Shut Off and Test Valve

摘要: A shut-off and test valve ( 1, 101 ) for gas plants comprising a base body 2, 102 having an inlet 4, 104 ), outlet 3, 103 further 20, 120 hollow spherical shutter 11, 111 provided with first opening 16, 116 second 17, 117 third 12, 112 ); the being exclusively configurable between activating condition, condition security in which is positioned such as to prevent any fluid communication of ).