Twin Set Considerations/ Manifold

[rjack321]

ya but what if i need twin 80s or 100s. Just saying i stumbled upon some hardware and i'm interested

What do you have? The tanks, manifold, and bands have to be matched for one another

 

[rhwestfall]

So where can I buy one? Exclusive military stuff does not count, I can't buy their O2 rebreathers either.

Well Marine Diver (WMD). Also, doesn't XS Scuba have one. Stupid price IIRC...

 

[Gareth J]

As @rjack321 says.

The manifold needs to match the valves, and they relate to the bands. Otherwise the whole system is under strain, or won't screw together.

The cylinders need to be the same size, not just volume, but heights, diameters, cylinder threads, etc.

It is often cheaper to start from scratch, or pick up a second hand set.

 

[Akimbo]

You can find them used on Ebay. Search: vintage double tank manifold

Check the spacing to make sure it matches your bands or be prepared to make or modify them.

 

[rx7diver]

As The manifold needs to match the valves, and they relate to the bands. Otherwise the whole system is under strain, or won't screw together.

Yes, here is a pic of the hardware for my OMS 46 doubles. The OMS manifold that's pictured is for 7.25" cylinders and matches some OMS bands that are not pictured. Switch out the center section with the straight piece, and you have a narrower (non-isolating) manifold that fits the OMS bands that are pictured on the 46's. Slick!

I promised myself that if I ever found a serviceable U.S. Divers single-outlet manifold, I would simply have someone build me some bands for my 46's to use with it when diving my DA Aqua Master. The downside is, the 46's would necessarily need to be spread further apart than optimal. The upside is, I would have more options--for double 46's or 50's, for double old-school Steel 72's, for double Al 63's, etc.

rx7diver

 

[Swedinsidemount]

Yes, I own an OMS (Faber) LP 126. It's a very long tank and has an 8" OD.

I also own a pair of OMS (Faber) LP 46's and the hardware (including a two-outlet OMS manifold) to dive them as doubles. The little doubles balance much nicer (for me) than the 126. They are a bit short for me, though. Probably, LP 50's would work better. And, with a custom single-outlet, solid bar manifold, they (the 46's or the 50's) would probably make excellent doubles to use with my DA Aqua Master that's been improved by Vintage Double Hose.

rx7diver

Yes that would be exactly what i'd want. Not so sure if my bc can handle single 130 but it can easily adapt for twinset. But the recurring problem is where to find a manifold

 

[rjack321]

Yes, here is a pic of the hardware for my OMS 46 doubles. The OMS manifold that's pictured is for 7.25" cylinders and matches some OMS bands that are not pictured. Switch out the center section with the straight piece, and you have a narrower (non-isolating) manifold that fits the OMS bands that are pictured on the 46's. Slick!

I promised myself that if I ever found a serviceable U.S. Divers single-outlet manifold, I would simply have someone build me some bands for my 46's to use with it when diving my DA Aqua Master. The downside is, the 46's would necessarily need to be spread further apart than optimal. The upside is, I would have more options--for double 46's or 50's, for double old-school Steel 72's, for double Al 63's, etc.

rx7diver

View attachment 622729

That is a double outlet manifold though. Lp45s, even overfilled are smaller than a hp130. So you plug one outlet with a DIN plug and put your single regulator on the other and end up with wonky hose routing, less gas, more failure points, and no redundancy. You might as well dive a single 130 or use a single 80 backmount and sling a second tank as a bottom stage.

Unless you have a vintage double hose regulator and are going that route, what does a single outlet manifold accomplish - basically nothing.

 

[Swedinsidemount]

That is a double outlet manifold though. Lp45s, even overfilled are smaller than a hp130. So you plug one outlet with a DIN plug and put your single regulator on the other and end up with wonky hose routing, less gas, more failure points, and no redundancy. You might as well dive a single 130 or use a single 80 backmount and sling a second tank as a bottom stage.

Unless you have a vintage double hose regulator and are going that route, what does a single outlet manifold accomplish - basically nothing.

Ya then maybe a single is better, what's the biggest single you've seen? I know i can get a single 130 faber for like $400, but you know sometimes bigger is better.

 

[rx7diver]

Well Marine Diver (WMD). Also, doesn't XS Scuba have one. Stupid price IIRC...

Unfortunately, the XS Scuba single outlet manifold seems to be no longer available: XS Scuba Thermo PVD One-Piece Reserve J Manifold.

rx7diver

 

[Swedinsidemount]

Unfortunately, the XS Scuba single outlet manifold seems to be no longer available: XS Scuba Thermo PVD One-Piece Reserve J Manifold.

rx7diver

yeh i saw that one, also located the YMW one which really intrigued me but i guess you have to call to put in a special order.