St16 stainless steel pool heat exchanger.
 
This type of heat exchanger is used to heat a swimming pool or spa from any Hydronic system such as an outdoor furnace. ... Specifically, it is used to keep the pool and boiler water separate while providing an efficient means to transfer heat between the two systems.
 
Material: stainless steel, titanium
Temperature: Min.: -190 °C Max.: 200 °C ...
Max pressure (bar): 10
Shell connection size (pool): 1"
Tube Connection Size (heating): 3/4"
Applications: for swimming pools and spas