that a thicker seat would be of some benefit as the lever adjust nut was on the very last poppet thread....

... it seems that the next thickness is 50% thicker at 3/32" ....I bet that would do nicely in cases where one is running out of poppet threads...

That's a good one, Bro, thanks. It's in between the Trident AA88 and the A149, and it should be a close match for the Aqualung stuff that have a cavity of 2 mm deep.

So the relevant specs are:

McMASTER #: 8985K135
Material: EPDM Rubber
Durometer Rating: 80A
Thickness: 3/32" / .094" / 2.38 mm
Width: 2"
Length: 36"
Price: $5.57

 

[Zung]

Here's some Sherwood stuff, thanks to couv and herman for the input.

[table 0 0 0 0]Model.............|Part #............|3rd Party...|3rd Part #...|Home Made..|Type.|
SR3108|978-9BN|Trident|AA88/A119|awap|Puck|
SR3209|978-9BN|Trident|AA88/A119|awap|Puck|
SR3280|978-9BN|Trident|AA88/A119|awap|Puck|
SRB0050|978-9B|Trident|AA88/A119|awap|Puck|
SRB2100|978-9BN|Trident|AA88/A119|awap|Puck|
SRB3602|978-9BN|Trident|AA88/A119|awap|Puck|
SRB3700|978-9S|Trident|AA88/A119|awap|Puck|
SRB3900|978-9S|Trident|AA88/A119|awap|Puck|
SRB5100|978-9BN|Trident|AA88/A119|awap|Puck|
SRB5300|978-9BN|Trident|AA88/A119|awap|Puck|
SRB5700|978-9BN|Trident|AA88/A119|awap|Puck|
SRB5900|978-9BN|Trident|AA88/A119|awap|Puck|[/table]

 

[Zung]

I suppose there is no sub for an APEKS second stage seat..

There is: someone reported here that the Atomic and the Apeks seats are interchangeable.

But the cost and the availability could be worse.

 

[LeadTurn_SD]

I suppose there is no sub for an APEKS second stage seat..

Not exactly what you are looking for (a generic substitute), but at least Apeks service kits are available online (but a tad pricey):

buy Apeks Second Stage Rebuild Kit at northeastscubasupply.com - Regulators - Regulator Service Kits - Apeks Regulator Service Kits - Apeks Second Stage Rebuild Kit - Northeast Scuba Supply

I've seen other online stores sell them as well, but do not have the links

Best wishes.

 

[redacted]

Not exactly what you are looking for (a generic substitute), but at least Apeks service kits are available online (but a tad pricey):

buy Apeks Second Stage Rebuild Kit at northeastscubasupply.com - Regulators - Regulator Service Kits - Apeks Regulator Service Kits - Apeks Second Stage Rebuild Kit - Northeast Scuba Supply

I've seen other online stores sell them as well, but do not have the links

Best wishes.

Has anybody tried a Scubapro or trident seat in the Apeks? It sure looks like a rivet style seat. If not, I may have to go visit my friendly Aqualung dealer and take a look.

 

[Randy43068]

True, they are. I just bought some for all my regs. I paid 23 bucks for a second stage kits which is nothing but a few Orings, and a seat.

The first stage kit is 35 bucks.. it's got a few more parts, but not that 35 dollars worth. Then again, it must be worth 35 bucks, because I'm paying it! Price is what the market will bear isn't it? :shocked2:

If I didn't like the APEKS so much, I'd dump 'em for HOG regulators. But all of them are the same which makes rebuild easier. I can do it in kind of a production line fashon and get all of 'em done pretty fast. I do 8 second stages and 7 first stages, I think.

Not exactly what you are looking for (a generic substitute), but at least Apeks service kits are available online (but a tad pricey):

buy Apeks Second Stage Rebuild Kit at northeastscubasupply.com - Regulators - Regulator Service Kits - Apeks Regulator Service Kits - Apeks Second Stage Rebuild Kit - Northeast Scuba Supply

I've seen other online stores sell them as well, but do not have the links

Best wishes.

 

[Randy43068]

Has anybody tried a Scubapro or trident seat in the Apeks? It sure looks like a rivet style seat. If not, I may have to go visit my friendly Aqualung dealer and take a look.

A friend of mine said the Dive Rite seats (first stage) will work in Apeks firsts. I haven't taken a look yet to confirm that, however.

 

[redacted]

A friend of mine said the Dive Rite seats (first stage) will work in Apeks firsts. I haven't taken a look yet to confirm that, however.

I would not be surprised to find that those "rivet style" seats work in all balanced barrel poppet design 2nds.

 

[Zung]

It'd be nice to have some kind of proof to this. Randy, do you have a caliper? Or can you send one of your used seats to someone who has?

We need the big diameter, the small diameter, the thickness of the crown, and the overall length.