Which type of hose lay utilizes a four-way hydrant valve?

The type of hose lay that utilizes a four-way hydrant valve is the forward lay. In this scenario, the hose is deployed from the apparatus to the hydrant, allowing for a quick connection and the ability to supply water immediately while the engine proceeds to the fire scene. The four-way hydrant valve allows for the connection of additional hoses to suit various operational needs, enabling the distribution of water to multiple lines or providing flexibility in fireground operations.

Using a four-way valve is particularly beneficial in forward lays, as it can enhance water supply options and improve the efficiency of the hose deployment. Forward lays are commonly employed when the fire location is known, and this method minimizes the time it takes for firefighters to establish a reliable water supply while advancing towards the incident.