For applications requireing a single gas source to be distributed and balanced the Radnoti 120168 2-Way Teflon Needle Valve "Y" manifold offers an elegant solution. A borosilicate glass body and Teflon valve stems insure a chemically inert gas path. The individual needle valves offer a fine adjustment of flow to balance out delivery. Ground glass female luer fittings for inflow and outflow allow easy connection of tubing lines. A 3/8" glass rod fused to the manifold body allows for easy mounting on to most lab stands.