Honeywell VPI Series User manual

VPI PRESSURE INDEPENDENT
CONTROL VALVES AND ACTUATORS
INSTALLATION INSTRUCTION
® U.S. Registered Trademark.
Copyright © 2020 Honeywell Inc. All Rights Reserved. Printed in USA 31-00383-01, Rev A.
APPLICATION
Honeywell pressure independent control valve (PICV) is
used in heating and cooling systems in applications
with Air Handling Units, Fan Coil Units, chilled ceilings,
zone control, or other terminal unit applications.
Honeywell VPI series provides modulating control with
full authority regardless of any fluctuations in the
differential pressure of the system. Honeywell VPI
series combines an externally adjustable automatic
balancing valve, a differential pressure control valve,
and a full authority modulating control valve.
Honeywell VPI series makes it simple to achieve 100%
control of the water flow in the building while creating
high comfort and energy savings at the same time. An
additional benefit is that no balancing is required if
further stages are added to the system, or if the
dimensioned capacity is changed. Energy-saving due
to optimal control, lower flow, and pump pressure.
Maximized ΔT due to faster response and increased
system stability
Application Notes
Valve sizing is important for correct system operation.
Undersized valves do not have sufficient capacity at
maximum load.
Proper Use
These valves are intended for use in chilled water and
hot water closed-loop applications only, with a media
temperature range of -20ºC to +120ºC (-4ºF to
+248ºF), and static pressures up to 580psi. Not
suitable for oil, combustible gases, or high-
temperature steam.
These valves are to be operated with the appropriate
and compatible Honeywell actuators only. Refer VPI
series PICV Product Datasheets for more details on
valve and actuators compatibility.
Water should be properly filtered, treated, and
conditioned for good operating performance, and
according to according to VDI 2035 with up to 50 %
Glycol (oxygen concentration less than 0.2 g/m3, pH
8...9.5; Fe<0.5 mg/kg; Cu<0.1 mg/kg). The installation
of strainers and filters is recommended. Do not use
manual balancing valves.
IMPORTANT: The presence of excessive iron oxide
(red rust) in the system voids the valve warranty.
Effective Flow Rate
The built-in differential pressure regulator makes fluid
flow through the valve independent of changes in
supply. The pressure regulator virtually eliminates
cavitation in the valve and decouples the control valve
from the effects of piping components such as
reducers and elbows.
Pressure independent control valves are sized to match
design coil flow regardless of coil connection size.
These valves eliminate the need to balance the system
for proper flow and allow chillers to be operated at
design temperature differential for maximum
efficiency at every load condition.
Flow Characteristic
The VPI series Pressure Independent Control Valves
have: Linear flow characteristic and can be converted
to an equal percentage in the actuator.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 2
DECLARATION OF REACH CONFORMITY
Article 33 Communication
REGULATION (EC) NO 1907/2006 [REACH]
According to Article 33 of Reach Regulation be informed that these products may contain lead (CAS: 7439-92-1) up
to 2.0-2.5% in any brass used in valve housings, headnuts, p/t plugs, flushing caps etc.
PREREQUISITE
When installing this product...
1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous
condition.
2. Check ratings given in instructions and on the product to ensure the product is suitable for your application.
3. The installer must be a trained, experienced service technician.
4. After installation is complete, check out product operation as provided in these instructions.
Preparation
CAUTION
Equipment Damage Hazard
Foreign particles like dirt and metal chips can damage the valve seat and diaphragm.
For trouble-free operation of the product, good installation practice must include initial system flushing and chemical
water treatment. Clean the lines upstream of particles larger than 1/16 inch diameter (welding slag, pipe scale, sand,
and other suspended particulate).
Do not use boiler additives, solder flux, and wetted materials which are petroleum-based or contain mineral oil,
hydrocarbons, or ethylene glycol acetate. Compounds that can be used, with a minimum 50% water dilution, are
diethylene glycol, ethylene glycol, and propylene glycol (antifreeze solutions).
If installing these valves in an addition to, or retrofitting an existing building, do not assume that the fluid in the existing
piping meets these criteria.
1. Before installing the valves, flush the system.
2. It is recommended to install strainers in front of the valves to protect against clogging due to foreign particles.
Strainer baskets should be installed, checked and cleaned as required during flushing and normal operation.
3. Use clean water according to the guidelines in VDI 2035. VDI 2035 recommends water quality as per
conductance value <100 μS/cm, oxygen content of up to 0.1 mg/l, pH of 8.2-10.0 and requires low turbidity
<1FTU and consequently low content of alkaline earths.
4. It is recommended to treat water with chemical to achieve required water quality. If using any additives, please
contact Honeywell for guidance.

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
3 31-00383-01
MECHANICAL INSTALLATION
Installation for DN15-32
IMPORTANT: Hold valve with a pipe wrench by
hexagonal fitting ONLY. Do NOT handle the valve
body with the pipe wrench; product damage may
result.
Refer VPI series PICV Product Datasheets for more
details on valve and actuator dimensions.
