What should be done when filling the booster tank?

When filling the booster tank, cracking open the tank fill/recirc valve and gating it down by approximately half allows for controlled filling of the tank. This method ensures that the water flows into the tank at a manageable rate, preventing potential overflow or splashing that could occur if the tank was filled too quickly. Controlling the flow rate through this valve is essential to maintain an appropriate water level in the booster tank and avoid water pressure spikes that could destabilize the system.

Using too much flow too quickly can risk exceeding the tank's capacity, leading to spillage and other hazards. This approach also takes into account the design of the fire apparatus and its components, which are typically not built to handle abruptly high flow rates during filling. The chosen option promotes safety and efficiency in the operation of fire rescue equipment and ensures proper use of resources while filling the booster tank.