What is a function of a hose liner?

The function of a hose liner is to reduce friction loss within the hose. As water flows through the hose, it encounters resistance from the internal surface, which can lead to a decrease in pressure and flow rate. Hose liners are often made of smooth materials that minimize this resistance, allowing water to travel more efficiently and effectively through the hose. By reducing friction loss, the liner helps maintain the necessary pressure and flow for firefighting operations, ensuring that firefighters can deliver water effectively when it’s needed most.

While a hose liner may contribute to the overall integrity of the hose and could play a role in minimizing leaks, its primary purpose is to optimize the flow of water by minimizing friction loss.