Balboa Lo-Pro 1" air injector

The Balboa Lo-Pro air injector is commonly used in concrete spas, where it connects directly into a tee for 1 inch or 32 mm pipe. It is also sometimes installed in thin-walled spa shells.

This is a complete assembly, with the o-ring included.

Dimensions
Face diameter: 42 mm
Thickness of the part that protrudes inside the spa: 11 mm
Drill diameter, for installation in a spa shell (not recommended): 19 mm

Plumbing connections
Inner diameter: 27 mm
Outer diameter: 33 mm, for 1" socket (female) fittings

Part numbers
Balboa : 11-9200WHT