Data Sheet for Product

5
Siemens
A6V11932500_en--_b
Smart Infrastructure
2020-08-12
Engineering
Refer to the Mounting notes and Commissioning notes.
Note the correct direction of flow, for both two-port and three-port valves as shown in the
diagrams below.
Recommendation
Fit a strainer upstream of the valve to increase reliability.
Warning
The direction of flow for two-port valves MUST be as indicated by the arrow, from A → B.
MVI422…two-port valve
De-energized position:
Port “A” closed
Three-port valves can be used in both diverting and mixing circuits.
When used in diverting circuits, the direction of flow for three-port valves is as indicated by
the arrow in the valve body, from AB → B and AB → A. (recommended).
When used in mixing circuits, the direction of flow for three-port valves is opposite the arrow
in valve body, from A → AB and B → AB.
MXI422…three-port valve (diverting circuits)
MXI422…three-port valve (mixing circuits)
AB
AB
A6V11 9 3 2 5 02 Z 15
AB
AB
De-energized position:
Port “A” closed
De-energized position:
Port “A” closed