Specifically designed to integrate with Advanced Elements pumps, the AE4000 is a handy inflation gauge and Spring Valve adapter combo that can be used on any Advanced Elements model (2006 and newer) with our proprietary Spring Valve. Simply remove the Spring Valve adapter from the gauge housing, plug the gauge housing “in-line” in-between your pump’s t-handle and the inflation hose, then add the Spring Valve adapter to the other end of your hose and you’re all set for a reliable gauge reading during inflation! Alternatively, you can use the Inline Valve Adaptor as a hand-held gauge by leaving the Spring Valve adapter in-place on the gauge housing and simply threading the adapter onto your kayak’s Spring Valve.