THIS THREADS RIGHT INTO A FACTORY 2240 VALVE.. 15 MINUTE INSTALLATION .. 
 tested to 2000 psi underwater .. no leaks .  All aluminum..
connects right to the valve .. add a small diamter tank , reg pressure up to 1800// Easiest installation possible , no drilling , no tapping , no measuring, no pinning the valve, no extended valve needed  ..bare aluminum sanded, no fancy finish..