Balboa 3/8" sensor mount

This Balboa sensor mounting assembly is designed to be installed in the spa shell. It allows you to mount a 3/8" (9.5 mm) diameter sensor, so that the sensor is in direct contact with the water in the spa.

The mounting nut can be adjusted depending on the thickness of your spa shell. The back nut squeezes a seal around the sensor so that it remains waterproof.

Note: The piece is now transparent and replaces the old version (photo 2) perfectly.

Dimensions
Length: 45 mm
Outside diameter of the face visible from inside the spa: 41 mm
Inside diameter of the sensor gland: 9 mm

Part numbers
Balboa: 30388-CLR, replaces 30388-GRY