1. Clean the lines upstream of particles larger than
1/16 in. diameter (welding slag, pipe scale and
other contaminants) to properly flush the system.
2. Proceed with installation once the system
specifics (expansion/contraction of the system
and its medium as well as operating pressures) are
within tolerances.
3. Eliminate air from the system.
4. See, Figure 1 to familiarize yourself with the valve
and its components. The Valve body (D) is the
housing marked with an arrow to show flow
direction. The Flow regulator (C) which is pre-
installed in valve body, regulates flow. Pressure
ports (A) facilitates user to gauge pressure across
ends. The Plugs (B) comes with valve models
without pressure ports. See VPI series PICV
Product Datasheets for details on models with and
without pressure ports.
Figure 1. DN15-32 Valve Components
IMPORTANT: Flow arrow must point in the direction
of the flow for proper operation. Valves must be
installed avoiding unnecessary pull or twist in the
valve housing.
5. Install the valve housing with the flow directional
arrow pointing in the correct direction.
6. For threaded connections please clear threads on
both valve and piping of debris. Honeywell
recommends thread or pipe sealant (Permabond
A1044 or equivalent). When using Teflon tape, it is
recommended to use 4-6 rounds of tape applied
tightly in clockwise rotation. When using hemp as
pipe sealant, ensure no strands are left in the valve
or piping.
Flow Setting
The Flow regulator is provisioned with dial with scale
settings to allow user to set desired flow rate. For more
information about flow rate as per dial settings, see
Table 1. Flow Chart for DN15-32. The procedure for
scale setting is as follows:
1. Set the desired flow rate by adjusting scale setting
of the dial with a special adjustment key.
Figure 2 Flow Setting
2. For DN15/20 (LF) and DN32 valve models, large
white digits, numbered 1 to 5, indicate full turns
and digits from small sub-dial, numbered 0 to 9,
indicate 1/10 of full turn.
Figure 3 Dial Gauge for DN 15/20 (LF) and DN32
3. For DN15/20/25 (HF) valve models, scale is
opposite. Here large white digits, numbered 0 to 9,
indicate 1/10 of full turn and small digits from
sub-dial, numbered 0 to 5, indicate full turn.
Figure 4 Dial Gauge 3. For DN15/20/25 (HF)
4. Install the compatible and required actuator as per
application and/or system design. See Installation
of Actuators compatible with DN 15-50 for more
details on how to install the actuator.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 2
Flow Setting Chart for DN 15 -32
Table 1. Flow Chart for DN15-32
DN15LF-DN20LF
DN15HF-DN25HF
DN32
Setting
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
0.0178
64
0.282
-
-
-
0.240
865
3.81
1.0
0.0393
142
0.624
-
-
-
0.282
1010
4.46
1.1
0.0580
209
0.920
-
-
-
0.322
1160
5.10
1.2
0.0743
268
1.180
-
-
-
0.361
1300
5.72
1.3
0.0887
319
1.41
-
-
-
0.399
1430
6.32
1.4
0.102
366
1.61
0.172
620
2.73
0.435
1570
6.90
1.5
0.113
408
1.80
0.200
720
3.17
0.471
1700
7.47
1.6
0.124
446
1.96
0.228
820
3.61
0.506
1820
8.02
1.7
0.134
482
2.12
0.258
930
4.10
0.540
1940
8.56
1.8
0.143
516
2.27
0.294
1060
4.67
0.573
2060
9.08
1.9
0.152
549
2.42
0.325
1170
5.15
0.605
2180
9.59
2.0
0.161
580
2.56
0.350
1260
5.55
0.636
2290
10.1
2.1
0.170
611
2.69
0.375
1350
5.95
0.667
2400
10.6
2.2
0.178
641
2.82
0.396
1430
6.28
0.696
2510
11.0
2.3
0.186
671
2.95
0.417
1500
6.61
0.725
2610
11.5
2.4
0.194
700
3.08
0.439
1580
6.96
0.753
2710
11.9
2.5
0.202
728
3.21
0.458
1650
7.27
0.780
2810
12.4
2.6
0.210
756
3.33
0.481
1730
7.62
0.807
2900
12.8
2.7
0.218
783
3.45
0.500
1800
7.93
0.832
3000
13.2
2.8
0.225
810
3.56
0.522
1880
8.28
0.858
3090
13.6
2.9
0.232
835
3.68
0.542
1950
8.59
0.882
3180
14.0
3.0
0.239
860
3.79
0.550
1980
8.72
0.906
3260
14.4
3.1
0.245
883
3.89
0.558
2010
8.85
0.930
3350
14.7
3.2
0.252
906
3.99
0.567
2040
8.99
0.953
3430
15.1
3.3
0.257
927
4.08
0.575
2070
9.12
0.975
3510
15.5
3.4
0.263
946
4.17
0.583
2100
9.25
0.997
3590
15.8
3.5
0.268
965
4.25
0.597
2150
9.47
1.02
3670
16.1
3.6

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
3 31-00383-01
Replacement of Flow regulator
The Flow regulator are engineered and designed with more life span. Follow below procedures in case if the old flow
regulator needs replacement with the new one.
