Laboratory service valves provide flow control of laboratory gases to your ICI Quick Ship lab setup. These brass service valves are available in both ball and needle valve options. Ball valves provide simple on/off control with a quarter turn of the knob. Needle valves allow for more gradual and precise control with proportional control of the knob. Both valve types are available in four flow pattern configurations—single, two at 90°, two at 180°, and four turrets at 90°. Choose from four service options including gas, air, vacuum, and nitrogen