Patent EP-1876230-B1 (EP)
Inventor: WASSERHOEVEL THORSTEN
IPC: C12M1/26
Filed: 2007-05-09
Granted: 2008-09-17
Abstract: The sampling valve for sterile extraction of samples from a container or a pipeline system, comprises valve housing (2) with a valve inlet (3), a valve outlet (4) and with flow channel (5) connecting these, and a valve tappet and an actuation shaft (8). The valve inlet is fluidically connected with a pipeline leading extractable medium and with a discharge pipe. The valve tappet is movable back and forth in the valve housing, locks the flow channel alternatively in a closing position and releases in an open position. The sampling valve for sterile extraction of samples from a container or a pipeline system, comprises valve housing (2) with a valve inlet (3), a valve outlet (4) and with flow channel (5) connecting these, and a valve tappet and an actuation shaft (8). The valve inlet is fluidically connected with a pipeline leading extractable medium and with a discharge pipe. The valve tappet is movable back and forth in the valve housing, locks the flow channel alternatively in a closing position and releases in an open position. The actuation shaft is led movably in the valve housing and is connected with the valve tappet. The movement of the actuation shaft to the valve tappet is transferable, in order to move these between the closing position and the open position. The valve tappet is movably stored in an adapter body solvably connected with the valve housing. The valve tappet has tappet section, which cooperates with a valve seat formed at the adapter body and/or a sealing surface formed sealably at the adapter body. The adapter body is connected with the valve housing by a resting-, screw-, clamping- and/or secured plug connection. The adapter body opposite to the valve housing is sealed by an O-ring element. The tappet section opposite to the adapter body, the sealing surface or the valve seat, is sealed by an O-ring element. The tappet section has a valve disk. The adapter body has a connection for connecting with the pipeline. The adapter body is provided with a discharge bore, which lies in direction of flow behind the valve seat or the sealing surface. The end of the actuation shaft connected with the valve tappet penetrates into open position in the interior of the adapter body. The adapter body, the valve tappet and/or the actuation shaft are arranged coaxial to each other. The movement of the actuation shaft and the valve tappet is translatory and/or rotational. The actuation shaft is designed as a spindle and is led into internal threads designed in the valve housing. The actuation shaft and the valve tappet are loosely connected with one another and are surface contacted with each other. The actuation shaft has an uptake for an end of the valve tappet. The valve tappet is subjected in the direction of the spring force. A coil spring is arranged inside of the adapter body, in order to transfer the spring action to the valve tappet. The valve housing is designed t-shaped. The flow channel at the valve outlet is arranged in an angle of 90[deg] to the flow channel at the valve inlet. The adapter body is arranged rotatably in the valve housing in an angle of 360[deg]. The discharge tube is arranged pivotably relative to the valve housing in an angle of 360[deg]. The discharge tube is connected with the valve housing by a locking ring and a pressure screw. The valve housing, the adapter body, the valve tappet and/or the actuation shaft are made up of red cast and/or high-grade steel.