Patent ID: 8375970
Filing Date: 2013-02-19
Classification: E03C,F16K,Y10T

Abstract:
1. A valve system for protecting a fluid flow device from pressure comprising: a housing; a first flow path extending through said housing, said first flow path including a first inlet and a first outlet, said first outlet in fluid communication with the fluid flow device; a second flow path extending through said housing, said second flow path including a second inlet and a second outlet, said second inlet in fluid communication with the fluid flow device; a check valve, wherein said check valve prevents fluid flow from said housing through said second inlet; a shutoff valve within said housing capable of being switched between an open position and a closed position, said open position allowing fluid flow through said first flow path and said second flow path, said closed position prohibiting fluid flow through said first flow path; and a second actuator connected to said shutoff valve, said second actuator capable of moving said shutoff valve to the closed position.