The Fiorentina playmaker is adamant the decision by referee Andrea Gervasoni to dismiss him was wrong and says the official lied about the incident in his report
Valero and Parma counterpart Gianni Munari were both dismissed in the fourth minute of stoppage time during the 2-2 draw following an incident involving the two players.
Serie A's disciplinary committee confirmed Valero would be banned for four games as a result, while Munari will only serve a one-game suspension.
The judgement ruled Valero "placed one hand on the referee's shoulder, pushing him", but the Spaniard denied Gervasoni's recollection of events and insisted he had shown a "lack of respect" by questioning his integrity.
"I want to say that everything that happened in Parma saddened me. I am disappointed with the system," Valero said on Wednesday.
"What the referee wrote after the match shows a lack of respect to my integrity as a person and a player.
"I did nothing to deserve getting sent off; all I was doing was separating two players who were quarrelling and it was me who got sent off.
"Never in my life have I done anything against the referee. Everything that Gervasoni said was lies."