Why is a visible, sanitary restrictor used on the diversion line of an HTST?

A visible, sanitary restrictor on the diversion line of a High-Temperature Short-Time (HTST) pasteurizer is used primarily to compensate for lost head pressure during the diversion process. In pasteurization systems, maintaining adequate pressure is crucial for efficient flow and to ensure that the process operates within specified parameters. When the product is diverted, there can be a loss in pressure, which could affect the flow rate and the control of the pasteurization process.

The restrictor helps manage this loss by creating a pressure drop that enables the system to maintain an appropriate flow rate, ensuring that the pasteurized product can still be maneuvered through the system effectively without compromising the quality or safety standards. By having a visible restrictor, operators can monitor its function, ensuring it is sanitary and operating as designed, which ultimately aids in maintaining the integrity of the pasteurization process.