Koolance (patent-pending) quick-disconnect shutoff valve. 13mm (1/2") ID, 19mm (3/4") OD (common Tygon tubing size) female straight connection with compression fitting. It will fit any Koolance VL3 High Flow male shutoff valve. After a quarter twist, the quick-disconnect nozzles will separate. Liquid on both sides will be automatically obstructed with only 0.5-1mL freed. Nozzles are nickel-plated brass, silicone o-rings.
OD: 19mm (3/4") ID: 13mm (1/2") Wall: 3mm (1/8")