Siemens VVP45 Series, VXP45.10-0.25, VVP45.10-0.4, VVP45.10-0.25, VVP45.10-0.63 Technical Instructions
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Technical Instruction
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Document No. CM1N4845E-P2
Rev. 4, February, 200
VVP45… and VXP45… Series
Two-port and Three-port Seat Valves
ANSI Class 250 Short-stroke Valves
Two-port Seat Valve
VVP45…
Description
Features
Two-port seat valves of the VVP45… range with two-port connection
Three-port seat valves of the VXP45… range with three-port connection
•
Nominal pressure, ANSI Class 250
•
Bronze valve bod y
•
1/2-inch, 3/4-inch and 1-inch diameters
Three-port Seat Valve
VXP45…
Application
Product Numbers
•
Externally threaded connections G 1/2-inch, G 3/4-inch and G 1-inch
•
Nominal stroke 5.5 mm
•
Manual adjusting knob
•
Can be fitted with SSB… or SSC… electric actuators
•
In ventilating and air conditioning applications to control, for water side, terminal
units in closed circuits, such as induction and fan coil units, small unit heaters and
small water-cooled units. For use in:
−
Two-pipe systems with one heat exchanger for heating and cooling
−
Four-pipe systems with two separate heat exchangers for heating and cooling
•
In heating applications to control heating zones in closed circuits, such as:
−
Self-contained heating systems
−
Apartments
−
Individual rooms
See Table 1.
Siemens Building Technologies, Inc.
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Technical Instructions VVP45… and VXP45... Series Two-port and Three-port Seat Valves
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Document Number CM1N4845E-P25 ANSI Class 250
Rev. 4, February, 2002
Fluids
Hot water: to maximum 230°F (110°C), short-term to maximum 248°F (120°C)
Chilled water: over 36°F (2°C)
Water-glycol solutions
Operating Pressure
Maximum 1600 kPa (16 bar) and ANSI Class 250
Table 1. Product Numbers.
Connectio
ISO Thread
GPM
Straight
through
VVP45…
(2-port)
∆
(ps
p
s
GPM
Bypass
Line Size
mm
(inch)
10 (.394) G 1/2-inch
1.1
1.8
2.8
4.4
7.0
15 (.5906) G 3/4-inch
20 (.7874
G 1-inch 17.6
∆
p = >29 psi increases risk of noise and seat-plug erosion
∆
p
s
∆
p
max
11.0
= Close-off pressure
= Maximum permissible differential pressure across closed valve with actuator
VVP45.10-0.25
VVP45.10-0.4
VVP45.10-0.63
VVP45.10-1
VVP45.10-1.6
VVP45.15-2.5
VVP45.20-4
87
0.79
1.23
1.90
3.08
4.93
58
58
7.71
12.33
Cv = Nominal flow at pressure drop of 1 psi
Ordering
When ordering, give quantity, product number and name of valve.
VXP45…
(3-port)
VXP45.10-0.25
VXP45.10-0.4
VXP45.10-0.63
VXP45.10-1
VXP45.10-1.6
VXP45.15-2.5
VXP45.20-4
p
∆
max
psi
Actuator
Positioning
Force
45lbf 67 lb
SSB SSC
29
Equipment
Combinations
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Siemens Building Technologies, Inc.
Example:
1 VXP45.10-1 three-port valve
Valves, actuators and screwed fittings are packed separately.
Valves V…45.10-0.25 to V…45.25-6.3 are operated with SSB actuators (see data shee
CA1N4891.1E-P25 and CA1N4891.2E-P25) or SSC actuators. Valves V…P45.25-10,
V…45.32-16 and V…P45.40-25 are only operated with SSC actuators.
Actuator
SSB61...
SSB81...
SSC61...
SSC81...
Operating
Voltage
24 Vac 0 to 10 Vdc
3-Point 150
0 to 10 Vdc
3-Point 150
Control Run Time
(Seconds
75 45 lbf 27.7
30 67 lbf 110
Positioning
Force
GPM
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VVVP445…and VXP45… Series Two-port and Three-port Seat Valves Technical Instructions
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ANSI Class 250 Document Number CM1N4845E-P25
Rev. 4, February, 2002
Sizing
Water Sizing Equation:
Q
=
v
∆
Where:
= Flow Coefficient
C
v
Q = Volumetric flow rate (gpm)
∆
p = Pressure drop, psi
Warning/Caution
Notations
Control
Characteristics
Engineering Notes
Recommendation
WARNING:
Personal injury, or loss of life may
occur if you do not follow the
procedures as specified.
CAUTION:
Equipment damage, or loss of data
may occur if you do not follow the
procedures as specified.
V
100
1
0,8
0,6
0,4
0,2
0
B
A
B
ABA
B
B
A
A
00,20,40,60,81
H
0
CAUTION:
Legend:
= Volumetric flow rate
V
100
H
0
= Valve stroke 0% = Path A → AB closed,
bypass B opened
H
100
= Valve stroke 100% = Path A → AB opened,
bypass B closed
Tor AB = Constant total flow from A and B → AB
Tor A = Variable flow in straight-through path
from A → AB
SVAL0067R1
Tor B = Variable flow in bypass-through port
from B → AB
H
100
The VXP45…can only be used as mixing valves.
Valves VVP45… and VXP4 5… are pref erably installed in the return, as this provid es
lower temperatures on the seals.
Provide strainer upstream of the valve inlet.
