The high temperatures and chlorine in your hot tub can fatigue the plastic clip which holds the spa jet in place. If you are having trouble with your Waterways jets popping out, this may be the solution. Remove the diffuser from the back of the jet and replace it.

This diffuser fits the Waterway Mini Storm series of jets used by many manufacturers. It is not designed for backlit jets.

This diffuser is 4.5 cm in diameter and 8.5 cm long.

Waterway Mini Storm jets measure approximately 3" (76mm) across and come in several different designs. They have a 5/16" nozzle and allow a flow of 10 US gallons per minute at 10psi.

The Waterway part number for this diffuser is 218-6930. Mini Storm jets generally have a part number in the format 212-7XXX.