Home Depot or Lowe's they re your best friend
They do carry some fittings but its limited to pnuematic tool type fittings so like other answers your best bet is the hardware store.
Most common fittings found at a local hardware store
No. But they carry plumbing tools.
No they don't. But do have many plumbing tools
Need more information for the right things
What kind Copper pvc galvanized iron pipe ?
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