AVK ACMO 879 Series Instruction manual

INSTALLATION, OPERATION & MAINTENANCE MANUAL
ACMO-AVK DIAPHRAGM
AUTOMATIC CONTROL VALVE
SERIES 879 - M770 - 879/BB9X9X-001
ELECTRONIC CONTROL VALVE
Rev. 05 - 20210316
ACMO-AVK_IOM_879-M770_2020_ENCOPYRIGHT©AVKGROUP - ACMO - www.acmosrl.com

Index
1. Manufacturer identification
2. General health and safety measures
3. Receiving and storage
3.1 Product identification
3.2 Packing
3.3 Transport and storing
4. Testing valves
5. Warranty
6. Disposal and recycling
7. Series 879 overview
7.1 Valve components description
7.2 Valve dimensions
7.3 Diagrams
7.4 Hydraulic specifications
8. Principle of operation
9. Installation
10. Hydraulic circuit
11. Static tests once installed
12. Commissioning
13. Maintenance
14. Recommended spare parts
15. Troubleshooting
16. Solenoid valve
16.1 Solenoid IP67: SOL24DC15WLEDPMD
16.2 Solenoid IP68: SOL24DC15WPMD
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
ACMO-AVK | IOM Manuals
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
03
03
04
04
04
04
05
05
05
06
06
07
08
09
09
09
10
11
11
12
12
13
14
14
15

1. Manufacturer identification
2. General health and safety measures
AC.MO S.r.l.
Headquarters Street: Via Tommaso da Modena, 28 Z.I. - 31056 RONCADE (TV) ITALY
Tel: [phone] r.a. Fax: [phone] e-mail: [email protected]
www.acmosrl.com
• Read the IOM manual before using the valve. Comply with the manual at all times.
• The IOM manual must be available in the workplace.
• Non–compliance with the general safety measures can seriously damage human health and
valve functioning. AC.MO S.r.l. will not assume any responsibility or liability for consequential
damage due to the non-compliance with these instructions.
• The valve can be used for drinking water and clean service water. Other uses are prohibited
because they can alter the valve safety.
• Never use the valve in plants where the pressure is higher than the one indicated.
• Only qualified staff can install the valve. Unqualified or underage staff cannot perform the
installation. Always use protective equipment such as safety boots, safety helmets, goggles,
protective gloves, etc... Personnel involved in the installation or maintenance of valves should
be constantly alert to possible damages caused by an improper handling of the valve.
• Before performing any work on the valve, depressurize the pipeline section and ensure it is
free of hazards.
• Unauthorized, unintentional and unexpected actuation, as well as any hazardous movement
caused by stored energy (pressurized air, water under pressure) must be prevented.
• When a valve needs to be dismantled from a pipeline, water may emerge from the pipeline or
the valve. The pipeline must be emptied completely before the valve is dismantled. It is strictly
prohibited to disinstall any component when the system is under pressure (working) or when
there is any fluid inside.
• Statutory and local provisions as well as the safety and accident prevention regulations must
be observed and complied with at all times.
• For equipment that must be monitored, the relevant laws and regulations such as the Industrial
Code, Accident Prevention Regulations, etc. must be complied with. In addition to this, local
accident prevention regulations apply.
PLEASE NOTE: That if the valve closes too rapidly it can generate a water hammer in the pipes.
For product improvement purposes, AC.MO S.r.l. reserves the right to change the data in this
manual at any time and without notice. Unauthorized use of data is forbidden.
Please contact us for up-to-date information.
Thank you for purchasing our product. We kindly invite you to read carefully the operating
instructions and safety rules in this manual, which is part of the product.
ACMO-AVK | IOM Manuals
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.

