D420! How about that?

[lexvil]

It

Can anyone tell if the MK19 has a fifth port?

seems so.

 

[axxel57]

My MK19 has five ports, and I guess also the new MK19 will have the five LP ports......

 

[rsingler]

My MK19 has five ports

There's always someone making us feel badly about what we don't have...

 

[axxel57]

There's always someone making us feel badly about what we don't have...

I was sure you wrote once in a post that you have a MK19.......
My one is never used, so if Simon has no luck, you can came back to me.
But if I would be you, I would wait a couple of weeks for the new MK19, which is, as I understand it, supposed to be on the market any time now.
My hope would be that SP maybe found technically a way to provide the new MK19 also with a 'preferred port', which was not possible with the old design......

 

[rsingler]

preferred port

??
High flow?

 

[Diver below 83]

Why mk19>25evo?

 

[rhwestfall]

Environmentally sealed diaphragm vs. piston.

 

[rsingler]

Why mk19>25evo?

As @rhwestfall says, Environmentally Sealed.
Lots of fine grit/trash where I shore dive, that gets stuck in the crack where the piston head meets the land, and slowly chews up the reg head, despite good washout. It's slow, and minor. But I'm finicky about making my best gear last 30 years.
For my old rant on this subject, see
Piston or diaphragm
I'm a piston guy, but when Scubapro stopped SPEC environmental sealing, I went to Atomic for my pistons.
The Mk17 is a fine diaphragm reg (though not as good as the XStream). But neither have a turret. The Mk19 does...

 

[rhwestfall]

I grew up on pistons in cold water. The higher performing they got, the more problems I saw. For me, it is diaphragms for our cold water.

YMMV

 

[Couv]

Can anyone tell if the MK19 has a fifth port?

Yes, if I'm reading the diagram correctly there is a 5th port on the end cap of the turret.