Data Sheet for Product

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Siemens Combi valves, PN 25 CE1N4855en
Smart Infrastructure 2020-10-19
When turning the manual control knob in counter-clockwise direction or manually
operating the actuator, the valve opens. The actuator closes the valve. The valves
are supplied fully open. The manual knob is not designed for permanent manual
operation.
Maintenance notes
The V..P46.. PICV valves are maintenance-free without cartridge.
Valve plug, stem, presetting, diaphragm etc. may not be disassembled
When performing service work on the valve and / or actuator:
· Switch off the pump and disconnect power supply.
· Close the shut-off valves in the piping network.
· Fully reduce pressure in the piping network and allow the pipes to cool down
completely.
Remove the electrical connections only if necessary.
The stem sealing gland cannot be exchanged. Should leakage occur, the whole
valve must be replaced.
Do not dispose of the device as household waste.
Warning
Due to the tensioned spring return, valve disassembly may result in flying parts
causing possible injury.
Only authorized staff may disassemble valves with tensioned spring return!
Disposal
· Special handling of individual components may be mandated by law or
make ecological sense.
· Observe all local and currently applicable laws and regulations.
Warranty
Application-related technical data are guaranteed only when the valves are used in
connection with the Siemens actuators listed under "Equipment combinations" on
page 3. When used with actuators of other manufacture, any warranty by Siemens
becomes void.
Technical data
Functional data PN class PN 25 as per EN 1333
Permissible operating pressure 2.500 kPa (25 bar) as per ISO 7628 / EN 1333
Max. differential pressure
Min. differential pressure
600 kPa
See tables volumetric flow/dial presetting
Valve characteristic Linear as per VDI/VDE 2173
Leakage rate in general
DN 25…32 with STA..3..
Class IV (0…0.01% of volumetric flow V
100
) to
EN 1349
Class III (0…0,1% of volumetric flow V
100
) per
EN 1349
Average flow accuracy
+/-10% from ΔPmin - to 2.5 x ΔPmin
+/- 5% from 2.5 x ΔPmin – to 600kPa
Manual control
Sealing gland
Disposal