43 seems pretty low to me, for that matter I think even 55 seems low. Do you have a pressure regulator on your house? I have one on mine that dials it down to 50psi so I tapped my RO/DI to just before the regulator and it runs from anywhere from 76 to 90 nowadays (much much better performance).
Over a 50' length I think I'd want to go minimum 3/8" line.
Neat idea though. Would be interested to hear the results.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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