FULL SEAL WELDING TYPE NUCLEAR-GRADE VALVE

摘要

A full seal welding type nuclear-grade valve comprises a valve body and a valve seat (20). On the valve seat (20) are provided a rotating shaft (9), an oil cylinder (2), a check valve (4), a first valve hole (12) and a second valve hole (19). A rotating valve plug (17) is pivoted on the rotating shaft (9). The oil cylinder (2) is connected to the first valve hole (12) of the valve seat (20). An end of the oil cylinder (2) is provided with an oil cylinder cover plate (22). The rotating valve plug (17) comprises a valve cover (18) and a rotating piston (15) connected to the valve cover (18). A spring (8) is tightly nested on the rotating shaft (9). The full seal welding type nuclear-grade valve has better sealing property so as to avoid leakage. Meanwhile, the valve has no torque so as to save labor during opening.