Cavagna Kosan 924N automatically switches from empty service cylinder to full reserve cylinder, ensuring continuous gas flow to appliances. Highly visible full/empty indicator signals refill. This unique indicator is also visible from the top when viewed through propane tank cover lid, eliminating the need to remove the entire propane tank cover to view which cylinder is full or empty.
Allows removal of empty cylinder for refill without interrupting propane supply.
Normally used on RVs with a two tank hookup.