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Piping Help

taylorgeo
taylorgeo Member Posts: 74
in THE MAIN WALL
I want to clean up the piping and replace the valves under my kitchen sink before I install the new sink and faucet with PEX supply lines.

How do I replace the valves and get rid of all the piping ABOVE the new valves? And will the new PEX supply lines coming out of the faucet fit right into the new valves?


Comments

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,212
    Remove the valves and replace with this:
    https://www.supplyhouse.com/Sioux-Chief-133-G2F1C04-1-2-Female-IPS-x-3-8-OD-Compression-Straight-Stop-Valve-LF890013-No-Lead-Chrome

    But I like those old valves that you have and if they still work, I would keep them. These new valves are garbage. If you decide to keep them, all you'll need is this adapter to screw into the valve:
    https://www.homedepot.com/p/Everbilt-3-8-in-Compression-x-1-2-in-MIP-Brass-Adapter-Fitting-2-Pack-800769/207176557
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • mattmia2
    mattmia2 Member Posts: 10,854
    You could rebuild the old valves with a new washer and some string packing if they don't work. instead of replacing them too.

    Be sure to use 2 wrenches and seat the back of the wrench against the pipe so you don't crush it.
  • taylorgeo
    taylorgeo Member Posts: 74
    edited March 2022
    Yeah, the valves are broken. I like these options you all are suggesting, thank you.

    How do I remove the pipe ABOVE the valve?
  • jhewings
    jhewings Member Posts: 139
    edited March 2022
    Above the valve consider the braided silver flex lines from the home center (assuming you are not in a high rise). There are different sizes. Most modern kitchen sink faucets and angle valves need 3/8" at both ends but you might need 1/2" at either end depending on what's there. You probably need a basin wrench to reach the faucet.
  • taylorgeo
    taylorgeo Member Posts: 74
    jhewings said:
    Above the valve consider the braided silver flex lines from the home center (assuming you are not in a high rise). There are different sizes. Most modern kitchen sink faucets and angle valves need 3/8" at both ends but you might need 1/2" at either end depending on what's there. You probably need a basin wrench to reach the faucet.

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