D420! How about that?

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I didn't dis-assemble anything on the 420 (combination of no documentation, not mine to tear apart, and it cost you more than I have total invested in the rest of what I wore in the pool!), so I'm not clear on the T attachment. I already boxed it, but as I recall, it looked like tabs, or flaps. If you mean for the C370, I've never seen one in person. Depending on the attachement method, it may be pretty easy to re T them. I'm actually planning on doing T's for my old Conshelfs with the screw on T's.
Not a big deal, just something to think about on the T, I think it’s just tabs and a cross pin.
 
The exhaust tee is indeed just a pin and tab arrangement, and could be replaced by a wider model if SP chose to make one.
IMG_20200327_091631.jpg

IMG_20200327_091821.jpg
 
The exhaust tee is indeed just a pin and tab arrangement, and could be replaced by a wider model if SP chose to make one.
View attachment 576714
View attachment 576715
Figures... lol
Maybe down the road (when I catch up on a few other projects) I'll see about borrowing one again and re-T'ing it. In the mean time, I may do some rough sketches.
 
Figures... lol
Maybe down the road (when I catch up on a few other projects) I'll see about borrowing one again and re-T'ing it. In the mean time, I may do some rough sketches.
You have one in hand, go for it.
 
Figures... lol
Maybe down the road (when I catch up on a few other projects) I'll see about borrowing one again and re-T'ing it. In the mean time, I may do some rough sketches.
Yeah, that could be a cool 3D printing project...
 
If Rob figures out what was up with mine, if they do in fact prove themselves to be consistent and reliable, if SP does come out with a wide exhaust T option I'd be interested again. A lot of "ifs" though.
 
Hi I also bought the new D420, I opened it to inspect it, I noticed that the lever (37) is above the case (15), about 1 mm, touching the diaphragm (38), I read in your comments , that it is better that the lever (37) must be 1/2 mm inside the case (15), so my question to lower the lever (37) what should I do, unscrew the screw (16), or unscrew the nut (24)? thanks .
 
DH in Curacao. :thumb:

I use MK2 for for pony/deco, a collection of SP MK-3,5,10 and 15 pistons I rarely use (collected over the years, either gifted, or with seconds I was after), and wife & daughter use M20/G250 for warm water travel. With the exception of my Poseidon rig, all my other stuff is diaphragm (MK-17, HOG & Deep6). Not a piston fan, and wouldn't buy any more..

YMMV

Maybee i missunderstand you, but have Poseidon ever made any piston regulators?
 

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