Common air control used since early 2000s. The top unscrews completely. Air intake from above spa lip. 1/2″ or 15mm slip fit for pipe or threaded socket adaptor added for 1″ / 25mm pipe connection.
- Cap measures 38.5mm*
- *Note: there are other variations with other types of caps.
- Internal piece’s thread measures approx 20.5mm
- Outer body thread measures approx 26mm.
wcasf102 asf102