With integrated pressure differential controller
Valve body made of gray cast iron GJL-250
DN 50 - 150
Volumetric flow 15 to 195 m
Equipped with pressure test points P/T
Can be equipped with SAX..P.., SAV..P.. or SQV..P.. electromotoric actuators
Use
For use in heating, ventilating and air conditioning systems, district heating, as a
control valve.
For closed circuits.
3
/h nominal, with presetting
Page 2
Type summary
H
100
min
V
100
V
∆p
min
Product number
Stock number
DN
[mm]
[m3/h]
[m3/h]
[kPa]
Standard flow rate
VPF43.50F16
S55266-V100
50
20
2.3
15
See
page
6 + 7
VPF43.65F24
S55266-V102
65
4.4
25
VPF43.80F35
S55266-V104
80
5.3
34
VPF43. 100F70
S55266-V106 -V106
100
40
12.1
68
VPF43. 125F110
S55266-V108
125
18.5
110
VPF43. 150F160
S55266-V110
150
43
25.6
148
High flow rate
VPF43.50F25
S55266-V101
50
20
4.3
25
See
page
6 + 7
VPF43.65F35
S55266-V103
65 6 35
VPF43.80F45
S55266-V105
80 7 43 VPF43. 100F90
S55266-V107
100
40
14.8
90
VPF43. 125F135
S55266-V109
125
23
135
VPF43. 150F200
S55266-V111
150
43
32
195
100
V
min
V
Example:
Product number
Stock number
Designation
VPF43.65F24
S55266-V102
Combi valve PN 16 with flanged connections
Delivery
Revision numbers
DN = nominal size
H
= nominal stroke
100
= volumetric flow through fully open valve (H
= smallest presettable volumetric flow through fully open valve (H
∆p
= minimum differential pressure required across the valve’s control path, so that the difference
min
100
)
)
100
pressure regulator works reliably
Ordering
Combi valves, actuators and accessories are packed and supplied separately.
The valves are supplied without counter-flanges and without flange gaskets.
Position feedback, forced control, change of flow characteristic
3)
Optional accessories: Auxiliary switch, sequence control, acting direction
4)
Voltage adapter required, order separately
5)
Selectable
6)
Position feedback
Page 4
Technical / mechanical design
1 Ring with dial for presetting
2 Aperture for the differential pressure
controller is linked with outlet port B
3 Differential pressure controller
4 Plug with variable presetting opening
5 Control valve
6 Pressure test point (P/T) at outlet port
B, blue ribbon, P-
7Pressure test point (P/T) at inlet port A,
red ribbon, P+
A Inlet port A
B Outlet port B
A Inlet medium (inlet port A)
B Outlet medium (outlet port B)
1 Ring with dial for presetting
3 Differential pressure controller
5 Control valve with mounted
actuator
P- = P/T port, pressure test point with blue ribbon (6)
P+ = P/T port, pressure test point with red ribbon (7)
p1 = pressure at inlet port A of Combi valve
p2 = pressure at outlet port of control valve (5)
p3 = pressure at outlet port B of Combi valve
1
2
3
4
5
B
67
4315Z01
A
Functional principle
The Combi valves VPF43.. combine three functions:
a control valve (5) for controlling the volumetric flow,
an adjusting mechanism (1, 4) with a dial for a presettable maximum volumetric
flow,
a differential pressure controller (3) for balancing pressure fluctuations in the
hydraulic system respectively across the control valve.
The mechanical series-connected differential pressure controller keeps the
differential pressure (p1 – p2) constant across the control valve and thus the set
volumetric flow too. The desired maximum volumetric flow can be preset with the
adjusting mechanism. The controller (not shown) and the actuator regulate the
volumetric flow and consequently the desired temperature in buildings, rooms or
zones.
The medium entering the Combi valve (inlet port A) first passes through the control
Product no.
Stock no.
Beschreibung
ALE10
ALE10
Electronic manometer excluding measuring lines and measuring tips.
Measuring range 0 .. 700 kPa. A differential pressure of more then
1000 kPa will destroy the pressure sensor.
For measuring the differential pressure between P+ and P- of the
Combi valves (refer to diagram under "Functional principle" on page 4).
Functions of the manometer:
Start/stop
Automatic zero position
Backlit display
Display: Out outside the measuring range
Holding function
ALE11
ALE11
Measuring lines and straight measuring tips for use with Siemens
Combi valves.
Equipped with G ⅛” connection with 2 x 40 mm needles.
ALP46
S55264-V115
Blanking plugs for P/T ports
Connection to valve body: G ¼“ to ISO 228, inclusive O-ring
ALP47
S55264-V116
Drain ball valve inclusive O-ring
Port: External threads G ½“ to ISO 228
Connection to valve body: G ¼“ to ISO 228, inclusive O-ring
ALP48
S55264-V117
Combined P/T port and drain ball valve with blue ribbon
Port: External threads G ⅛“ to ISO 228
Connection to valve body: G ¼” to ISO 228, inclusive O-ring
ALP49
S55264-V118
Long P/T ports (set of 2 pieces)
Set contains 1 piece each with a red and blue ribbon.
