I donthink you can valuebet it, cause its very hard to get called by worse hand, but it may be a good protection bet against quite many straight-draws villain may have.

Against flush you have anyway only 10% equity, so it`s not a big concern to get blown off the hand and majority of time you will still get a chance to realize your equity (villain is not going to c-r all his flushes).
Also tight opener, who folds often to 3b, should not have much lonely Ks in his OOP calling range, so we are not worried at all to get bluffed.