Australian Spa Parts - Air Buttons and Plungers

Air Buttons or plungers for spas, spa baths and swimming pools

Air Buttons have been divided into sub-categories based on the diameter of hole required in the spa shell for them to fit. 
All air buttons operate in the same way so generally the make/model is not as important as being able to fit the existing hole.
Most secure with silicon, some with a locknut. Silicon can be used on all when access below is not available.