ITT chrome 1" air control valve

This top-side valve, with a handle in chrome-plated plastic, regulates the flow of air through the hot tub jets. It connects to 1" air pipe.

Dimensions
Inside diameter : 1-inch (33 mm)
Hole size : 42 to 43 mm
Thread length : 55 mm
Thread diameter : 41 mm
Handle diameter : 67 mm

Part numbers
ITT HydroAir : 10-2100PC