Data Sheet for Product

5/10
Siemens 2-port and 3-port valves PN 16 CE1N4845en
Building Technologies 2018-11-05
V..45.10-0.25 to V..45.25-6.3
V..P45.25-10 to V..P45.40-25
0,8
1
0,6
0,4
0,2
0
0 0,2 0,4 0,6 0,8 1
B
A
B
A
A
B
4845D02
AB
A
B
H
100
H
0
V
100
0,8
1
0,6
0,4
0,2
0
0 0,2 0,4 0,6 0,8 1
B
A
B
A
A
B
AB
A
4845D03
H
100
B
H
0
V
100
The k
vs
-values in bypass B for valve types V..45.10-0.25.to V..45.25-6.3 represent only
70 % of the k
vs
-value in the straight-through control path A → AB (for other types
100 %). This compensates for the flow resistance of the heat exchanger or radiator, so
keeping the overall flow rate,
&
V
100
as constant as possible.
Engineering notes
Valve construction
Valve series
Valve flow in control mode
Valve stem
Inlet A
Inlet B
Outlet AB
Retracted
Extended
2-port valves
4845Z12
AB
VVP45..
A
AB
variable
variable
A
AB
opens
A
AB
closes
3-port valves
AB
A
B
4845Z13
VXP45..
A
AB
B
variable variable constant
A
AB
opens
B
AB
closes
A
AB
closes
B
AB
opens
3-port valves with T-bypass
A
4845Z14
B
AB
VMP45..
A
AB
B
variable variable constant
A
AB
opens
B
AB
closes
A
AB
closes
B
AB
opens
The direction of flow MUST be as indicated by the arrow, i.e. only from
A
→ AB and B → AB.
The 3-port valve types VXP45.. and VMP45.. may only be used in mixing
applications
Valve flow
characteristic
Warning!