1
Confirm the Part
Compare the existing component, connection type, and dimensions with the specifications above.
Capillary RO Waste-Water Flow Restrictor Insert — Fits 1/4″ OD Tubing, 420 / 550 / 650 mL — SKU FR-INSERT
$1.49
- Description
- Additional information
- Reviews (0)
Description
Internal RO drain-flow control
Control RO waste-water flow with a compact capillary insert inside 1/4″ tubing
This capillary flow restrictor pushes directly into the end of standard 1/4″ OD RO drain tubing. It helps control waste-water flow and supports the pressure conditions needed for normal reverse-osmosis membrane operation without adding a bulky external restrictor body.
420 / 550 / 650mL/min choices
1/4″ ODFits standard RO tubing
Drain lineWaste-water side only
SKU FR-INSERTRecommended new MyAquaFilter SKU
Key benefits
Designed for straightforward RO system service and replacement
50–75 GPDSuggested starting choice for many standard 50–75 GPD systems.
100 GPDSuggested starting choice for many 100 GPD RO systems.
150+ GPDSuggested starting choice for higher-output systems.
Hidden InstallFits inside the tubing end rather than using an external body.
Specifications
Product details
| Product type | Capillary waste-water flow restrictor insert |
|---|---|
| Flow-rate options | 420 / 550 / 650 mL/min |
| Suggested membrane coverage | 50–150+ GPD, depending on selected insert and system design |
| Fits | Standard 1/4″ OD RO tubing |
| Installation | Push into tubing end on waste/drain line |
| Water application | Cold-water RO systems |
| Quantity | 1 insert in selected flow rate |
| Source listed shipping dimensions | 2 × 1 × 1 in |
| Source listed shipping weight | 0.01 lb |
| Recommended new MyAquaFilter SKU | FR-INSERT |
Before ordering
- ✓Confirm the connection size and style on your existing RO system
- ✓Match tubing, thread, membrane, or flow-rating requirements before installation
- ✓Shut off water and depressurize the system before service
Installation
Verify compatibility, install carefully, and pressure-test before use
2
Install Correctly
Use the connection method appropriate for the part. Do not overtighten plastic threaded components.
3
Check the System
Restore water slowly and inspect the serviced connection for leaks, movement, or abnormal operation.
Good to know
Compatibility matters more than appearance alone
!
Check connection typeThreaded, quick-connect, stem, and capillary components are not automatically interchangeable.
!
Cold-water useUse only in compatible residential RO and water-filtration applications.
The flow-rate-to-GPD chart is a general selection guide. Actual drain flow depends on pressure, temperature, membrane design, and system configuration. Match the original restrictor whenever possible.
Not sure this is the correct replacement?Send the RO system model plus a photo of the existing part and connection.
Additional information
| Weight | 1 oz |
|---|---|
| Dimensions | 2 × 1 × 1 in |
| Choose Restrictor Size | 420 ML, 550 ML, 650 ML |
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