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A Flow Restrictor 450 in a reverse osmosis (RO) system is typically used to maintain proper flow rates through the RO membrane. The "450" refers to the flow rate capacity, usually measured in milliliters per minute. In this case, the 450 mL/min flow restrictor is suited for RO membranes with a capacity of around 75 to 100 GPD (gallons per day).A Flow Restrictor 450 is a key component in a reverse osmosis (RO) water filtration system, regulating the flow of water through the RO membrane. It maintains a flow rate of 450 mL/min, which is ideal for membranes with a capacity of 75 to 100 gallons per day (GPD). The flow restrictor creates necessary back pressure on the membrane, ensuring optimal filtration efficiency. Without it, water would pass too quickly through the membrane, reducing the quality of purified water and increasing wastewater. Proper use of a flow restrictor improves the membrane's lifespan, balances pure water output, and reduces excessive water waste, ensuring effective filtration performance in RO systems.