Cart Water-based Fire Extinguisher suppliers 1. What is a 45 liter water based fire extinguisher? The 45 L water base type extinguisher is a special type of fire extinguishing equipment, consisting of a container filled with water and an hould be repaired or replaced in time to maintain the integrity of the equipment.Cart Water-based Fire Extinguisher suppliers website:http://www.hgchinafiresafety.com/water-based-fire-extinguisher/cart-water-based-fire-extinguisher/