Questions and Answers for John Guest 1/4 in. O.D. x 1/4 in. MIP NPTF Polypropylene Push-to-Connect Valve Fitting

A:  Hi, The John Guest 1/4 in. O.D. x 1/4 in. MIP NPTF Polypropylene Push-to-Connect Valve Fitting has Male Iron Pipe threads or (MIP). The refrigerator supply line threads might be (compression threads). If you would call tech support at 877-700-4242 we would be happy to help you find the correct parts. (Kind regards,)

A:  Refrigerator icemaker connections are typically 1/4" in. compression threads.

A:  Hi, The John Guest 1/4 in. O.D. x 1/4 in. MIP NPTF Polypropylene Push-to-Connect Valve Fitting is not recommend John Guest fittings for hard metal or chrome plated tubes. For stainless steel and other polished metal tubes we recommend the use of Superseal fittings. You can use this fitting with Metal Tube (soft) - Brass, copper or mild steel. If you have any more questions you can call tech support at 877-700-4242. (Kind regards,)

A:  For the John Guest 1/4 in. O.D. x 1/4 in. MIP NPTF Polypropylene Push-to-Connect Valve Fitting, it is not recommended for hard metal or chrome plated tubes. For stainless steel and other polished metal tubes, we recommend the use of Super seal fittings. You can use this fitting with Metal Tube (soft) - Brass, copper or mild steel.

A:  I do not believe so. It is designed to slightly compress a plastic line in order to seal, and it does a good job—no leaking. It is also designed to release the plastic line if necessary. But copper isn’t likely to seal and may not be held in place by the gripping “teeth” of the fitting.

A:  Hello, John Guest model # 803449 is suitable for connecting to a braided stainless steel refrigerator water line but we recommend checking the thread type for compatibility. This valve has NPT threads and braided lines typically have compression threads. If you have additional questions please don't hesitate to reach out to our technical support department at 877-700-4242. Best Regards,

A:  That's what I did but it took an adaptor.

A:  The stainless water line is commonly Compression and not pipe thread. Check with the lines manufacturer to confirm thread type and size. You may need an additional adapter such as https://www.homedepot.com/p/Everbilt-1-4-in-OD-Compression-x-1-4-in-FIP-Brass-Adapter-Fitting-801189/207176825 to adapt the pipe thread to compression.

A:  Went to the store. 1/4 in. NPTF doesn't work with 1/4 in. compression fitting.

A:  No, this is for Polypropylene tubing. and also requires an adapter to connect to ice maker line.