<p>A flow control device includes a fitting having three portals. Two of the portals are input portals and one of the portals is an exit portal. Located in one of the input portals is a normally closed back flow prevention valve. The normally closed back flow prevention valve prevents back flow of fluid through the fitting when the fluids flowing through the fitting are changed.</p>
申请公布号
EP2069580(A2)
申请公布日期
2009.06.17
申请号
EP20070842205
申请日期
2007.09.11
申请人
ALCON, INC.
发明人
STEPPE, DENNIS, L.;HUCULAK, JOHN, C.;SANCHEZ, ROBERT, J., JR.