Guest 1/4 M Conn

The John Guest 1/4" Male Connector is one of the most-used fittings in reverse osmosis and filtration systems, joining 1/4" tubing to a 1/4" male iron pipe thread. Its push-to-connect design makes the connection instant and tool-free, while the trusted John Guest collet grips and seals the tubing securely under pressure, delivering the kind of reliable joint that under-sink water systems are built on.

The everyday RO workhorse

From connecting tubing to filter heads and RO membranes to tapping into shutoff valves and storage tanks, the male connector shows up almost everywhere in a water treatment system. Molded from durable polypropylene, it resists corrosion and chemical exposure, and the collet design lets you release and re-seat the tubing whenever you reconfigure or service the system, which makes troubleshooting and upgrades far less frustrating.

• John Guest 1/4" tube x 1/4" MIPT male connector
• Push-to-connect collet for instant, tool-free assembly
• Connects 1/4" tubing to male-threaded ports
• Durable polypropylene resists corrosion and chemicals
• Holds securely against system pressure
• Reusable collet allows tubing removal and reconnection

Cut the tubing squarely with a proper tube cutter and push it fully into the collet until it bottoms out, then wrap the male threads with PTFE tape for a leak-free seal before threading into a female port. Confirm the tube is locked with a light tug before turning the water on. To remove the tube, press the collet ring inward and pull it free. Whether you are building a new under-sink RO system, adding a filter stage, or repairing an existing setup, this John Guest male connector is the dependable, go-to fitting for clean 1/4" tubing connections that installers reach for again and again.

Because the male connector appears so often throughout a typical RO system, keeping a handful in your kit is simply smart practice. Quick to install, easy to service, and reliably leak-resistant, this John Guest fitting is the kind of trusted everyday component that professional installers depend on for clean, dependable tubing connections. From new builds to repairs and upgrades, this John Guest male connector is the everyday tubing-to-thread fitting that keeps reverse osmosis and filtration systems connected cleanly and reliably.