Reverse Osmosis Fittings

1/4 Inch Outer Diameter-durable Plastic RO Water Filter Fittings

1/4" Quick Connect Fittings, Elbow, Y, Straight, and Tee unions designed for leak-free reverse osmosis (RO) systems, water purifiers

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Brand: Aqua Store4 options

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About this product

Ensure a secure, leak-proof connection in your liquid filtration systems with our premium food-grade Reverse Osmosis Quick Connect Fittings. Manufactured from high-quality, BPA-free polypropylene, these push-to-connect adapters utilize advanced collet technology to grip tubing firmly without the need for tools, locking clips, or messy sealants. This versatile pack provides all essential shapes to easily reroute, split, or extend your 1/4-inch OD polyethylene, nylon, or polyurethane tubing. Perfect for under-sink RO systems, water purifiers, aquariums, and refrigerator ice makers.

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A better fit, used the right way

Check where this product works best and follow the recommended usage guidance.

Best match

Suitable for

Freshwater
RO Systems

Quick guide

How to use it

Follow these step-by-step instructions to ensure a permanent, leak-proof seal:

Cut the tubing: Use a dedicated tube cutter to slice the 1/4" hose square and clean.
Remove blue clips: Pull the blue locking collet clip off the fitting port if pre-installed.
Insert the tube: Push the tubing firmly into the fitting until it bottoms out completely (approx. 1/2 inch deep).
Secure the lock: Slide the blue locking clip back behind the collet collar to lock the mechanism.
Test the connection: Tug gently on the tubing to confirm it is securely locked in place before turning on the water supply.