Procedure to remove the Flow Regulator
The procedure to remove Flow Regulator is as follows:
1. Remove the installed actuator (if any) as stated in Procedure to remove the Actuator.
2. Isolate the valve.
3. Use the pipe wrench or appropriate tool to rotate Flow Regulator in counterclockwise direction to remove from the
valve body. See Figure 5.
Figure 5. Removing Flow regulator from Valve body
Procedure to install the Flow Regulator
The procedure to install Flow Regulator is as follows:
1. Prior to installing the Flow regulator, the system should be properly flushed.
2. Insert the Flow Regulator in valve body and rotate with the pipe wrench or appropriate tool in Clockwise direction
to fit flow regulator in valve body. Follow the reverse sequence of steps shown in Figure above.
3. Open isolation valves slowly. Fast opening of isolation valves under high pressure may cause damage to the seat
or diaphragm of the Flow regulator.
4. Set the desired flow rate by adjusting the Flow Regulator with special adjustment key.
5. Install the actuator as stated in Procedure to install the Actuator.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 2
Installation for DN40-50
IMPORTANT: Hold valve with a pipe wrench by hexagonal fitting ONLY. Do NOT handle the valve body with the pipe
wrench; product damage may result.
Refer VPI series PICV Product Datasheets for more details on valve and actuator dimensions.
The procedure to install DN 40-50 valve is as follows:
1. Clean the lines upstream of particles larger than 1/16 in. diameter (welding slag, pipe scale and other
contaminants) to properly flush the system.
2. Proceed with installation once the system specifics (expansion/contraction of the system and its medium as well
as operating pressures) are within tolerances.
3. Eliminate air from the system.
4. See Figure 6 to familiarize yourself with the valve and its components. The Valve Body (A) is the housing marked
with an arrow to show flow direction. The Flow Regulator (B) which is fixed with valve body, regulates flow.
IMPORTANT: Do not disassemble or attempt to remove the Flow regulator from the valve body. Doing so may
damage the valve and will void warranty.
Pressure ports (C) facilitates user to gauge pressure across ends. The Plugs (D) comes with valve models without
pressure ports. See VPI series PICV Product Datasheets for more details on models with and without pressure
ports.
Figure 6 DN40-50 Valve Components
IMPORTANT: Flow arrows must point in the direction of the flow for proper operation.
5. Install the valve housing with the flow directional arrow pointing in the correct direction.
6. For threaded connections please clear threads on both valve and piping of debris. Honeywell recommends thread
or pipe sealant (Permabond A1044 or equivalent). When using Teflon tape, it is recommended to use 4-6 rounds
of tape applied tightly in clockwise rotation. When using hemp as pipe sealant, ensure no strands are left in the
valve or piping.
IMPORTANT: Never use mineral oil or petrol-based grease or oil on the O-rings.
7. Set the desired flow rate by adjusting scale setting of the dial with a special adjustment key.

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
3 31-00383-01
Flow Setting for DN40-50
The Flow regulator is provisioned with dial with scale settings to allow user to set desired flow rate. For more
information about flow rate as per dial settings, see Table 2. Flow Settings Chart for DN40-50. The procedure for scale
setting is as follows:
1. Set the desired flow rate by adjusting scale setting of the dial with a special adjustment key.
Figure 7 Flow setting for DN 40- 50
2. For DN40/50, large white digits numbered 1 to 5 including in-between positions showed by dots (one dot for
every 0.1 positions). The specific position is defined by a sign mark on top of the housing.
Figure 8 Dial Gauge for DN 40- 50
3. Install the compatible and required actuator as per application and/or system design.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 4
Flow Setting Chart for DN40 –DN50
Table 2. Flow Settings Chart for DN40-50
DN40-DN50
Setting
l/sec
l/hr
GPM
0.528
1900
8.36
1.0
0.633
2278
10.0
1.1
0.738
2655
11.7
1.2
0.843
3033
13.3
1.3
0.947
3410
15.0
1.4
1.05
3787
16.7
1.5
1.16
4163
18.3
1.6
1.26
4537
20.0
1.7
1.36
4909
21.6
1.8
1.47
5279
23.2
1.9
1.57
5646
24.8
2.0
1.67
6011
26.4
2.1
1.77
6372
28.0
2.2
1.87
6730
29.6
2.3
1.97
7083
31.2
2.4
2.06
7432
32.7
2.5
2.16
7776
34.2
2.6
2.25
8115
35.7
2.7
2.35
8449
37.2
2.8
2.44
8777
38.6
2.9
2.53
9098
40.0
3.0
2.61
9413
41.4
3.1
2.70
9721
42.8
3.2
2.78
10021
44.1
3.3
2.86
10314
45.4
3.4
2.94
10599
46.6
3.5
3.02
10875
47.8
3.6
3.10
11142
49.0
3.7
3.17
11400
50.2
3.8
3.24
11649
51.3
3.9
3.30
11888
52.3
4.0
3.37
12116
53.3
4.1
3.43
12334
54.3
4.2
3.48
12540
55.2
4.3
3.54
12735
56.0
4.4
3.59
12919
56.8
4.5
3.64
13090
57.6
4.6
3.68
13249
58.3
4.7
3.72
13395
58.9
4.8
3.76
13527
59.5
4.9
3.79
13647
60.0
5.0

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
5 31-00383-01
Installation of DN50-250
IMPORTANT: Hold threaded valve with a pipe wrench by hexagonal fitting ONLY. Do NOT handle the valve body with
the pipe wrench; product damage may result.
