Flow switch - Manufactured by Harwil - Connection: 1/2 inch MPT (although actual diameter of outer thread is more like 3/4inch). Length: 80mm Length of plastic arm: 35mm (1 -3/8inch) Outer diameter of thread: 20mm
This flow switch is found in some older Sundance and Jacuzzi Hot Tubs with a white PVC tee -
The arrow on the side must point in the direction of the flow and the thread must be wound all the way in. This part will not fit inside the clear plastic tee also in this section.
