CMP Drain 1/2" to 3/4"

CMP Brand drain valve with a 1/2" socket and an adaptor to make it 3/4" barbed.

So, you can use either 1/2" or 3/4" pipe.

To use the 3/4" connector, it would need to be glued into place.

(The picture shows it with the 3/4" connector attached)