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Siemens
Combi valves PN 25 with flanged connections
CE1N4316en
Building Technologies
2018-04-18
Engineering notes
Valve
Symbols / Direction of flow
Flow in control mode
Valve stem
VPF53..
retracts
extends
Combi valve
variable
closes
opens
The direction of flow indicated (arrow on the valve body) is mandatory!
The valves should preferably be mounted in the return pipe where temperatures
are lower and where the sealing gland is less affected by strain.
Symbol used in catalogs and application descriptions
Symbol used in diagrams
There are no standard symbols
for Combi valves in diagrams.
A strainer or dirt trap should be fitted upstream of the valve to enhance reliability
and service life.
Remove dirt, welding beads etc. from valves and pipes.
Do not insulate the actuator bracket, as air circulation must be ensured.
Mounting notes
Combi valve and actuator can be easily assembled on site. Neither special tools
nor adjustments, besides the presetting, are required. Prior to mounting the
actuator, the required volumetric flow must be set. The valve is supplied with
Mounting Instructions 74 319 0711 0.
Symbol
Recommendation
Mounting positions
