What system utilizes a plate for foam concentrate at a specified pressure?

The system that utilizes a plate for foam concentrate at a specified pressure is the orifice plate proportioning system. This type of system works by using a specially designed orifice plate that controls the flow of foam concentrate based on the pressure differential created as water passes through the plate. When water flows through the orifice, it generates a pressure drop, which allows for the precise mixing of the foam concentrate with the water stream at a predetermined rate.

This method ensures that the correct amount of foam is delivered according to the operational requirements of the fire protection system. Such systems are commonly used in various applications, including those where foam is needed for fire suppression, as they provide a reliable and consistent method for proportioning foam in relation to water flow.

Understanding the orifice plate's role in maintaining the correct mix ratio is crucial for maximizing the effectiveness of foam fire suppression strategies, particularly in environments where flammable liquids are present. This system's effectiveness hinges on maintaining the required pressures to ensure optimal performance during fire emergencies.