PresAir Trol Tinytrol Pressure Switch [21A] [1/8" MPT] [SPDT] [2 PSI] (TNP-111R-2PR) spapumps sized at 1-5/16 inch inside

sized at 1-5/16 inch inside diameter and 1-5/8 inch outside diameter

3-3/8 inch face-diameter twin-roto deluxe scale-style design

5 kW output helps restore stronger heating performance

A properly selected replacement helps restore a cleaner front edge at the skimmer opening while supporting a stronger finished installation

A cord like this is useful because it helps maintain the correct electrical relationship between the second pump position and the supported control system while keeping the installation neat and serviceable

PresAir Trol Tinytrol Pressure Switch [21A] [1/8" MPT] [SPDT] [2 PSI] (TNP-111R-2PR) spapumps sized at 1-5/16 inch insideThe PresAir Trol TinyTrol pressure switch is built for compatible systems that use a 1 8 inch MPT connection and need an SPDT switch rated at 21 amps with a 2 PSI operating point. Pressure switches like this are useful because they help confirm the proper pressure condition before the connected equipment operates the way it should. This model is especially valuable when the original switch no longer reacts accurately, causes intermittent operation, or