I purchased a rain barrel from the city. It is the usual recycled food barrel painted and fitted to be a rain barrel from Great American Rain Barrel Co
. The spigot is a small flimsy device that looks like the spigot from a 40 cup coffee maker fitted with a garden hose thread. It does not flow well, and can be tricky to operate.
So I started researching alternatives, and found it at Aquabarrel
, another rain barrel vendor. They sell a bulkhead fitting with the valve and thread converter for $22 plus shipping. I ordered one and received a rugged part in the mail several days later.
Start out by disassembling the top cap, screen and tray. Put the barrel on its side.