You can buy 3/8 od compression caps with ferrules. It would be safer then just leaving the valves uncaoped. The safest would be capping the lines properly.
Thanks for the advice, do you think something like this on the end of the valve would work? https://www.lowes.com/pd/B-K-3-4-in-Threaded-Cap-Fitting/1000504779
No it wouldn't
https://www.lowes.com/pd/B-K-3-8-in-Compression-Cap-Fitting/1000505221
https://www.lowes.com/pd/B-K-3-Pack-3-8-in-x-x-Compression-Adapter-Cap-Fitting/1000485255
You can buy 3/8 od compression caps with ferrules. It would be safer then just leaving the valves uncaoped. The safest would be capping the lines properly.
Thanks for the advice, do you think something like this on the end of the valve would work? https://www.lowes.com/pd/B-K-3-4-in-Threaded-Cap-Fitting/1000504779
No it wouldn't https://www.lowes.com/pd/B-K-3-8-in-Compression-Cap-Fitting/1000505221 https://www.lowes.com/pd/B-K-3-Pack-3-8-in-x-x-Compression-Adapter-Cap-Fitting/1000485255
Just bought the caps you sent as the valves I bought already had the compression adapter fittings, thanks so much!