+-
P
RE
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RE RED
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Mod.
AC
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an
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1
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0
-
2
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ba
r
C
alibration
8
.
5
bar
Year
:
r
r
2020
w
w
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RR
EN1074-5 / EN558 SERIES 1
GJS/AISI304/EPDM
WATER 70C
s/n
00/000/000
MADE IN I
T
A
T
T
L
Y
L
L
YEAR:
2020
DN
50
PN
10/16
879/BB0X99
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R
DN50....100 DN125....150 DN200....600
3. Receiving and storage
3.1 Product identification
• The valve is labeled on the body with ACMO/AVK
logo and model identification number of the valve.
• The pilot is labeled with ACMO/AVK logo, the model
identification number and the setting parameters.
3.2 Packing
The valves are generally delivered in europallets, alternatively, in dedicated high thickness paper
boxes. In both cases, they are fastened to the pallet using bolts and covered with a polyethylene
heat-shrinking film. The package depends on the valve dimensions and on the actuator and/or
hydraulic circuit that may be installed on the valve. The package depends on the valve dimensions
and on the hydraulic circuit dimensions.
Packing examples:
3.3 Transport and storing
WARNING: Please carefully inspect the unit for damages or discrepancies with the order upon
arrival and report a claim immediately before unloading the goods.
Lifting the valve improperly may damage it. Lift the valves using slings (ISO 4878), otherwise, if
present on one valve, using the specific eyebolts.
Make sure the slings do not interfere with circuit components. Don’t lift up the valves using the
position indicator or the accessories and pipes installed on the valve.
Please make sure the lifting tools (lift truck, slings, cranes, hooks, etc.) are adequate for the weight.
Before you move the valve it is necessary to consult the weight table at page 7. Make sure their
coefficient of safety is equal or higher than the coefficient allowed by law.
If the valve is stored for a middle or long term, it is necessary to:
• Lay the valve in a horizontal and firm position, in order to avoid capsizings which could
damage things or people.
• Store the valves in an area protected from weather conditions especially from sunlight, which
could damage the coats and the gaskets.
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
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AC.MO S.r.l. guarantees its products for the supplier or the client for a 12 month consecutive period
since the delivery date to the final client. The warranty coverage period will correspond to the date
on the final client’s delivery note. Product faults and damages must be pointed out within 8 days
since their identification.
The warranty covers all the parts manufactured/provided by AC.MO S.r.l..
Warranty does not cover normal wear damages.
The warranty does not apply to:
• Valves equipped with tools and accessories, unauthorized by AC.MO S.r.l..
• Valves damaged by misuse, accidents or other chances, negligence, eccess load etc..
• Valves damaged by lack of maintenance.
• Valves equipped with non-original spare parts.
• Valves modified without authorisation.
Even though AC.MO S.r.l. valves are designed and built to be extremely long lasting, at the end of
their life cycle they must be removed and replaced.
Dismantle the valve, separate its components to dispose them of and recycle them (e.g., metal
parts must be separated from plastic parts etc.).
WARNING: Always respect the directives on waste collection, disposal and recycling.
Carefully observe all steps listed in National Laws on waste disposal and recycling.
All valves AC.MO S.r.l. designs are tested and controlled before leaving our premises.
The test (inspection certificate) is available on request.
4. Testing valves
5. Warranty
6. Disposal and recycling
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.

7. Series 879 overview
7.1 Valve components description
15
16
17
18
13
12
14
2
3
4
1
7
810
11
9
6
5
ITEM DESCRIPTION MATERIALS STANDARDS
1BODY DUCTILE IRON EN GJS-500-7 EN 1563
2O-RING RUBBER EPDM EN 681-1
3O-RING RUBBER EPDM EN 681-1
4PLUG SEALING RUBBER EPDM EN 681-1
5HEX NUT STAINLESS STEEL A2 EN ISO 3506-1
6WASHER STAINLESS STEEL AISI304 EN 10088-3
7BOLTS STAINLESS STEEL A2 EN ISO 3506-1
8DIAPHRAGM RUBBER EPDM EN 681-1
9SPRING STAINLESS STEEL AISI304 EN 10088-3
10 FLAT SEAL RUBBER EPDM EN 681-1
11 FLAT SEAL RUBBER EPDM EN 681-1
12 COVER DUCTILE IRON EN GJS-500-7 EN 1563
13 HEX NUT STAINLESS STEEL A2 EN ISO 3506-1
14 DIAPHRAGM SUPPORT DUCTILE IRON EN GJS-500-7 EN 1563
15 OBTURATOR DUCTILE IRON EN GJS-500-7 EN 1563
16 REGULATING PLUG STAINLESS STEEL AISI304 EN 10088-3
17 SEAT STAINLESS STEEL AISI304 EN 10088-3
18 STEM STAINLESS STEEL AISI304 EN 10088-3
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
ACMO-AVK | IOM Manuals
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)

