⅜ Reverse Osmosis Tubing -White P/m (Food-Grade LLDPE)

⅜ Reverse Osmosis Tubing -White P/m (Food-Grade LLDPE)

Tubing & Fitting Compatibility Master Chart

Tubing Description OD (Outside) ID (Inside) Use Push-In Fitting Use Barbed Fitting
¼” RO Tubing 1/4″ ~4mm 1/4″ Push-Fit 4mm / 5mm Barb
⅜” RO Tubing 3/8″ ~6mm 3/8″ Push-Fit 6mm Barb
⅜” Brine Tubing 3/8″ 1/4″ 3/8″ Push-Fit 1/4″ (6mm) Barb
6/4mm Dosing Tube 6mm 4mm 6mm Metric 4mm Barb
8/5mm Dosing Tube 8mm 5mm 8mm Metric 5mm Barb
10/7mm Metric Tube 10mm 7mm 10mm Metric 7mm Barb
12/8mm Dosing Tube 12mm 8mm 12mm Metric 8mm Barb
½” Brine (Heavy) 1/2″ ~10mm 1/2″ Push-Fit 10mm Barb
½” Drain (PVC) ~16mm 1/2″ Not Compatible 1/2″ (13mm) Barb

💡 How to Use This Chart:

1. Are you using a “Push-In” (Quick-Connect) Fitting?

Look at the OD (Outside Diameter). The tube must match the fitting size exactly.

  • Warning: A 1/4″ (6.35mm) tube will not fit correctly into a 6mm Metric fitting. They look similar but will leak!

2. Are you using a “Barbed” (Hose-Tail) Fitting?

Look at the ID (Inside Diameter). The “hole” of the tube must stretch over the ridges of the barb.

  • Pro-Tip: If the fit is tight, dip the end of the tube in hot water for 30 seconds to soften the plastic before pushing it onto the barb.

3. Are you using a “Jaco” (Compression) Fitting?

These fittings use a nut and a small plastic sleeve (ferrule). You must match the OD of the tube to the nut size. These are most common on Brine Tanks and older RO systems.

SKU: TQDRO-W-3.8-TUBE Categories: , Tags: , Brand:

Description

  • ⅜” Reverse Osmosis Tubing (White)

    • Size: 3/8″ OD (9.52mm)

    • Material: Food-Grade LLDPE

    • Description: A high-flow alternative to standard tubing. The larger diameter significantly reduces friction loss, allowing water to travel faster over longer distances.

    • Applications: Connecting storage tanks to faucets for a faster “pour,” or feeding high-output coffee machines and fridges.

    • Benefits: Delivers up to 50% more water volume per minute than 1/4″ tubing.

  • Size: 3/8″ OD (9.5mm)

  • Description: High-flow tubing for large systems or long-distance runs.

  • Best For: High-GPD systems (400+) and connections between tanks and faucets for increased flow rate.

    Standard LLDPE semi-rigid tubing for push-fit connections.

    SKU Size (OD) Color Best Application
    1128 1/4″ (6.35mm) White Standard RO systems, fridge water lines, and undersink filters.
    1129 3/8″ (9.5mm) White High-flow systems (400GPD+), long distance runs, and commercial coffee machines.

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