∂ With integrated pressure differential controller
∂ Valve body made of nodular cast iron GJS-400-15
∂ 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
∂ For use in heating, ventilating and air conditioning systems, district heating, as a
= smallest presettable volumetric flow through fully open valve (H
V
min
∆p
= minimum differential pressure required across the valve’s control path, so that the difference
min
100
)
)
100
pressure regulator works reliably
%
V
100
∆p
See
page
6 + 7
See
page
6 + 7
Ordering
Example:
Delivery
Revision numbers
Product numberStock numberDesignation
VPF53.65F24S55266-V 114Combi valve PN 25 with flanged c onnections
Combi valves, actuators and accessories are packed and supplied separately.
The valves are supplied without counter-flanges and without flange gaskets.
See page 13
2 / 14
SiemensCombi valves PN 25 with flanged connectionsCE1N4316en
Building Technologies2018-04-18
= maximum permissible differential pressure across the valve’s contr ol path, valid for the entire
max
actuating range of the motorized valve
∆ps = maximum permissible differential pressure at which the motorized Combi valve will close
securely against the pressure (close off pressure
Actuator overview
TypeStock no.Stroke
S55150-A118
SAX61P03
SAX81P03
SQV91P40
SAV31P00 S55150-A121
SAV61P00 S55150-A119
S55150-A114
S55150-A1163-position--30 s
S55150-A130
S55150-A131
20 mm
20 mm
40 mm
40 mm 1100 N
Pos.
Operating
force
voltage
AC 230 V3-position
500 N
AC/DC 24 V
AC/DC 24 V
1100 N
AC 230 V
AC 230 V
AC/DC 24 V
1)
Optional accessories: Auxiliary s witch, potentiometer
2)
Position f eedback, 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
Positioning
signal
DC 0…10 V
DC 4…20 mA
0…1000 Ω
3-position
DC 0…10 V
4)
DC 4…20 mA
3-position
DC 0…10 V
DC 4…20 mA
0…1000 Ω
3-position--
Spring return
return
direction
time
--30 s
Pull to open
or
30 s
push to close
5)
-
-
-
Pos. time LED
< 120 s
120 s
Manual
adjuster
Push and
fix
Ο
Push and
fix
5)
Turn and
Ο
fix
-
Push and
Ο
fix
Extra
functions
2),3)
1)
1),6)
1)
2), 3)
1)
3 / 14
SiemensCombi valves PN 25 with flanged connectionsCE1N4316en
Building Technologies2018-04-18
Technical / mechanical design
1
Ring with dial for presetting
1
2
345
B
6
4
315Z0
1
7
2 Aperture for the differential pressure
controller is linked with outlet port B
3 Differential pressure controller
4 Plug with variable presetting opening
A
Functional principle
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
The Combi valves VPF53.. 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.
A Inlet medium (inlet port A)
B Outlet medium ( outlet port B)
1 Ring with dial for presetting
3 Differential press ure controller
5 Control valve with mounted
act uat or
4 / 14
SiemensCombi valves PN 25 with flanged connectionsCE1N4316en
Building Technologies2018-04-18
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
∂
Medium flow
Pressure test points
The medium entering the Combi valve (inlet port A) first passes through the control
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 VPF53.. 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
Advantages
Accessories
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.
Product no. Stock no.Beschreibung
Electronic manometer excluding measuring lines and measuring tips.
For measur ing the differential pressure between P+ and P- of the
Combi valves (refer to diagram under "Functional principle" on page 4).
Measuring range 0 ... 700 kPa. A differential pressure
of more than 1000 kPa will destroy the pr essure sens or.
ALE10ALE10
Functions of the manometer:
∂ Start/stop
∂ Automatic zero position
∂ Backlit display
∂ Display: Out ⇓ outside the measuring range
Holding function
Measuring lines and straight measur ing tips for use with Siemens
ALE11ALE11
Combi valves.
Equipped with G ⅛” c onnection with 2 x 40 mm needles.
ALP46S55264-V115
ALP47S55264-V116
ALP48S55264-V117
LP49S55264-V118
SiemensCombi valves PN 25 with flanged connectionsCE1N4316en
Building Technologies2018-04-18
Blanking plugs for P/T ports
Connection to valve body: G ¼“ to ISO 228, inclusive O-ring
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
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
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
5 / 14
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