OK, slight delay in reply.. have been very busy with other projects and now back to this one.
It appears that the S30 hose is an American designation and not carried in Australia
according to the Parker distributor.
They instead told me that they recommend 520N hose (nylon lining, kevlar (!) reinforcement) and this is what they use for RO on boats (really suprized that they even knew of watermakers!)
..now the best part is.. the price
6m of 1/2" hose + fittings... $1301.96!!! Ouch! There is another Enzed franchise I called as well and he mentioned something along the lines of $90/m + $200 for both fittings, which will be cheaper, but still.. ouch!
On another note - I have an HCTI membrane vessel - but in my ignorance, I didn't specify anything specific when ordering, so I received two sets of end caps marked 2551S and 2552S.
Both end cap models have permeate holes. But only the 2552S has a through-hole for the saltwater in/out. Since I will be connecting two vessels in series, I should have ordered 4 x 2552S caps. :\
Having said this, the 2551S has a 1/4" NPT hole drilled/tapped from the OUTSIDE of the cap, right in the middle, but it doesn't go all the way through... can I just take a drill and drill it the rest of the way and save $131?
One last question - when fitting the threaded fittings into the end caps (saltwater/hp), can I use plumbers/teflon tape or is there a magic high-pressure sealant
that I need to use?
Thanks muchly in advance!