Refer VPI series PICV Product Datasheets for more details on valve and actuator dimensions.
The procedure to install for DN 50 –250 is as follows:
1. Clean the lines upstream of particles larger than 1/16 in. diameter (welding slag, pipe scale, and other
contaminants) to properly flush the system.
2. Proceed with installation once the system specifics (expansion/contraction of the system and its medium as well
as operating pressures) are within tolerances.
3. Eliminate air from the system.
4. Valves are marked to show flow direction, see Figure 9. Install the valve housing with the flow directional arrow
pointing in the correct direction.
Figure 9. Flow direction icon on DN50-250 valve
IMPORTANT: Flow arrows must point in the direction of the flow for proper operation.
5. Valves must be installed avoiding unnecessary pull or twist in the valve housing.
6. For flanged connections make sure if both flange surfaces are clear.
7. Flange ends are compatible with DIN steel flanges PN10, PN16, PN25, and/or PN40 according to EN1092-1 or
ANSI steel flanges class 150 and/ or 300 according to ASME B16.5. depending on the product ordered. Flanges
are not supplied by Honeywell.
See VPI series PICV Product Datasheets for more details on the flange selection of DN50-250 valves.
8. O-rings are supplied with the valve body and are used to seal connections. It is recommended to grease O-rings
with silicone grease.
IMPORTANT: Never use mineral oil or petrol-based grease or oil on the O-rings.
9. Please make sure these are properly placed in O-ring grooves on valve inlet and outlet, before installing the
housing.
10. Please note that DN200-250 (8”-10”) contains two O-ring grooves. Use the inner groove for DN200 / 8” flanges
and outer groove for DN250 / 10” flanges.
Figure 10. Groove location on DN200-250 valve
Install the compatible and required actuator as per application and/or system design. See Installation of Actuators
compatible with DN50 –250 for more details on how to install the actuator.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 6
Flow Setting Chart for DN50-100
Table 3. Flow Setting Chart for DN50-100
DN50
DN65
DN80LF
DN80HF
DN100LF
DN100HF
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
2.57
9240
40.7
2.57
9240
40.7
3.55
12800
56.3
4.73
17000
75.0
4.73
17000
75.0
3.68
13300
58.3
2.81
10100
44.6
2.81
10100
44.6
3.85
13900
61.0
5.29
19000
83.8
5.29
19000
83.8
4.42
15900
70.0
3.05
11000
48.3
3.05
11000
48.3
4.13
14900
65.5
5.82
21000
92.3
5.82
21000
92.3
5.13
18500
81.3
3.27
11800
51.9
3.27
11800
51.9
4.41
15900
69.9
6.33
22800
100
6.33
22800
100
5.82
21000
92.3
3.49
12500
55.2
3.49
12500
55.2
4.67
16800
74.0
6.82
24500
108
6.82
24500
108
6.50
23400
103
3.69
13300
58.4
3.69
13300
58.4
4.92
17700
78.0
7.28
26200
115
7.28
26200
115
7.15
25700
113
3.88
14000
61.5
3.88
14000
61.5
5.16
18600
81.7
7.72
27800
122
7.72
27800
122
7.78
28000
123
4.06
14600
64.3
4.06
14600
64.3
5.38
19400
85.3
8.14
29300
129
8.14
29300
129
8.40
30200
133
4.23
15200
67.0
4.23
15200
67.0
5.60
20200
88.8
8.54
30700
135
8.54
30700
135
8.99
32400
142
4.39
15800
69.6
4.39
15800
69.6
5.81
20900
92.1
8.91
32100
141
8.91
32100
141
9.57
34400
152
4.54
16300
72.0
4.54
16300
72.0
6.01
21600
95.2
9.27
33400
147
9.27
33400
147
10.1
36400
160
4.68
16900
74.2
4.68
16900
74.2
6.19
22300
98.2
9.61
34600
152
9.61
34600
152
10.7
38400
169
4.82
17300
76.4
4.82
17300
76.4
6.37
22900
101
9.93
35700
157
9.93
35700
157
11.2
40200
177
4.94
17800
78.4
4.94
17800
78.4
6.54
23600
104
10.2
36800
162
10.2
36800
162
11.7
42100
185
5.06
18200
80.2
5.06
18200
80.2
6.71
24100
106
10.5
37800
167
10.5
37800
167
12.2
43800
193
5.17
18600
82.0
5.17
18600
82.0
