Poppet Valve 1 : A type of valve common on early subsurface safety valves, where higher than expected flow through an orifice can move a round ball onto a sealing surface and stops the flow
George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}