AB
A
AB
SVAL0069R1
Figure 1. VVP45.
Two-port valves VVP45…
Flow permissible only in direction
of arrow
valve body.
A
AB
from A → AB
= Variable flow in straight-
through port (outlet).
A
= Variable flow in straight through port (inlet).
Stem retracted: Path A → AB
arrow on
open.
Stem extended: Path A → AB
closed.
Siemens Building Technologies, Inc.
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Technical Instructions VVP45… and VXP45... Series Two-port and Three-port Seat Valves
Document Number CM1N4845E-P25 ANSI Class 250
Rev. 4, February, 2002
Engineering Notes
Recommendation,
Continued
Mounting Notes
Three-port valves VXP45…
Use as mixing valves only.
Mixing: flow from A
and B → AB.
AB
= Constant total flow
(outlet).
A
= Variable flow
A
B
= Variable flow B → AB
→
AB (inlet A).
in bypass (inlet B.)
Stem retracted: Path A
→
AB
SVAL0070R1
AB A
B
Figure 2. VXP45.
AB A
B
open, bypass B closed.
Stem extended: Path A
→
AB
closed, bypass B open.
Also see
SVAL0072R1
Mounting Notes
Permitted Not Permitted
Commissioning Notes.
and
Figure 3. Mounting Positions.
Commissioning
Notes
Manual Adjustment
Engineering Notes
See
for flow direction.
The valves are always supplied in a common package with installation instructions.
The valves are automatically closed by a return spring. The
A → AB
port valves,
of the valve is opened by adjusting the manual knob or actuator; with three-
bypass B
is throttled or closed. The manual adjusting knob only permits
straight-through port
opening to 70% (bypass 30% open)
Two-port valves VVP45…
Spindle retracts: throughport from A → AB opens
Valve spindle extends: throughport from A → AB closes.
Three-port valves VXP45…
Spindle retracts: throughport A → AB opens, bypass B closes
Valve spindle extends: throughport A → AB closes, bypass B opens.
WARNING:
Before performing any service work on the valve and/or actuator, do the
following:
1. Switch OFF pump and power supply.
2. Close the main shutoff valve of the piping system.
3. Release pressure and allow to cool down completely.
4. Disconnect electrical connections, if necessary, from terminals. Only
commission the valve using the preset manual adjusting knob or with
an actuator mounted in accordance with the relevant instructions.
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Siemens Building Technologies, Inc.
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VVVP445…and VXP45… Series Two-port and Three-port Seat Valves Technical Instructions
ANSI Class 250 Document Number CM1N4845E-P25
Rev. 4, February, 2002
= 2.2
gl
Specifications
Characteristics
Throughport A → AB n
(equal percentage, optimized for large
controllable range)
Bypass B linear
Leakage rate
Rangeability
Threaded connections
Pressure class
Nominal stroke
Valve materials
Weight
Throughport A → AB 0 to 0.01% of Cv
Bypass B 0 to 0.01% of Cv
See
Product Numbers
-value
s
-value
s
Valve ISO 228/1
Fitting ISO 7/1
ANSI Class 250
0.2 inch (5.5 mm)
Body Bronze
Spindle Stainless steel
Plug, seat , gland Brass
O-rings Special EPDM rubber
See
Dimensions
Siemens Building Technologies, Inc.
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Technical Instructions VVP45… and VXP45... Series Two-port and Three-port Seat Valves
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Document Number CM1N4845E-P25 ANSI Class 250
Rev. 4, February, 2002
Dimensions
All dimensions in
inches (millimeters)
H1
H3
H
Hmin
L3
B
D
SVAL0073R1
AB A
L2
L1
Figure 4. VVP45…
(2-port).
H
Hmin
H3
H1
D
B
SVAL0074R1
AB A
B
L2
L1
Figure 5. VXP45…
(3-port).
Table 2.
Two-port Seat Valves VVP45…
D Product
G 1/2"
G 3/4" VVP45.15-2.5 1.22
G 1" VVP45.20-4 1.42
Three-port Seat Valves VXP45...
G 1/2"
G 3/4" VXP45.15-2.5 1.22
G 1" VXP45.20-4 1.42
Number
VVP45.10-
0.25…1.6
VXP45.10-
0.25…1.6
B H Hmin H1 H3 L1
1.14
(29)
8.07
(205)
4.92
(125
1.77
(44.9)
≈
(54)
2.13
2.56
(31)
≈
(58)
≈
(54)
2.28
2.13
(36)
1.14
(29)
8.27
(210)
8.07
(205)
5.12
(130
4.92
(125
1.92
(48.9)
1.77
(44.9)
2.56
(31)
≈
(58)
2.28
(36)
8.27
(210)
5.12
(130
1.92
(48.9)
2.36
(60)
(65)
3.15
(80)
2.36
(60)
(65)
3.15
(80)
L2 L3
1.18
—
(30)
1.28
(32.5)
1.57
—
(40)
1.18
(30)
1.28
(32.5)
1.57
(40)
1.18
(32.5)
1.28
(32.5)
1.57
(40)
Information in this publication is based on current specifications. The company reserves the right to make c hanges i n specifications and models as
design improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respecti ve owners.
© 2002 Siemens Building Technologies, Inc.
Siemens Building Technologies, Inc.
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
U.S.A.
Your feedback is important to us. If you have
comments about this document, please send
them to technical.editor@sbt.siemens.com
Document No. CM1N4845E-P25
Printed in the U.S.A
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