6.86
24700
109
10.8
38800
171
10.8
38800
171
12.6
45500
200
5.28
19000
83.7
5.28
19000
83.7
7.00
25200
111
11.0
39700
175
11.0
39700
175
13.1
47100
207
5.38
19400
85.2
5.38
19400
85.2
7.14
25700
113
11.3
40500
178
11.3
40500
178
13.5
48700
214
5.47
19700
86.6
5.47
19700
86.6
7.28
26200
115
11.5
41300
182
11.5
41300
182
13.9
50200
221
5.55
20000
88.0
5.55
20000
88.0
7.40
26600
117
11.7
42000
185
11.7
42000
185
14.3
51600
227
5.63
20300
89.2
5.63
20300
89.2
7.52
27100
119
11.9
42700
188
11.9
42700
188
14.7
53000
233
5.70
20500
90.4
5.70
20500
90.4
7.63
27500
121
12.0
43400
191
12.0
43400
191
15.1
54300
239
5.77
20800
91.5
5.77
20800
91.5
7.74
27900
123
12.2
43900
194
12.2
43900
194
15.4
55600
245
5.84
21000
92.5
5.84
21000
92.5
7.84
28200
124
12.4
44500
196
12.4
44500
196
15.8
56800
250
5.90
21200
93.5
5.90
21200
93.5
7.94
28600
126
12.5
45000
198
12.5
45000
198
16.1
58000
255
5.96
21400
94.4
5.96
21400
94.4
8.03
28900
127
12.6
45500
200
12.6
45500
200
16.4
59100
260
6.01
21600
95.2
6.01
21600
95.2
8.12
29200
129
12.7
45900
202
12.7
45900
202
16.7
60200
265
6.06
21800
96.0
6.06
21800
96.0
8.20
29500
130
12.9
46300
204
12.9
46300
204
17.0
61200
269
6.10
22000
96.8
6.10
22000
96.8
8.28
29800
131
13.0
46700
205
13.0
46700
205
17.3
62100
274
6.15
22100
97.5
6.15
22100
97.5
8.36
30100
133
13.1
47000
207
13.1
47000
207
17.5
63000
278
6.19
22300
98.2
6.19
22300
98.2
8.44
30400
134
13.1
47300
208
13.1
47300
208
17.8
63900
281
6.23
22400
98.8
6.23
22400
98.8
8.51
30600
135
13.2
47600
209
13.2
47600
209
18.0
64700
285
6.27
22600
99.4
6.27
22600
99.4
8.58
30900
136
13.3
47800
210
13.3
47800
210
18.2
65500
288
6.31
22700
101
6.31
22700
101
8.65
31100
137
13.4
48100
212
13.4
48100
212
18.4
66200
292
6.35
22900
101
6.35
22900
101
8.72
31400
138
13.4
48300
213
13.4
48300
213
18.6
66900
295
6.39
23000
101
6.39
23000
101
8.78
31600
139
13.5
48500
214
13.5
48500
214
18.8
67600
297
6.42
23100
102
6.42
23100
102
8.85
31900
140
13.5
48700
214
13.5
48700
214
18.9
68200
300
6.46
23300
102
6.46
23300
102
8.91
32100
141
13.6
48800
215
13.6
48800
215
19.1
68700
303
6.50
23400
103
6.50
23400
103
8.98
32300
142
13.6
49000
216
13.6
49000
216
19.2
69200
305
6.54
23500
104
6.54
23500
104
9.04
32600
143
13.7
49200
217
13.7
49200
217
19.4
69700
307
6.58
23700
104
6.58
23700
104
9.11
32800
144
13.7
49300
217
13.7
49300
217
19.5
70200
309
6.62
23800
105
6.62
23800
105
9.18
33000
145
13.7
49500
218
13.7
49500
218
19.6
70600
311
6.67
24000
106
6.67
24000
106
9.25
33300
147
13.8
49600
218
13.8
49600
218
19.7
70900
312
6.72
24200
106
6.72
24200
106
9.32
33500
148
13.8
49800
219
13.8
49800
219
19.8
71300
314
6.77
24400
107
6.77
24400
107
9.39
33800
149
13.9
49900
220
13.9
49900
220
19.9
71600
315

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
7 31-00383-01
DN50
DN65
DN80LF
DN80HF
DN100LF
DN100HF
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
6.82
24600
108
6.82
24600
108
9.46
34100
150
13.9
50100
220
13.9
50100
220
20.0
71900
316
6.88
24800
109
6.88
24800
109
9.54
34300
151
14.0
50200
221
14.0
50200
221
20.0
72100
317
6.94
25000
110
6.94
25000
110
9.62
34600
153
14.0
50400
222
14.0
50400
222
20.1
72300
318
Flow Setting Chart for DN125-DN250 PICVs
Table 4. Flow Setting Chart for DN125-250
DN125LF
DN125HF
DN150LF
DN150HF-DN250
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
l/sec
l/hr
GPM
6.48
23300
103
7.10
25600
113
7.10
25600
113
9.21
33100
146
57.5
207000
911
7.24
26100
115
8.06
29000
128
8.06
29000
128
9.69
34900
154
58.3
210000
924
7.98
28700
126
8.98
32300
142
8.98
32300
142
10.2
36800
162
59.1
213000
936
8.70
31300
138
9.87
35500
157
9.87
35500
157
10.8
38900
171
59.8
215000
948
9.39
33800
149
10.7
38600
170
10.7
38600
