Parker 1/4" Union Connector

Need to join two runs of 1/4" tubing in a straight line? The Parker 1/4" Union Connector does exactly that, splicing tube to tube with a secure push-to-connect grip on each end. Built by Parker Hannifin from tough POM polymer, this small but essential fitting weighs only 0.01 lbs yet provides a dependable, watertight junction for residential and light-commercial water systems. It is the kind of unassuming part that keeps a filtration setup running smoothly for years.

• Tube x tube straight union for inline connections
• POM polymer construction for corrosion and chemical resistance
• Size: 1/4" x 1/4" inch on both ports
• Push-to-connect collets grip the tube without tools
• Ideal for extending or repairing existing 1/4" lines
• Reusable design simplifies future modifications

Union connectors are among the most-used components in any quick-connect plumbing kit. They let you lengthen a tubing run, repair a damaged section, or transition between two fixtures without cutting into permanent fittings. Inside reverse-osmosis systems, refrigerator water lines, ice-maker feeds, and small filtration loops, a clean inline splice keeps flow smooth and pressure steady. Because the body is molded from acetal polymer, it shrugs off the corrosion that would eventually plague a metal coupling in a damp under-sink environment.

Installation is straightforward: trim each tube end square, clear any burrs, and press the tubing firmly into both sides until it seats against the internal seal. The collet automatically locks the tube in place, and a gentle pull confirms the joint is holding under pressure. When you need to take the line apart, depress the release ring and the tube slides out cleanly, leaving the fitting ready to reuse on the next job. The Parker name assures consistent tolerances and long service life, making this union connector a smart staple to keep stocked in any installer's or DIYer's water-treatment parts bin.

For dependable performance, always use tubing that matches the fitting's nominal size and is rated for your line pressure and water temperature. Pairing this union connector with quality 1/4" tubing yields a connection you can trust under continuous household use, with no special skills or plumbing experience required to achieve a professional, leak-free result.