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murph · 12-07-2007, 04:59 PM

I dont know for sure but 75psi seems a little high IMO. I have a 75 GPD unit and my supply line is at 60psi and the unit runs perfectly. Getting back to the 100 GPD the membrane that you use should be rated for a 98% rejection. I am not 100% sure about this but most 100 units have a 75 GPD membrane in order to acheive the 98% rejection rate. Maybe some one else could help clarify.

12-07-2007, 04:59 PM	#8 (permalink)
murph Tunicate Join Date: Aug 2007 Location: lake in the hills , IL Posts: 10 View Gallery Karma Komment	Re: RO/DI question I dont know for sure but 75psi seems a little high IMO. I have a 75 GPD unit and my supply line is at 60psi and the unit runs perfectly. Getting back to the 100 GPD the membrane that you use should be rated for a 98% rejection. I am not 100% sure about this but most 100 units have a 75 GPD membrane in order to acheive the 98% rejection rate. Maybe some one else could help clarify.