Koolance patent pending quick disconnect no spill coupling with automatic shutoff g 14 bspp threaded female fitting for screwing directly into a water block or other component it will only fit a koolance qd3 male quick disconnect after pulling the ring on the female qdc side the quick disconnect fittings will separate liquid on both sides will be automatically obstructed with approximately 0 2m l freed fittings are chrome plated brass maximum operating pressure is 2kgfcm2 28 5 psi