Akron Brass Apollo Hi-Riser [3431]  Single-Inlet Portable and Deck Fire Monitor. The Apollo Hi-Riser includes the outstanding features of the standard Apollo™ Single and Apollo™ Dual with the added benefit of height. Use on the deck of a pumper to rise above light bars and other apparatus obstructions - without the need for extra deck mount extension devices or telescoping pipes. Simply pull a pin to elevate the nozzle 24'' above the deck. With one step, you can easily take the Apollo Hi-Riser from deck to portable, ground operations. In portable mode, the base helps maintain stability throughout the entire operating range up to 800 gpm.