How do you calculate the appliance pressure loss?

The calculation of appliance pressure loss is a critical component in understanding how to manage water supply systems effectively. The correct approach is to add 10 psi for each appliance connected to a water supply line. This 10 psi represents a standard loss that accounts for various factors such as friction loss, the configuration of piping, and variations in the appliances being utilized.

Adding 10 psi per appliance helps ensure that sufficient pressure is maintained throughout the system to effectively operate each appliance, whether it be a nozzle, a hydrant, or any other device requiring water. This standardized figure simplifies calculations in real-time operations, allowing firefighters and operators to make quick, informed decisions about adjustments needed to maintain optimal performance during firefighting efforts.

Understanding this principle is crucial for efficient water supply management and allows for better planning when deploying multiple appliances in the field.