The AquaFX Adjustable Flow Restrictor Fitting is a crucial component for any reverse osmosis deionization system, designed to give you precise control over your waste-to-product water ratio. By allowing you to fine-tune the amount of wastewater, this fitting ensures your RO/DI unit operates at peak efficiency, producing the purest water possible for your reef aquarium while minimizing water waste.

This compact and durable fitting features standard 1/4-inch quick-connect inlets and outlets, making installation simple and seamless with most residential RO/DI systems. Its key feature is the adjustable valve, which can be easily dialed in to match your specific water pressure and system configuration, optimizing performance and extending the life of your membranes.

This adjustable flow restrictor is highly recommended for aquarists using a booster pump, as it allows you to properly balance the increased pressure for optimal filtration. It is also an invaluable tool for hobbyists with lower-than-average household water pressure, providing the necessary control to dial in the system for efficient and consistent pure water production.