8mm (5/16) duotight x 4 Way Manifold with Check Valves & Isolation ValvesThis manifold bracket comes fitted with check valves per ball valve outlet. Each check can also be removed if you want gas or water to move freely in all directions. If you want to cap off certain lines, we would recommend using an 8mm (5 16') Plug Using a thin flat headed screw driver, simply slide pop the black retainer tabs and remove the ball valve The duotight 8mm 6 way manifold is complete with mounting capabilities out of the box using button