Before, i could not get the end in at all, no matter how hard i pushed, and regardless of the outer ring being pushed either. I looked real close and could tell they gave me the wrong fitting, and taking just that much off allowed it to go in and click snugly. I did not see any other mechanism inside the coupling waiting to be pushed but i will look again. So no other valves before the shower knobs?
2015 Voltage 3800 w/ Epic IV, Int&Ext, Garage Pkgs; 8x100W Solar, 2x Xantrex C35 Charge Controllers, SW2000 Inverter & Monitor; 2005 Chevy Duramax Dually 3500 w/Banks; Kawi KFX700 & Polaris Scrambler 500 ATVs.