Data Sheet for Product
Technical Instructions  599 Series 6-Way Ball Valves 
Document Number 155-803 
November 10, 2020 
Page 6  Siemens Industry, Inc. 
Operation 
The 6-way ball valve enables control between two sources (A and B) through 
positions 0° and 90° and is closed at 45°. Both sources supply the same coil (C). 
See Figure 2 and Figure 3. 
Figure 2. 6-way Ball Valve Characteristic Curve, 1/2-Inch Valve. 
Figure 3. 6-way Ball Valve Characteristic Curve, 3/4- and 1-inchValves. 
The 6-way ball valve is combined with the GDE161.1P modulating fail-in-place 
actuator. The market standard operation is shown in Figure 2 and Figure 3. A control 
signal of 0V provides full flow from Source A, 5V is both Source A and Source B 
closed, and 10V provides full flow from Source B. Both Sources A and B have a 
linear flow characteristic. The control range for modulating the flow of Source A is 
with a control signal between 0V and 3.3V for the 1/2-inch valves and between 0V 
and 4.5V for the 3/4-inch and 1-inch valves. The control range for modulating the 
flow of Source B is with a control signal between 6.6V and 10V for the 1/2-inch 
valves and between 5.5V and 10V for the 3/4-inch and 1-inch valves. 
CAUTION: 
For the actuator to operate according to the market standard described 
above, the DIP switches must be set as shown in Figure 4. The left DIP 
switch is set to the off (down) position, while the middle and right DIP 
switches are set to the on (up) position. These are the settings when the 
171C 6-way valve/actuator assemblies are shipped from the factory. If the 
GDE161.1P actuator is purchased separately, the default DIP switch 
settings are all in the off (down) position, and must be set as shown in 
Figure 4 when used with the 6-way ball valves. 
Figure 4. GDE161.1P DIP Switch Settings for 
Proper 6-Way Ball Valve Operation. 










