Plastic Flow Restrictor FR-450 for Domestic RO Water Purifiers, 4 inch(5 pic)

This Flow Restrictor Is Designed For Reverse Osmosis Systems To Restrict The Flow On The Drain Line, Keep The Membrane Pressurized And Controlling The Recovery Ratio Of The System. It Is Recommended That The Flow Restrictor Is Replaced Each Time An RO Membrane Is Replaced In Order To Keep Your System Working At Optimum Performance, As Scale Build Up Can Occur And Clog The Capillaries. Additionally, If Changing To A Different Flow-Rate Membrane Element, The Flow Restrictor Must Be Changed To The Appropriate Size As Well. ** Use Locking Clips To Keep Tubes From Loose. **