HydroAir Main Drain fitting hex nut

This suction / main drain fitting nut is a spare part of HydroAir's "Main Drain assembly" drain plug (part numbers 10-620x, see photo 2), which has not been available for sale since 2008.

The model did not comply with the American VGB ruling on pool and spa safety (Virginia Graeme Baker Pool and Spa Safety Act), passed that same year.

The nut screws onto the back of a wall fitting to hold these parts in place in the shell of your spa.

Dimensions
Inside thread diameter: 69 mm
Widest outside diameter: 95 mm

Part numbers
HydroAir: 30-6010