170
11.5
41200
182
60.6
218000
960
10.1
36200
160
11.6
41600
183
11.6
41600
183
12.1
43700
192
61.3
221000
972
10.7
38600
170
12.4
44500
196
12.4
44500
196
12.9
46300
204
62.0
223000
983
11.4
40900
180
13.1
47300
208
13.1
47300
208
13.6
49100
216
62.7
226000
994
12.0
43100
190
13.9
50000
220
13.9
50000
220
14.5
52000
229
63.4
228000
1000
12.6
45200
199
14.6
52600
232
14.6
52600
232
15.3
55100
242
64.0
230000
1010
13.1
47300
208
15.3
55100
243
15.3
55100
243
16.2
58200
256
64.6
233000
1020
13.7
49300
217
16.0
57500
253
16.0
57500
253
17.1
61500
271
65.2
235000
1030
14.2
51200
226
16.6
59800
264
16.6
59800
264
18.0
64900
286
65.8
237000
1040
14.8
53100
234
17.2
62100
273
17.2
62100
273
19.0
68400
301
66.4
239000
1050
15.3
54900
242
17.8
64200
283
17.8
64200
283
20.0
71900
317
66.9
241000
1060
15.7
56600
249
18.4
66300
292
18.4
66300
292
21.0
75600
333
67.4
243000
1070
16.2
58300
257
19.0
68300
301
19.0
68300
301
22.0
79300
349
68.0
245000
1080
16.6
59900
264
19.5
70200
309
19.5
70200
309
23.1
83100
366
68.4
246000
1080
17.1
61500
271
20.0
72100
317
20.0
72100
317
24.1
86900
383
68.9
248000
1090
17.5
63000
277
20.5
73800
325
20.5
73800
325
25.2
90800
400
69.4
250000
1100
17.9
64400
284
21.0
75500
333
21.0
75500
333
26.3
94700
417
69.8
251000
1110
18.3
65800
290
21.4
77200
340
21.4
77200
340
27.4
98700
435
70.2
253000
1110
18.6
67100
295
21.9
78700
347
21.9
78700
347
28.5
103000
452
70.6
254000
1120
19.0
68300
301
22.3
80200
353
22.3
80200
353
29.6
107000
470
71.0
256000
1130
19.3
69500
306
22.7
81700
360
22.7
81700
360
30.8
111000
488
71.4
257000
1130
19.6
70700
311
23.1
83100
366
23.1
83100
366
31.9
115000
506
71.8
258000
1140
19.9
71700
316
23.4
84400
372
23.4
84400
372
33.0
119000
523
72.1
260000
1140
20.2
72800
320
23.8
85700
377
23.8
85700
377
34.2
123000
541
72.5
261000
1150
20.5
73800
325
24.1
86900
383
24.1
86900
383
35.3
127000
559
72.8
262000
1150
20.7
74700
329
24.5
88100
388
24.5
88100
388
36.4
131000
577
73.2
263000
1160
21.0
75600
333
24.8
89200
393
24.8
89200
393
37.5
135000
595
73.5
265000
1170
21.2
76400
336
25.1
90300
398
25.1
90300
398
38.6
139000
613
73.8
266000
1170
21.4
77200
340
25.4
91400
402
25.4
91400
402
39.8
143000
630
74.2
267000
1180
21.6
77900
343
25.7
92400
407
25.7
92400
407
40.9
147000
648
74.5
268000
1180
21.8
78600
346
25.9
93400
411
25.9
93400
411
41.9
151000
665
74.8
269000
1190
22.0
79200
349
26.2
94300
415
26.2
94300
415
43.0
155000
682
75.1
270000
1190
22.2
79800
351
26.5
95200
419
26.5
95200
419
44.1
159000
699
75.5
272000
1200

VPI Pressure Independent Control Valves & Actuators
31-00383-01 8
Control Curve of Flow
Figure 11. Control curve of flow from MR series actuators

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
9 31-00383-01
Installation of Actuators compatible with DN 15-50
IMPORTANT: Do not connect power to the actuator unless the actuator is already fitted on the valve and NEVER
install the actuator in a closed position this may damage the valve.
IMPORTANT: The actuator is supplied in an open position to ensure the easy commissioning of the system.
Procedure to install the Actuator
The procedure to install the actuator is as follow:
1. Install the valve body.
2. Mount the actuator on the valve as per the directions shown below.
Figure 12. Assembly direction of an actuator on valve (example)
3. Tighten the connection union as shown below. Do not use additional tools as it may damage the actuator.
Mounting Position
The actuators can be mounted in any position (IP54 is dependent upon orientation; see Figure 13). Choose a mounting
position permitting easy access to cables and controls. To guarantee IP54, upside-down installation is only
recommended.
