This Raypak component is a specially designed piece of equipment known as a bypass baffle. The primary function of this device is to control the flow of water through the heat exchanger in heating systems, particularly those used in swimming pools and spas. By managing the water flow, it ensures optimal heat transfer and prevents overheating, thereby maintaining the efficiency and longevity of the system. Constructed from high-quality, durable materials, it is designed to withstand prolonged exposure to high temperatures and harsh chemical environments. It is compatible with various models of Raypak heaters, making it a versatile replacement part.