METHOD FOR INSPECTING PILOT-TYPE SAFETY VALVE

摘要

When a pilot-type safety valve (1) is installed on a pressure vessel (4), a valve (6) is provided between a pilot valve (2) and the pressure vessel (4), a pilot port (7) is provided between the valve (6) and pilot valve (2), a source valve (8) is provided between a main valve (3) and the pressure vessel (4), and a primary-side port (9) is provided between the source valve (8) and main valve (3). An inspection pressure source (10) is appropriately connected to the pilot port (7) or primary-side port (9) when the pressure vessel (4) has internal pressure, the valve (6) and source valve (8) are used to appropriately stop the supply of pressure to the pressure vessel (4), and pressure for inspection is supplied from the inspection pressure source (10).