Is there a brass replacement for the Camco drain valve?

I tried a brass plug for the water heater drain and had trouble getting it to seal. didn't want to bear down on it too hard as it was metal to metal. I also had a metal plug that had a removable smaller drain plug in it.
and no way was it easy to get to as it hid behind a copper tubing and had to use a ratcheting box wrench (offset) to get to it.
bumpy