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Post by artc on Sept 16, 2023 12:14:12 GMT -8
Aloha everyone. Not being that familiar with Voit regulators, I have a question regarding the 50 Fathom hp seat. From the diaphragm, it appears to be very unique. Given that the 50 Fathom was only built for three years, I don't expect that hp seats are plentiful or currently available.
So, is the seat able to be polished and reused?
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Post by SeaRat on Sept 16, 2023 14:20:45 GMT -8
This is a unique downstream single stage regulator. I’ve had several, but never had to replace the seat. Is the seat leaking? If so, is it only leaking at high tank pressure? Because the spring/seat is holding back the entire tank pressure, it will leak if put on a tank with greater than 2475 psi (or maybe even a little lower). So you may not even have a problem.
John
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Post by artc on Sept 16, 2023 15:13:55 GMT -8
Hi John. No, the regulator is working perfectly. I've resisted my urge to fix perfectly good operating devices and rebuilt the Fathom 50 with out messing with the seat. I'm testing it on a steel 72 with 2000 psi. I'm just curious in case I need to deal with a hp leak in the future.
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Post by vance on Sept 16, 2023 15:39:16 GMT -8
I have had a few of these, and never had a problem with the seat. It is a needle design I think, and might prove very difficult to replace.
Can you send a photo of it? I wonder if it is something I could make?
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Post by SeaRat on Sept 16, 2023 15:40:09 GMT -8
Hi John. No, the regulator is working perfectly. I've resisted my urge to fix perfectly good operating devices and rebuilt the Fathom 50 with out messing with the seat. I'm testing it on a steel 72 with 2000 psi. I'm just curious in case I need to deal with a hp leak in the future. My experience is that this Voit 50 Fathom seat will probably last a lifetime. John |
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Post by artc on Sept 16, 2023 15:52:50 GMT -8
I have had a few of these, and never had a problem with the seat. It is a needle design I think, and might prove very difficult to replace. Can you send a photo of it? I wonder if it is something I could make? Hi Phil. I don't have one out and since it is working well, I'm not going to fiddle with it. I've only seen a diagram of the seat and it's a long stem with a Teflon head. It is connected to the push-pull levers which activate the diaphragm. |
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Post by vance on Sept 16, 2023 15:55:06 GMT -8
Yeah, but what happens when our lifetimes are over? We are nearly done. There are going to be people who want to rebuild these regs in the future. An alternative seat would be good, no?
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Post by vance on Sept 16, 2023 15:56:11 GMT -8
I have had a few of these, and never had a problem with the seat. It is a needle design I think, and might prove very difficult to replace. Can you send a photo of it? I wonder if it is something I could make? Hi Phil. I don't have one out and since it is working well, I'm not going to fiddle with it. I've only seen a diagram of the seat and it's a long stem with a teflon head. It is connected to the push-pull levers which activate the diaphragm. Ok, that's cool. I get it. |
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Post by nikeajax on Sept 16, 2023 17:31:52 GMT -8
Art, is this the valve-body?  JB |
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Post by artc on Sept 16, 2023 20:39:06 GMT -8
Art, is this the valve-body? JB Hi JB. Yup, that’s the one. |
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Post by vance on Sept 17, 2023 7:35:59 GMT -8
Mark S, do you have a photo of the poppet?
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Post by scubalawyer on Sept 18, 2023 1:34:35 GMT -8
Mark S, do you have a photo of the poppet? I have a schematic that shows a drawing of the poppet if that helps. It is just a side-view and does not show the seat itself. It has been several years (like in 2016) since I rebuilt my 50 Fathom and I can't recall whether the seat is replaceable or re-surfaceable or what. I probably took pics of the rebuild project but where those are... Hmmm...? I'll take a look in the far netherworld recesses of my m.2 hard drive and see what, if anything, I can find. M |
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Post by scubalawyer on Sept 18, 2023 2:05:46 GMT -8
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Post by vance on Sept 18, 2023 8:30:59 GMT -8
Thanks, Mark! That looks nothing like what I remember it to be. (Usual warning klaxon and spinning red light should be going off.) It reminds me of the Narghile poppets.  |
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Post by SeaRat on Sept 18, 2023 8:50:03 GMT -8
Just another note, this regulator breaths wonderfully with the large hole pointed down the intake horn. But Voit built it with the small hole pointed down the intake horn. I think that they didn't want it to out-perform their two stage, V66 Navy regulator (same internals as the USD Aquamaster).
The other comment is that this regulator, the VCR-2 50 Fathom and VCR-5 Blue 50 Fathom regulators were initially designed by Emile Gagnan.
John
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