ds4 vs us4? - Tech input please

[WetDane]

Ok, I know this is getting nitpicky - but I am looking for pro's con's between the ds4 and the us4? One is sealed and one is not - correct?
Use will be on doubles - I plan to retire my mk20's to stages, I'm keeping my G250's though for now.

Doubles, Puget sound primarily, deep and trimix.

Any comments - I'm especially looking for tekkies input on this.


Thanks,
Big T

 

[Lost Yooper]

WD,

Most technical divers seem to prefer the DS4. They seem to last forever. I thought when I bought my TX100 that it was a DS4 first, but it has the 1/2" port.

Anyway, the nice thing with mix is you can tune it down to 120-130psi and still have nice breather.

Mike

 

[large_diver]

WD -- try this link....not comprehensive data, but useful when doing a quick comparison on Apeks first stages.

http://www.divesource.com/apeks/firststages.htm

 

[TexasMike]

WD,

Be sure to check with TekDiver (Marc Thompson) on this question. I know from personal experience that he is very up to speed on the regs that you are asking about.

--Mike