Review on Premium 3/4 Inch BSPP Fuel Hose Swivel Connector | 360 Rotating, Multi-Plane Design & No NPT Threads by Richard Gallagher

Looked great. However, upon attempting the installation, it was found that the 3/4" male thread was not a National Pipe thread and would not work with NPT fittings. Instead, it has parallel threads sealed with an O-ring. But it won't screw into a standard 3/4 NPT socket. On closer inspection, you can see that the threads are different. The female end of the swivel is fine - fits 3/4 NPT. I can't find an adapter after extensive searching of local and online sources. Therefore, they are essentially useless and a waste of money and time.