Balboa 4.0kW LowFlow Trombone Heater [26"x6"] [230v] (58375T) andersonmfg The Raypak flange gasket is

The Raypak flange gasket is designed for compatible 53

The Tecmark 3028 pressure switch is designed for compatible applications that use a single-pole normally open switch rated at 25 amps with a 1/8 inch barb connection

more polished appearance

Praher SM1-HPX62 multiport valve

Balboa 4.0kW LowFlow Trombone Heater [26"x6"] [230v] (58375T) andersonmfg The Raypak flange gasket isLow flow heating systems need components that can deliver temperature support without relying on the same circulation profile used in conventional heater designs. This 4. 0kW trombone style heater is built for that type of setup, giving compatible systems a heating option designed around lower flow conditions. The larger 26 inch by 6 inch format sets it apart from more common heater bodies and makes correct replacement matching especially important.