Fuel fill fitting for flexible tanks in tight quarters. Boaters who know and use Nauta flexible fuel tanks understand their advantages. Nauta tanks reduce condensation, are easier to secure, will not scratch decks and lockers, and do not corrode. This 90 degree deck fill fitting features a 1 1/2" hose barb and gives users of Nauta tanks a solution for tanks placed with limited overhead space. The fitting installs the location that best suits the application by cutting a hole in the top of the tank, inserting the fitting like a button on a shirt, and securing it in place with a lock nut. We recommend that this connection is periodically inspected and tightened as required: especially in the days following the installation as the fitting and tank wall seats to create a seal. For a solution to flexible tanks installed with limited clearance, a 90 degree fuel fill fitting is the best solution.