Data Sheet for Product

12
Siemens
N4211en
Smart Infrastructure
2021-12-13
Engineering
We recommend installing the ball valve with spring return since temperatures are lower
on heating plants which increases the lifespan of the sealing gland on the stem.
Ensure there is no cavitation (see Section Technical design [➙ 2]).
A filter must be installed upstream of the ball valve to increase functional safety.
We recommend using temperature adapter ALJ100 in locations exposed to condensation
to protect the actuator. Lubricate the adapter axle with silicon grease at medium
temperatures ≤ 0 °C.
T
M
Medium temperature
T
A
Ambient temperature
Application range actuator/valve
Install with ALJ100
Only use GDB.., GSD.., GQD.. and GDD.. actuators at medium temperatures > 0 °C.
Permissible media
Using the ball valve together with potassium formate-based media can result in leakage
over the stem to the outside. The reason is the high level of penetration at low surface
tension of media based on potassium formate.
Siemens rejects any and all liability for damages or consequential damages resulting from
the use of this media together with our ball valves.
Mounting
It is easy to assemble the ball valve and rotary actuator; it can be done at the construction
site. No special tools or settings required.
Ball valve VAI61.. / VBI61.. is supplied together with mounting instructions M4211
(7431906470)
Mounting position
VAI60..
VBI60..L
VBI60..T