7.2 Valve dimensions
øA
H
øD
øKL
W
ød
nr x øf
EN588
S1
FULL BORE REDUCED BORE
DRILLING FLANGES WEIGHT kg*
EN1092-2 PN10 EN1092-2 PN16 FULL
BORE
RED.
BORE
DN L H* øA W* H* øA W* øDøKøfnrødøDøKøfnrød
50(1) 230 309 188 312 - - - 165 125 19 4 99 165 125 19 4 99 17 -
65 290 342 215 315 326 188 318 185 145 19 4 118 185 145 19 4 118 22 20
80 310 357 234 330 344 215 328 200 160 19 8 132 200 160 19 8 132 26 23
100 350 380 280 350 359 234 343 220 180 19 8 156 220 180 19 8 156 35 28
125(2) 400 - - - 378 234 357 250 210 19 8 184 250 210 19 8 184 - 32
150 480 513 406 410 421 280 360 285 240 23 8 211 285 240 23 8 211 81 45
200 600 597 507 510 512 406 409 340 295 23 8 266 340 295 23 12 266 137 95
250 730 677 554 555 617 507 507 395 350 23 12 319 405 355 28 12 319 198 156
300 850 746 604 605 697 554 554 445 400 23 12 370 460 410 28 12 370 255 220
350 980 868 710 710 782 604 605 505 460 23 16 429 520 470 28 16 429 456 323
400 1100 930 780 780 906 710 710 565 515 28 16 480 580 525 31 16 480 542 494
450 1200 1108 929 930 967 780 780 615 565 28 20 530 640 585 31 20 548 868 641
500 1250 1182 1018 1020 1155 929 930 670 620 28 20 582 715 650 34 20 609 1113 931
600 1450 1331 1186 1190 1265 1018 1020 780 725 31 20 682 840 770 37 20 720 1672 1268
* INDICATIVE VALUES
(1) ONLY FULL BORE
(2) ONLY REDUCED BORE UNIT: mm
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.

The diagram shows indicatively the two
operating areas of the reducer, according to
the applicable upstream and downstream
pressures.
AREA A: continuous working conditions.
No cavitation risk.
AREA B: intermitting working conditions.
Possible cavitation risk.
Continuous working conditions in the B
ZONE can damage rapidly the internal
parts. Appropriate design precautions must
be adopted if the valve works in this ZONE.
Please, contact our Technical Department.
DIAGRAM FOR THE CAVITATION CHECK
Limit of use
Recommended fluid velocity upstream of
the valve: Continuous service: 3,5 m/s
Peak service: 5 m/s
Minimum necessary differential pressure:
0,2 bar.
Working temperature from -10°C to +80°C.
012345678910
0
5
10
15
20
25
B
A
CAVITATION RISK
NO CAVITATION
DOWNSTREAM PRESSURE (bar)
UPSTREAM PRESSURE (bar)
HEAD LOSS DIAGRAM
FLOW RATE (m3/h)
HEAD LOSS (bar)
0.01
0.1
1.0
1 10 100 1000 10000
DN50 DN65 DN80 DN100 DN150 DN200 DN250 DN300 DN350 DN450 DN400 DN500 DN600
REDUCED BORE
FULL BORE
DN65 DN80 DN100 DN125 DN150 DN200 DN250 DN300 DN350 DN450 DN400 DN500 DN600
7.3 Diagrams
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)

7.4. Hydraulic specifications
8. Principle of operation
DN - REDUCED BORE 65 80 100 125 150 200 250 300 350 400 450 500 600
Kv [m3/h] 53 83 119 135 202 435 734 990 1584 2221 2899 3865 4735
STROKE [mm] 16 18.5 23.2 23.2 25.2 44.5 53.8 64.3 74.9 89.2 100 113.3 125.1
DN - FULL BORE 50 65 80 100 150 200 250 300 350 400 450 500 600
Kv [m3/h]
44 76 116 175 400 710 947 1355 2174 2734 3757 4548 6539
STROKE [mm] 16 18.5 23.2 25.2 44.5 53.8 64.3 74.9 89.2 100 113.3 125.1 150
• Leave appropriate space to facilitate the assembling/dismantling and maintenance operations.
• Before the installation, wash the pipes properly to eliminate any residual. Not washing the
pipes properly can compromise the valve functioning.
• Install a resilient seat gate valves upstream and downstream the valve in order to facilitate
maintenance operations.
• Install the valve on the pipeline, checking the arrow printed on the valve must follow the water
flow. Use the eyelet on the cover to lift or lower the valve.
• The valve should be installed in a horizontal position with the cover up; other positions are also
possible but must be verified with our Technical Office.
• Make sure the valve position permits to easily dismantle the hydraulic circuit or its components.
• After the installation, check there are not damages to any joint, pipe or tools.
An automatic control valve specifically designed to be implemented through an electrical control.
The valve is slaved to two solenoid valves which determine the opening and closing according to
the electric command received.
9. Installation
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.