Port: External threads G ⅛“ to ISO 228
Connection to valve body: G ¼“ to ISO 228, inclusive O-ring
Medium flow
Pressure test points
Manual control
Advantages
valve (5) with a linear characteristic and a stroke of 20 mm (DN 50…80)
respectively 40 mm (DN 100…150). The actuator (not shown here) opens and
accurately positions the control valve. Then, the medium flows through the variable
presetting opening (4) which is connected to the ring with dial (1) for presetting the
desired maximum volumetric flow.
Before leaving the Combi valve (outlet port B), the medium passes through a built-
in mechanical differential pressure controller (3). This differential pressure
controller is the heart of the Combi valve and ensures that the selected volumetric
flow is maintained across the whole working range and independent of the inlet
pressure p1.
The Combi valve VPF43.. is equipped with two pressure test points (P+, P-) for
measuring and monitoring the differential pressure across the valve during
commissioning. For that purpose, the electronic manometer ALE10 can be used.
Manual control is only possible with mounted actuator.
The advantages of Combi valves are that:
once the flow limiter is set to design flow, the hydraulic circuit self balances,
even when changes to the system are made, such as additions.
for any heat demand the Combi valve with mounted actuator can be set to the
desired volumetric flow and will be relatively constant regardless of pressure
fluctuations in the system.
Constant flow regardless of pressure changes in the system reduces hydraulic
interdependence and leads to a more stable control.
Accessories
5 / 14
Siemens Combi valves PN 16 with flanged connections CE1N4315en
Building Technologies 2017-10-25
Page 6
Sizing
h
l
KT163.1
1000kWQ
V
hmhl
K
kW
/6.21/654'21
6163.1
1000150
V
3
Nominal flow
VPF43.50F16 16 m3/h nominal
[m3/h]
2.3
3
3.8
4.5
5.3 6 6.8
7.5
8.3 9 9.8
10.5
11.3
12
12.8
13.5
14.3
15
Dial
Min.
0.2
0.4
0.6
0.8 1 1.2
1.4
1.6
1.8 2 2.2
2.4
2.6
2.8 3 3.2
3.4
3.6
3.8 4 kPa 6.5
6.8
7.1
7.4
7.7
8.0
8.8
9.6
10.4
11.2
12.0
13.5
15.2
16.8
18.5
20
VPF43.65F24 24 m3/h nominal
[m3/h]
4.4
5.6
6.6
7.7
8.6
9.6
10.5
11.5
12.5
13.5
14.7
15.8
17.1
18.5
19.9
21.5
23.2
25
Dial
Min.
0.2
0.4
0.6
0.8 1 1.2
1.4
1.6
1.8 2 2.2
2.4
2.6
2.8 3 3.2
3.4
3.6
3.8
4
kPa 15
15.7
16.2
16.8
17.4
18.0
18.4
18.7
19.1
19.5
20.0
20.9
21.8
22.8
23.9
25
VPF43.80F35 35 m3/h nominal
[m3/h] 5.3
6.9
8.3
9.6
10.9
12.2
13.5
14.8
16.2
17.6
19.1
20.7
22.4
24.3
26.4
28.7
31.2
34
Dial
Min.
0.2
0.4
0.6
0.8 1 1.2
1.4
1.6
1.8 2 2.2
2.4
2.6
2.8 3 3.2
3.4
3.6
3.8 4 kPa 16
16.4
16.8
17.2
17.6
18.0
18.4
18.7
19.1
19.6
20.0
20.8
21.7
22.7
23.8
25
VPF43.100F70 70 m3/h nominal
[m3/h] 12.1
15
18
21
23
25
28
30
32
35
38
40
43
47
51
56
62
68
Dial
Min.
0.2
0.4
0.6
0.8 1 1.2
1.4
1.6
1.8 2 2.2
2.4
2.6
2.8 3 3.2
3.4
3.6
3.8 4 kPa 20.0
20.5
20.8
21.2
21.7
22.0
22.5
23.2
23.8
24.3
25.0
26.6
28.2
30.2
32.6
35
VPF43.125F110 110 m3/h nominal
[m3/h] 18.5
23
28
33
37
42
46
51
55
60
65
69
74
80
85
92
99
110
Dial
Min.
0.2
0.4
0.6
0.8 1 1.2
1.4
1.6
1.8 2 2.2
2.4
2.6
2.8 3 3.2
3.4
3.6
3,8
4
kPa 16.0
16.4
16.8
17.2
17.6
18.0
18.5
19.2
19.8
20.3
21.0
23.3
25.3
28.0
30.7
35
Engineering example
Volumetric flow/dial
presetting
Standard flow rate
Basis of design
1. Determine heat demand Q [kW]
2. Determine temperature spread ΔT [K]
3. Calculate volumetric flow
4. Select suitable Combi valve VPF43..
5. Determine dial setting using volumetric flow/dial presetting tables, see below.
Example
1. Heat demand Q = 150 kW
2. Temperature spread ∆T = 6 K
3. Volumetric flow
Hint: You can also determine the volumetric flow using the valve slide rule.
