PresAir Trol Center Spout Pressure Switch [21A] [1/8" Barb] [SPDT] (PT11120A) grasslin A flow switch like this

A flow switch like this is useful because it helps the system verify water movement

Useful when replacing a damaged or poorly seating original fitting

even a working control panel can feel dated or confusing

5 kW Spa Heater Assembly is designed for compatible 240V spa systems where the original heater has become unreliable and can no longer maintain the stronger heat performance the spa was designed around

PresAir Trol Center Spout Pressure Switch [21A] [1/8" Barb] [SPDT] (PT11120A) grasslin A flow switch like thisPresAir Trol Center Spout Pressure Switch [21A] [1 8" Barb] [SPDT] (PT11120A) is a replacement heater or heater service component from Presair Trol for compatible pool, spa, or bath heating systems. It is used when servicing worn, damaged, or failed heater assemblies where the correct model series, fuel or voltage configuration, sensor style, element size, or hardware fit must be matched. Use part number PT11120A when matching this item to an existing