An Orifice in a fuel heat exchanger water line is a flow restriction device that is designed to regulate and control the flow of water through the line. It is a small, precision-engineered opening that creates a pressure drop in the fluid, allowing for efficient heat transfer between the fuel and water. It creates a pressure drop by increasing the velocity of water as it passes through the restricted opening. The pressure drop allows for efficient heat transfer between the fuel and water in the heat exchanger.Attributes:• Durability and corrosion resistance.• Ensures consistent flow control.Applications:An Orifice is used to maintain the desired flow rate, control pressure drop, and optimize heat transfer efficiency. It helps regulate the temperature of the water and ensures that the heat from the fuel is effectively transferred to the water, thereby enhancing overall system performance.