4. Select Combi valve VPF43..
Ideally, Combi valves should be selected such that they operate at about 80%
of their maximum flow, enabling them to deliver spare capacity, if required.
Siemens Combi valves PN 16 with flanged connections CE1N4315en
Building Technologies 2017-10-25
Page 8
Engineering notes
Valve
Symbols / Direction of flow
Flow in control mode
Valve stem
VPF43..
retracts
extends
Combi valve
variable
closes
opens
Symbol used in catalogs and application descriptions
Symbol used in diagrams
There are no standard symbols
for Combi valves in diagrams.
Symbol
Recommendation
Mounting positions
Mounting notes
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.
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!
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).
Using an open-end
wrench and turn the
stem with dial to the
desired presetting
position.
Volumetric flow V / V
100
Stroke H / H
100
Working pressure [bar]
Curve for
saturated steam;
steam forms
below this line
Medium temperature [°C]
Presetting
Valve characteristic
Working pressure
and medium
temperature
Fluids
It is recommended to mount the actuator before the presetting is made.
1. Mount actuator and fix valve neck coupling
2. Mount valve stem coupling and tighten slightly
3. Make presetting according to table under "Volumetric flow/dial presetting" on
page 6. Do NOT adjust presetting to a dial reading lower than “0.6”.
4. Tighten stem coupling
9 / 14
Siemens Combi valves PN 16 with flanged connections CE1N4315en
Building Technologies 2017-10-25
Working pressure and medium temperature staged as per ISO 7005
Current local legislation must be observed.
Page 10
Commissioning notes
Manual control
Sealing gland
Disposal
Maintenance notes
The valves must be commissioned with the actuator correctly fitted. Strong
pressure impacts can damage closed Combi valves.
The Combi valves have to be open when flushing or pressure testing the
system. Strong pressure impacts can damage closed Combi valves.
Differential pressure Δp
across the valve’s control path is not allowed to
max
exceed 600 kPa.
Only possible with mounted actuator.
The VPF43.. Combi valves are maintenance-free.
When performing service work on the valve 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. In case of leakage the whole valve
must be replaced.
Do not dispose of the device as household waste.
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.
Siemens warranty is void, if used with non-Siemens actuators.
Without CE-marking as per article 4, section 3
(sound engineering practice)1)
DN 65 - DN 150
Category I, module A, with CE-marking as per
article 14, section 2
Environmental compatibility
The product environmental declaration
CE1E4315en 2) contains data on
environmentally compatible product design and
assessments (RoHS compliance, materials
composition, packaging, environmental benefit,
disposal).
Materials
Valve body DN 50-80, 125
DN 100, 150
Gray cast iron GJL-250
Nodular cast iron GJS-400
Stem, spring
Stainless steel
Trim
Brass (DZR)
Regulator
Stainless steel
Seals
EPDM
1)
Valves where PS x DN < 1000, do not require special testing and cannot carry the CE label.
2)
The documents can be downloaded from http://siemens.com/bt/download.
11 / 14
Siemens Combi valves PN 16 with flanged connections CE1N4315en
Building Technologies 2017-10-25
Page 12
Dimensions / weight
Dimensions
Refer to "Dimensions" on page 12
Flange connections
To ISO 7005-2
Pressure test points (P/T-ports)
G ¼ inch (connection)
2 mm x 40 mm (measuring tips)
Weight
Refer to "Dimensions" on page 12
General ambient conditions
Operation
EN 60721-3-3
Transport
EN 60721-3-2
Storage
EN 60721-3-1
Environmental conditions
Class 3K5
Class 2K3
Class 1K3
Temperature
0…55 °C
-30...65 °C
-15...50 °C
Humidity
5...95 % r.h.
< 95 % r.h.
5...95 % r.h.
Application examples
DN 50 / DN 65
DN 80
Product
number
DN B Ø D
Ø D1
Ø D2
L1
L2
L3
Ø K
H1
H2
H
SAX..P
1)
SAV..P1)
SQV..P
VPF43..
50
16
165
99
19 (4x)
230
115
65
125
187.5
284
630
577
14
65
17
185
118
19 (4x)
290
145
84
145
195
291,5
637
584
19.5
80
17
200
132
19 (8x)
310
155
90.5
160
216.5
313
659
606
25
100
20
235
156
19 (8x)
350
162
111
180
332
449
800
720
50
125
25
270
184
19 (8x)
400
192
133
210
357
474
820
750
77
150
26
285
211
23 (8x)
480
230
156
240
401
521
870
790
111
Dimensions
It is recommended to use Combi valves in plants with variable speed pumps. When
sizing the pump, it must be made certain that the most critical branch or consumer
in the system – usually the remotest from the pump – gets enough pressure (pump
head).
Dimensions in mm, weight in kg
DN = Nominal size
H = Total actuator height plus minimum distance to the wall or the ceiling for mounting,
H1 = Dimension from the pipe center to install the actuator (upper edge)
H2 = Valve in the «OPEN» position means that the valve stem is fully extended.