The Prime Pro X Series is now compatible with blow off X technology with the release of the new Gen II.
The blow off X technology allows adjustable customization of purge settings mid session and without needing to swap parts. You can adjust your purge by up to 15 settings with this add on.
Both the sleeve and blow off X adapter are included with this set.
Installation instructions: Instructions
Do NOT have the upper and lower Blow-Off adapters shut closed at the same time! Purging against a pressurized system will lead to over pressuring the hookah and causing water to rise up the smoke column into your tobacco bowl.