500 ML Inline RO Membrane Flow Restrictor (50 GPD)

Price $11.29
Availability: In stock
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  • 1 Filter $11.29  
  • 3 Filters Price $10.99 each
  • 6 Filters Price $10.59 each
Use the 500 Milliliter Flow Restrictor with 50 GPD RO Membranes. The flow restrictor is used to create pressure throughout the reverse osmosis membrane element. The flow restrictor also maintains a desired ratio of reject flow (to drain) and permeate (product) flow. The 500 ML flow restrictor has the direction of flow and flow rate indicated on the restrictor.
Package Qty 1
Used In Brands Tier1
Manufacturer's Id PFR402Q-500
UPC 799932636653
Actual Size (in) 4 inches (Length) x 7/8 inches (Width)
Fitting Type Quick Connect
Fitting Size (inches) 1/4 inch
Color White

The TIER1-PFR402Q-500 is comparable with the following part numbers



  1. The flow restrictor should be changed every time the reverse osmosis membrane is changed
  2. Be sure that you order the flow restrictor ML size to match your reverse osmosis membrane GPD. They must match to operate at the correct efficiency. For the 500 ML flow restrictor, the RO Membrane must be 50 Gallons Per Day
  3. These are inline capillary systems that install into the drain tube itself. Just cut the 1/4-inch drain tube and push the two ends of the tube into the flow restrictor
  4. If an inline flow restrictor is already installed, remove the old inline flow restrictor and insert the new inline flow restrictor
  5. Change your filters and membrane at the recommended frequency, and clean your system with a product like Sani-System SS96RO, an easy to use, pre-measured, reverse osmosis system sanitizer

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