10. Hydraulic circuit
6
9
7
2
1
3
10
4
5
8
11
ITEM DESCRIPTION MATERIALS
1SOLENOID VALVE NC BRASS
2SOLENOID VALVE NC BRASS
32-WAY BALL VALVE NICKEL BRASS
4Y STRAINER BRASS
5BIDIRECTIONAL NEEDLE VALVE STAINLESS STEEL
6BIDIRECTIONAL NEEDLE VALVE STAINLESS STEEL
ITEM DESCRIPTION MATERIALS
72-WAY BALL VALVE NICKEL BRASS
82-WAY BALL VALVE NICKEL BRASS
92-WAY BALL VALVE NICKEL BRASS
10 2-WAY BALL VALVE NICKEL BRASS
11 2-WAY BALL VALVE NICKEL BRASS
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
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879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)

OPEN valve static test:
1. Close ball valves 3 - 7 - 10 to isolate the pilot control system. This prevents impurities from
entering the control circuit.
2. Fully open the main valve by removing the cap on the cover or by loosening a junction or
opening ball valves 7 - 9 - 11.
WARNING: Check this procedure does not cause any damage to the pipeline.
3. Check that the flanged junctions, pipe fittings, etc. do not leak.
4. Reassemble the cap on the cover and/or tighten the junctions, or close ball valves 3 - 7 - 10.
CLOSE valve static test:
1. Close the ball valves 9 - 10 - 11, and open ball valves 3 - 7 - 8.
2. Release the air under the cover of the main valve loosening the junction situated in the highest
point of the cover. Tighten the junction. This will keep the valve shut when the pipeline is
pressurized.
3. Check the cover does not leak, in case, tighten the fixing bolts.
11. Static tests once installed
12. Commissioning
1. De-energize solenoid valves 1 - 2. Open ball valves 3 - 7 - 10. Close ball valves 8 - 9 - 11.
2. Open alternatedly ball valves 9 - 8 to open or close the valve. Use needle valve 5 to regulate the
closure speed. Use needle valve 6to regulate the opening speed. Turn clockwise to decrease
the speed and counterclockwise to increase it.
3. Close ball valves 8 - 9. Open and close the main valve through the electric command to solenoid
valves 1 - 2.
PLEASE NOTE. When the solenoid valves are normally closed (NC), the main valve OPENS/
CLOSES with the energized solenoid, and STOPS with the de-energized solenoid.
PLEASE NOTE. When the solenoid valves are normally opened (NO), the main valve OPENS/
CLOSES with the de-energized solenoid, and STOPS with the energized solenoid.
4. Check the operation in accordance with the electric set.
PLEASE NOTE. Under special pressure conditions open ball valve 11 instead of ball valve 10.
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.

The quality of the material used to manufacture our valves and control circuits avoids abnormal
wear of the internal components for many years. However, we recommend checking the valve as
follows:
After 5 months operation:
• Control and clean the strainer (if present) installed on the main pipeline and the strainer on the
pilot circuit of the valve.
• If blocked, the strainer on the pilot circuit takes the main valve gradually out of order.
NOTE: Clean the strainer regularly following the specific timetable of the plant. This timetable
cannot be predetermined but must be decided only when the valve is on duty.
After 12 months operation:
• Control and clean the strainer (if present) installed on the main pipeline and the strainer on the
pilot circuit of the valve.
• Remove the control circuit.
• Remove the screws on the valve cover, remove the cover, and take out the obturator completely.
• Check for any eventual damage of the rubber components, such as: the lip seals of the piston
and the seal gasket to schedule the maintenance intervention.
• Assemble the obturator, the valve cover and tighten the bolts properly.
• Put the valve back into service.
This kind of check allows scheduling the maintenance required by the valve, taking into account
the real working conditions.
13. Maintenance
14. Recommended spare parts
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
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879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
ITEM
(see page 8) QTY DESCRIPTION MATERIALS
2-3 1 O-RING RUBBER EPDM
91 SPRING STAINLESS STEEL AISI 304
81 DIAPHRAGM RUBBER EPDM

