Automatically switches from empty service cylinder to full reserve cylinder, ensuring continuous gas flow to appliances. Highly visible full/empty indicator signals refill. The unique indicator is 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. UL Listed.
Automatically switches from empty service cylinder to full reserve cylinder, ensuring continuous gas flow to appliances. Highly visible full/empty indicator signals refill. The unique indicator is 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. UL Listed.