1/4″ OD Tubing Union (Quick-Connect) Fitting

This 1/4″ OD tubing union fitting is designed to connect two pieces of 1/4″ outside-diameter (OD) tubing
in a straight inline connection. It is ideal for extending tubing length, repairing a cut line, or creating a clean,
serviceable connection in countertop RO systems, undersink RO systems, and inline filtration setups.

Purpose

• Connects two 1/4″ OD tubes together (tube-to-tube connection)
• Perfect for extending tubing runs or repairing tubing
• Straight inline design for clean routing

Applications

• Countertop reverse osmosis (RO) systems
• Undersink RO systems
• Inline post-filters and accessories
• Ice maker / refrigerator water lines
• Water dispensers and filtration tubing repairs

Key Features

• Tube Size: 1/4″ OD to 1/4″ OD
• Type: Straight union (inline)
• Installation: Push-to-connect (tool-free)
• Compatibility: Works with standard 1/4″ OD RO tubing

Installation Notes

• Cut tubing cleanly at a 90° angle for best sealing performance.
• Push each tube fully into the union until it seats completely.
• To remove tubing, press the collet ring and pull the tube out.
• Use with cold water only.

Specifications

• Connection: 1/4″ OD tubing × 1/4″ OD tubing
• Style: Straight union
• Quantity: 1

Package Includes

•  1/4″ OD Quick-Connect Union Fittings

Also known as: inline union, tube-to-tube connector, push-to-connect union, straight coupler.