Figure 13. Actuator mounting for IP54
Procedure to remove the Actuator
1. Electrically open the actuator by activating DIP switch #6 for easier removal.
2. Hereafter finger loosen the connection union. Do not use additional tools as it may damage the actuator.
IMPORTANT: Please make sure that the actuator is electrically opened, before re-fitting it on the valve.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 10
Installation of Thermoelectric Actuators (MLP41TNA and MLP71TNA)
IMPORTANT: Do not connect power to the actuator unless the actuator is already fitted on the valve and NEVER
install the actuator in a closed position this may damage the valve.
IMPORTANT: The actuator is supplied in an open position to ensure the easy commissioning of the system.
Procedure to install the Actuator
The procedure to install the actuator is as follow:
1. Install the valve body.
2. The MLP41TNA and MLP71TNA (Thermoelectric) actuators are supplied with a separate black adaptor ring.
3. Mount the adaptor ring on top of the valve and finger tighten. Do not use additional tools.
The MLP71TNA comes with plug-in cable. Make sure that the cable is properly fitted next.
4. The actuator can now be fitted on the adaptor ring. A click noise will indicate that the actuator is correctly fitted as
shown below.
Figure 14. Installation of thermoelectric actuator on valve (example)
Mounting Position
The actuators can be mounted in any position (IP54 is dependent upon orientation; see Figure 15). Choose a mounting
position permitting easy access to cables and controls. To guarantee IP54, upside-down installation is only
recommended.
Figure 15. Actuator mounting for IP54
Procedure to remove the Actuator
1. Activate the release mechanism. Push the front button and removed the actuator from the adaptor ring.
2. Hereafter finger loosen the connection union. Do not use additional tools as it may damage the actuator.
IMPORTANT: Please make sure that the actuator is electrically opened, before re-fitting it on the valve.

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
11 31-00383-01
Installation of Actuators compatible with DN50 –250
Procedure to install the Actuator
The procedure to install the valve is as follows:
1. Grease the O-ring on the spindle adaptor with
silicone grease before placing the spindle adaptor
on the valve spindle.
2. Then place the actuator on the spindle adaptor
and place the three actuators “legs” into the three
holes in the mounting bracket as shown below.
Make sure that the snap ring is clicked onto the
mounting bracket, so that the snap ring is locked
at the top of the mounting bracket, but still able to
rotate.
3. Then finger turns the snap ring counterclockwise
(upside view) approximately 1/6 of a turn until its
stop points touch the actuator “legs” and the
mounting is a lock with a (small) click. Do not use
additional tools.
Figure 16 Actuator Assembly for DN 50-250
Mounting Position
The actuators can be mounted in any position (IP54 is
dependent upon orientation; see Figure 17). Choose a
mounting position permitting easy access to cables.
Figure 17. Actuator mounting for IP54
Procedure to remove the Actuator
The Steps to remove the actuator is as follows:
1. Make sure if the valve is in open position for easy
removal of the actuator.
2. Turn the Snap ring in the clockwise direction until
the actuator is loosened.
3. Lift the actuator up, to remove the actuator.
Figure 18 Actuator De-Assembling
IMPORTANT: Do not remove cover from actuator.
Opening cover will void warranty.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 12
ELECTRICAL INSTALLATIONS
Electrical Wiring for Actuators Compatible to DN15-50
The most important part of the electrical installation is the appropriate wiring set-up as per application. Below are
examples of electrical wiring provided as per the actuator model.
MLP71MAA Actuators
MLP41MNA Actuators

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
13 31-00383-01
MLE-71MAA Actuators
Start Up Sequence
When power to the actuator is turned On, the actuator will automatically calibrate to determine the closing point.
Hereafter it will proceed to the normal operation mode (according to control signal).
For the failsafe version, capacitor charging will be prioritized (max. 120 sec depending on capacitor energy level) during
start-up and repowering. After completion of the charging mode followed by calibration mode, the actuator will proceed
to the normal operation mode.
Auto Cycle Sequence
Auto Cycle can be activated during commissioning. It prevents the valve from jamming when the valve is not moved for
a longer period of inactivity. By moving DIP switch #1 from OFF to ON, Auto-Cycle is activated. The actuator will then
perform a 50% stroke cycle every 3 weeks if no stroke movement has occurred.
Electrical Override
By moving DIP switch #6 from OFF to ON, electrical override is activated, and the actuator will open the valve fully.
During an electrical override, the LED indicator will blink red and green. When DIP switch #6 is moved back to OFF, the
actuator will re-calibrate and thereafter go into normal operation mode. Electrical override is performed with power
supply.
