Retro vs X valves

[maglover728]

What are the differances between a Retro Valve and an X valve? I see Retros sell for $150 while the Xs move for $200+.

[MANN]

They are the same internally/how they work. Retro is half ss half alum while xvalve are all alum. Retro cannot accept a ult while the Xvalve can.

[DaFin]

And where do E's fall in?

[DaFin]

Professor Rogue, how can one tell which can accept a ULT and which can not?

Read: I want to get another valve and I don't care about weight just functionality.

[maglover728]

I tought that it had to do with the configuration of the o-rings at the top of the on/off...

[gus13]

see this thread, might make life easier
http://automags.org/forums/showthread.php?t=96538

[maglover728]

Cool, thanks everyone.