PresAir Trol Center Spout Pressure Switch [21A] [1/8" Barb] [SPDT] (PT11120A) grasslin Replacing an aging valve helps

Replacing an aging valve helps restore system balance

Matching the correct 3

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

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

An adapter cord is useful because it helps preserve proper electrical connection for supported 2-speed pump systems while making the installation more compact and organized

PresAir Trol Center Spout Pressure Switch [21A] [1/8" Barb] [SPDT] (PT11120A) grasslin Replacing an aging valve helpsPresAir 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