John Guest FIPTx Tube Conn., 1/4x1/4

Connecting 1/4" tubing to a female-threaded port is a routine task in RO and filtration work, and the John Guest 1/4" x 1/4" Female Adapter (FIPT x Tube) handles it with reliable push-fit ease. One end accepts 1/4" tubing via the signature John Guest collet, while the other provides a 1/4" female iron pipe thread ready for mating with a male-threaded fitting, all in one compact, dependable component.

Quick, secure tubing connections

The push-to-connect design lets you join tubing in seconds without tools: insert the squarely cut tube into the collet, which grips and seals it automatically and holds firmly against system pressure. Built from durable polypropylene, this adapter resists the corrosion and chemical exposure common in water treatment service, and the collet design allows the tube to be released and re-seated as the system is reconfigured or serviced.

• John Guest 1/4" tube x 1/4" FIPT female adapter
• Push-to-connect collet for fast, tool-free tube connections
• Provides a 1/4" female threaded port
• Durable polypropylene construction for water systems
• Holds securely against system pressure
• Reusable design allows tubing removal and reconnection

For a dependable seal, cut the tubing end squarely and push it fully home into the collet until it bottoms out, then thread a male fitting into the FIPT end using PTFE tape to seal the threads. Confirm the tube is locked with a gentle pull before pressurizing, and press the collet ring to release the tube whenever you need to service the line. This versatile female adapter is a staple of under-sink RO systems, filter manifolds, and general water treatment plumbing, giving installers a clean, leak-resistant way to transition from flexible tubing to a threaded connection quickly and confidently.

For technicians assembling or servicing RO systems, keeping a stock of these female adapters means you are always ready to tie tubing into a threaded port without improvising. Trusted, durable, and quick to connect, this John Guest fitting is a dependable everyday component in well-built reverse osmosis and filtration plumbing. From a single household RO install to a full commercial system, this John Guest female adapter delivers the same quick, leak-resistant tubing-to-thread transition that professionals trust throughout water treatment plumbing.