This Boston Valve suits most models of tubes. Don't get caught out this summer with a lost or broken valve. The bottom portion is screwed into the towable, while the top is screwed open for inflation and then tightened after inflation. Air is easily released by unscrewing the base connector. It’s important not to miss a thread (24mm) when screwing in the Boston Valve, as it may cause the tube to leak air slowly.
Product: Boston Valve