In doing so, he became only the second Spaniard in Premier League history to score a hat-trick after Fernando Torres.
"It's good to know Torres and me are the only Spanish players to have scored hat-tricks in the Premier League and I hope there are more to come," said Gomez.
"Everyone has signed the match ball and I will keep it somewhere safe at home.
"My last hat-trick was when I was a kid. I was 11 or 12 and was at Barcelona so it's been a long time, but I'm very happy to score a hat-trick and the team won.
"We got the result we wanted and it can't be better."