When performing high-rise operations, which piece of equipment is essential for a two-inlet FDC?

In high-rise operations, the use of a two-inlet Fire Department Connection (FDC) is critical for ensuring a reliable and effective water supply during firefighting efforts. A clappered siamese is specifically designed to connect two hose lines to a single water supply source, allowing for increased water flow to meet the demands of a high-rise fire situation.

The clappered feature is particularly important because it prevents backflow from one inlet to another, ensuring that the water flows in the intended direction and maximizes the available pressure and volume for firefighting. This is vital in high-rise scenarios where the distance and potential elevation of the fire might require more than one hose line to adequately address the emergency.

Other equipment options, while beneficial in various scenarios, do not serve the same purpose as effectively in high-rise operations as the clappered siamese. A hose splitter might divert water from one supply but doesn't provide the same level of control or backflow prevention needed in high-rise interventions. A single inlet connector is limited in capacity as it only allows for one hose line. Reel hose is typically used for quick deployment and might not fit the specific needs of connecting to dual inlets for increased flow. Hence, the clappered siamese is