The PresAir Trol vacuum switch is designed for compatible systems that use a 1/8 inch MPT connection and need a 21 amp vacuum-responsive control component. Vacuum switches are useful because they help the system respond appropriately to vacuum conditions that may be part of normal operating and safety logic.This replacement is especially useful when the original switch has become inconsistent, no longer reacts to vacuum changes properly, or causes intermittent equipment behavior. Matching the original connection and rating helps make replacement more straightforward and keeps the control setup closer to its intended design.It is a practical service part when restoring dependable vacuum-based switching is important to overall system performance. PresAir Trol vacuum switch rated at 21 amps 1/8 inch MPT connection for compatible installations Helps restore vacuum-responsive control behavior Useful when the original switch is unreliable or nonresponsive Supports more dependable system operation
![PresAir Trol Vacuum Switch [21A] [1/8" MPT] (VS12506E)](https://cdn.shopify.com/s/files/1/1751/9347/products/47-369-2000_xl.jpg?v=1486194855&width=480)
![PresAir Trol Vacuum Switch [25A] [1/8" MPT] [Adj] [135-300" Water] (VM12540E)](https://cdn.shopify.com/s/files/1/1751/9347/products/47-369-2005_xl.jpg?v=1486194856&width=480)
