RO flow restrictor for Home RO System 420 ml for 40-50 GPD RO Membranes
Model PFR-420Q
Flow restrictors in RO (Reverse Osmosis) systems control the flow rate of wastewater leaving the membrane.
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Creates pressure: They slow down the flow of wastewater, which builds up pressure inside the RO membrane housing.
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Helps filtration: That pressure forces water through the RO membrane, improving filtration.
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Prevents waste: Without a flow restrictor, water would rush out too fast, reducing efficiency and wasting filtered water.
So basically, they balance the system to ensure clean water gets properly filtered without wasting too much.
Most common flow restrictors to pair with your RO Membrane
Example Sizes and Flow Rates:
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200 mL/min, 1/4″ quick connect – for 18–24 GPD RO systems
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300 mL/min, 1/4″ quick connect – for 25–35 GPD RO systems
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350 mL/min, 1/4″ quick connect – for 35–50 GPD RO systems
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420 mL/min, 1/4″ quick connect – for 40–50 GPD RO systems
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550 mL/min, 1/4″ quick connect – for 50–80 GPD RO systems
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800 mL/min, 1/4″ quick connect – for 80–150 GPD RO systems
