You wont see Vacuum lavs installed it would be a major modification of the plane and cost way too much money, don't even know if it is available as a retrofit.
See the current lavs have their tanks under each lav.
A vacuum system uses pipes and suction to a holding tank in the rear of the plane.
Two totally different systems.
See the current lavs have their tanks under each lav.
A vacuum system uses pipes and suction to a holding tank in the rear of the plane.
Two totally different systems.