The Micro-Manager O2 Administrator is a compact, simple to operate flow device that provides oxygen at a flow rate of 101pm for one to five patients simultaneously. Comprised of an anodized aluminum manifold with check valves and threaded barbed fittings with flow restriction orifices. Comes standard with five screw-on 101pm orifices. Other sizes available by special order. Replacement package of 5 qty. DISS x barb Ipm fittings available (2, 4, 6, 10, and 15 Ipm).