Wikipedia provides a quick primer on orifice plates English orifice plate orifice plate http://en.wikipedia.org/wiki/Orific...an_orifice On this chapter orifice plate http://en.wikipedia.org/wiki/Orific...an_orifice English orifice plates https://en.wikipedia...i/Orifice_plate http://en.wikipedia.org/wiki/Orifice_plate Orifice plate Coefficient of discharge Orifice plates orifice plates http://en.wikipedia.org/wiki/Orifice_plate https://en.wikipedia.org/wiki/Orifice_plate https://en.wikipedia.org/wiki/Orifice_plate Orifice plates http://en.wikipedia.org/wiki/Orifice_plate Orifice Plates orifice plate English Wikipedia orifice plate article on wikipedia orifice meters https://en.wikipedia.org/wiki/Orifice_plate Orifice plate orifice plate mass flows orifice plate article on wikipedia orifice plate On this chapter Orifice plates http://en.wikipedia.org/wiki/Orifice_plate orifice plate