Flow restrictors are essential to a properly functioning RO system. Be sure to have the appropriate flow restrictor for the membrane you have. If you decide to change your membrane to a higher or lower GPD membrane, you must also replace the flow restrictor to correspond with the membrane.
75 GPD Flow Restrictor for 75 GPD Membrane
100 GPD Flow Restrictor for 100 GPD Membrane
150 GPD Inline Flow Restrictor for 150 GPD Membrane