How to Replace Saddle Valve with Shut-off Valve on Fridge Line?

[Downaski]

Hi all,
How do you properly replace an old saddle valve on a refrigerator water line with a standard shut-off valve, and is it necessary to shut off the main water supply first?
Thank you in advance!

[TinyTool]

Hi there,

When replacing an old saddle valve with a proper shut-off valve on a refrigerator water line, the water supply needs to be shut off first to avoid leaks during the process. If the saddle valve is connected to a nearby shut-off valve, that can be used. However, in many cases, saddle valves are tapped directly into a main water line without a dedicated shut-off, which means the main water supply to the house must be turned off.

After shutting off the water, the saddle valve can be removed entirely. This will leave a small hole where the saddle valve pierced through the pipe. For copper pipes, it is common practice to cut out the damaged section and install a new compression or push-to-connect tee fitting, followed by a standard quarter-turn shut-off valve for the refrigerator line. In cases where flexible plastic or PEX lines are involved, push-fit fittings are often used to simplify the installation.

All connections should be checked to ensure they are tight and leak-free before turning the water back on. In cases where there is uncertainty or discomfort with handling plumbing repairs, it is advisable to hire a professional to ensure the job is done safely and correctly.

Hope this helps!

[Downaski]

Does the replacement process differ much if the main water line is PEX instead of copper?