Swivel tight adapter for use with conventional or dual point fill systems. Brass construction. Buna-N gasket for positive seating on standard riser pipes. Recessed threads. 4" cam and groove. The swivel feature prevents accidental loosening of threads. Incorporates a locking system of two set screws located 90 degrees apart. These screws are tightened onto the riser pipe threads after the adapter is properly torqued in place, preventing the hose torque from the product fill process from affecting the seal of the adapter to the riser pipe. The dual Viton o-rings are field replaceable.