Commercial Fixed Wing
Flight Attendant Current
Distraction; Time Pressure
Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Other / Unknown
General None Reported / Taken
Environment - Non Weather Related; Human Factors
Upon boarding [Passenger X] was noted to have a valve connected to his mask board. As Flight Attendant A was able to ask the valve be covered with one of the on board masks or swapped at his discretion due to the company not permitting direct exhaust valves. He indicated his mask had filters on the interior and was disappointed he could not use his preferred mask.  After discussing with crew we agreed the valve at least needed to be covered or swapped out. Mask was swapped prior to departure. Advised I had asked for a Supervisor to ensure we were on the same page regarding masks and valves noting it was not my intent to single him out or pick on him; but wanted to ensure we were on the same page for policy. The passenger thanked me and we departed for ZZZ1.Enforce policy at gate.
Flight Attendant reported a passenger that had a valve on their mask was asked to replace the mask or cover the valve.