What and how to strip sealer off of pavers?

We have to strip sealer off of a paver patio before we sand and seal it again. Does anyone have any recommendations, what product do should we use? We have already cleaned them. We have a 5.5 GPM HOT WATER PRESSURE WASHER. We need some assistance.

Dads stripper, and use the hot water. Mite have to use the gun instead of a surface cleaner. The stripper is nasty stuff so becareful