On the filter setup there is this faucet that is connected to a hose which I use to drain the pool when it gets too high after big rain storms..

It's has started leaking from the knob, it's getting worse and needs to be replaced. I don't want to bust anything on the PVC so not sure what to do. Does anyone know how this sort of thing works, is that just a screw in where the faucet meets the pvc or is it sealed on there with glue? Wondering if anyone else has anything set up like this and would know how I can go about replacing it.

It's has started leaking from the knob, it's getting worse and needs to be replaced. I don't want to bust anything on the PVC so not sure what to do. Does anyone know how this sort of thing works, is that just a screw in where the faucet meets the pvc or is it sealed on there with glue? Wondering if anyone else has anything set up like this and would know how I can go about replacing it.