Bartomeu and team captain Lionel Messi gave their support to Valverde after the debacle at Liverpool and the president says that the club's stance will not change following the failure to beat Valencia.
Denied a domestic double and a record fifth Copa del Rey triumph, the spotlight will again turn on Valverde and his future as Barcelona coach, but Bartomeu backed a coach also offered support on Friday by star player Lionel Messi.
By contrast, Barcelona's campaign collapsed in the last fortnight as they threw away a three-goal Champions League semi-final lead to be eliminated by Liverpool before letting the Cup slip out of their hands.
"That's the responsibility and it's hard and you have to take it in". Everyone has to analyse their season and what we can improve in.
"That game has spoilt a little the year we have had", he said. "We all had our focus on winning the Champions League, so the disappointment was that much greater".
When asked if he himself was considering leaving Barcelona, Messi responded: "No, no, no". "I think he was practically blameless for what happened with Liverpool".
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He called on his team to try and forget the galling defeat by Liverpool when Barca take on Valencia in this weekend's Spanish Cup final, weakened by injuries to his fellow forwards Uruguayan Luis Suarez and Frenchman Ousmane Dembele.
Messi added: "I would like Valverde to continue".
"Now we have a final, a chance for a trophy, we have the chance to do a double and finish the year well, we have to win it like every final we play in".
That hangover continued as they were beaten 2-1 by Valencia to end the season with just the LaLiga title despite, a month ago, having dreams of a treble.
"The worst thing we could do, and what we cannot forgive ourselves for, is the fact that we did not compete".
"We've reached a first final in 11 years, a first Europa League semi-final in five years, and qualified for the Champions League for the second consecutive year".