Connect 1/2" tubing to 1/2" pipe with the half inch by half inch female adapter.

Connect 1/2" tubing into a 3/4" male pipe fitting with the half by three quarters female adapter.

Connect 1/2" tubing into a 3/8" male pipe fitting with the half by three eighths female adapter.

Connect 3/4" tubing into a 3/4" male pipe fitting with the three quarters by three quarters female adapter.