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

A properly selected cord helps support cleaner pump integration and contributes to more dependable control response

5 kW pressure-style in-line heater to restore reliable heating performance

Helpful in retrofit and custom mounting situations

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