Failsafe Mode
When power is lost, the actuator will go into failsafe mode after a few seconds, mandatory that capacitor charging, and
start-up sequence are completed. The actuator will perform failsafe action (open or close) and stay in failsafe final
position until the return of power. Upon power, the. actuator remains in the final failsafe position until charging mode
is reached (max. 60 sec). Hereafter the actuator will return to the normal operation mode.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 14
MLP75MAB and MLE75MAB Actuators
Configuration and Setup
Start Up Sequence
When power to the actuator is turned on, the actuator will automatically calibrate to determine closing point. Hereafter
it will proceed to normal operation mode (according to control signal). For the failsafe version, capacitor charging will
be prioritized (max. 215 sec depending on capacitor energy level) during start-up and re-powering. After completion of
charging mode followed by calibration mode, the actuator will proceed to normal operation mode.
Auto Cycle Sequence
Auto Cycle can be activated during commissioning. It prevents the valve from jamming when the valve is not moved
for a longer period of inactivity. By moving DIP switch #1 from OFF to ON, Auto Cycle is activated. Actuator will then
perform 50% stroke cycle every 3 weeks if no stroke movement has occurred.
Re-Calibration (MLP75MAB)
By flipping DIP switch #6 from one setting to the other (starting position indifferent) re-calibration is activated. After
completed re-calibration the actuator will automatically go into normal operation. During re-calibration mode the
LED will blink green.
Manual Override (MLP75MAB)
Before performing manual override, please turn off the power supply. Lift the silicone cap on the top of the actuator
to get access to manual override. Manual override is performed by a 4 mm (~5/32”) hex key. Clockwise turning will
open the valve and counterclockwise turning will close the valve.

VPI PRESSURE INDEPENDENT CONTROL VALVES & ACTUATORS
15 31-00383-01
Electrical Override (MLE75MAB)
By moving DIP switch #6 from OFF to ON, electrical override is activated, and the actuator will open valve fully.
During electrical override the LED indicator will blink red and green. When DIP switch #6 is moved back to OFF, the
actuator will re-calibrate and thereafter go into normal operation mode. Electrical override is performed with power
supply on.
Failsafe Mode (MLE75MAB)
When power is lost, the actuator will go into failsafe mode after a few seconds, mandatory that capacitor charging,
and start-up sequence are completed. The actuator will perform failsafe action (open or close) and stay in failsafe
final position until return of power. Upon power, the actuator remains in the final failsafe position until charging
mode is reached (max. 15 sec). Hereafter the actuator will return to normal operation mode.
MLP41TNA and MLP71TNA (Thermoelectric) Actuators
24V versions must be powered by a safety isolating transformer (for AC variant) according to EN 61558-2-6 or class
II FCC-quality proofed or a switching power supply (for DC variant) according to EN 61558-2-16. For MLP71TNA
actuator the power supply must have a maximum power output of 100VA.
Start-up Sequence
During FIRST TIME POWERING operating voltage must be applied for at least 6 minutes. Ensure to have the actuator
mounted on the valve, when powering as it has automatic stroke detection. To speed up a re-calibration of the stroke,
close (0V) the actuator for 30 minutes then open (10V) for 30 minutes and leave the power on for the next 24 hours.

VPI Pressure Independent Control Valves & Actuators
31-00383-01 16
DIP Switch Settings
The valve functions are set on DIP switches found under the connection cover. PCB mounted electrical components
will not be directly exposed when DIP switches are to be set. The factory setting for all switches is OFF.
The DIP switches are available only in MLP71MAA, MLE71MAA, MLP75MAB, and MLE75MAB.
For Fail-safe actuators (MLE71MAA and MLE75MAB)
Switch
number
Switch Function
On
Off
Factory Settings
Switch #6
Electrical override ON
Electrical override OFF
Off
Switch #5
Failsafe open
Failsafe close
Normally Closed
Switch #4
Equal % control
Linear control
Linear control.
Switch #3
Normally open
Normally close
Normally closed;
0V DC = valve closed.
Switch #2
Analog 2-10V DC
Analog 0-10V DC
0-10V DC
Switch #1
Autocycle ON
Autocycle OFF
OFF
For non - Fail-safe actuators (MLE71MAA and MLE75MAB)
Switch
number
Switch Function
On
Off
Factory Settings
Switch #6
Electrical override ON
Electrical override OFF
Off
Switch #5
-(No function)
Normally Closed
Switch #4
Equal % control
Linear control
Linear control.
Switch #3
Normally open
Normally close
Normally closed;
0V DC = valve closed.
Switch #2
Analog 2-10V DC
Analog 0-10V DC
0-10V DC
Switch #1
Autocycle ON
Autocycle OFF
OFF
LED Status
The LED indicator is visible through the dark colored transparent connection cover. The LED indication will give the
following statuses.
Switch number
Switch Function
MLP75MAB
MLE75MAB
MLP71MAA
MLE71MAA
Normal operation mode
Full on green
Full on green
Full on green
Full on green
Charging mode
n/a
Blinking red
(200 sec)
n/a
Blinking red
(60 sec)
Calibration mode
(closing point adjustment)
Blinking green
Blinking green
Blinking green
Blinking green
Electrical override mode
n/a
Blinking red/green
Blinking red/green
Blinking red/green
Failsafe mode
n/a
OFF
n/a
OFF
Normal operation mode
Full on green
Full on green
--
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