PROBLEM CAUSE SOLUTION
THE VALVE
DOES NOT OPEN
Low inlet pressure. Check the pressure or apply a higher inlet
pressure.
Insufficient water demand. Check the water demand or make it
increase.
Ball valves 7 - 10 are closed. Open ball valves 7 - 10.
THE VALVE
DOES NOT CLOSE
Circuit strainer 4is clogged. Clean the strainer 4.
Ball valves 3-7closed. Open ball valves 3 - 7.
Residues in the principal valve. Remove and inspection the actuator.
Inspection the disc gasket and the seat.
The main valve diaphragm leaks. Close the ball valve 3 - 7 - 10 and remove
the plug from the cover. If the diaphragm
continues leaking it must be substituted
because it has been damaged.
WARNING: The valve will open
completely.
PLEASE NOTE: While working, ball valves 3 - 7 - 10 must be OPEN, ball valves 8 - 9 CLOSED.
While cleaning the strainer 4ball valves 3 - 7 - 10 must be CLOSE.
15. Troubleshooting
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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.

16. Solenoid valve
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
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DIAGRAM
DIRECT ACTING NORMALLY CLOSED SOLENOID VALVE TERMINAL BOX (BCE)
16.1 Solenoid IP67: SOL24DC15WLEDPMD
TECHNICAL DATA
DIRECT ACTING NORMALLY CLOSED SOLENOID VALVE TERMINAL BOX (BCE)
PRESSURE 0-25 bar CABLE ENTRY 22 mm plug as per DIN 43650 Type B
BODY MATERIAL Brass MATERIAL Steeel Chrome plated
INTERNALS MATERIAL Brass INSULATION CLASS H
GUIDE ASSEMBLY Stainless steel 304 PROTECTION IP67
PLUNGER, INSERT Stainless steel 430 POWER 15 W
SPRING Stainless steel 302 APPROVAL Indian, European, SIL
SEAT, SEAL NBR VOLTAGE 24 V DC
MEDIA Air, Inert Gases, Water OPERATING VOLTAGE from 19.2V to 28.8V
PORT CONNECTION 1/4” BSP DUTY CYCLE 100% (ED)
ORIFICE SIZE 1.6 mm WEIGHT 0.3 Kg
AMBIENT AND
FLUID TEMPERATURE -25°C / +75°C
92 Ø50
Ø38
=25=
2-M6x10Deep
Ø38
87
16
10.5
CONNESSIONI IDRAULICHE
HYDRAULIC CONNECTIONS
1
2
USCITA
OUTLET
INGRESSO
INLET

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ACMO-AVK AUTOMATIC CONTROL VALVE SERIES 879
879/BB9X9X-001 - M770 ELECTRONIC CONTROL VALVE (STEP BY STEP)
The designs, materials and specifications shown are subject to change without notice. This is due to the continuous development of our product programme.
Unauthorized use is forbidden.
DIAGRAM
DIRECT ACTING NORMALLY CLOSED SOLENOID VALVE TERMINAL BOX (BCE)
16.2 Solenoid IP68: SOL24DC15WPMD
TECHNICAL DATA
DIRECT ACTING NORMALLY CLOSED SOLENOID VALVE TERMINAL BOX (BCE)
PRESSURE 0-25 bar CABLE ENTRY M25 X 1.5 ADAPTED M20X1.5
BODY MATERIAL Brass MATERIAL Aluminum Cast colour Blue polyester powder coat
INTERNALS MATERIAL Brass INSULATION CLASS H
GUIDE ASSEMBLY Stainless steel 304 PROTECTION IP68
PLUNGER, INSERT Stainless steel 430 POWER 15 W
SPRING Stainless steel 302 APPROVAL UL listed, CE
SEAT, SEAL NBR VOLTAGE 24 V DC
MEDIA Air, Inert Gases, Water OPERATING VOLTAGE from 19.2V to 28.8V
PORT CONNECTION 1/4” BSP DUTY CYCLE 100% (ED)
ORIFICE SIZE 1.6 mm WEIGHT 0.8 Kg
AMBIENT AND
FLUID TEMPERATURE -25°C / +75°C
127 54
38
=25=
2-M6x10Deep
38
87 76
16
10.5
CABLE ENTRY
CONNESSIONI IDRAULICHE
HYDRAULIC CONNECTIONS
1
2
USCITA
OUTLET
INGRESSO
INLET

Legal Office:
00136 Roma - Italy - Via Franco Michelini Tocci, 93
tel [phone] - fax [phone]
[email protected]
Headquarters:
31056 Roncade (TV) - Italy - Via T. da Modena, 28 - Z.I.
tel [phone] r.a. - fax [phone]
[email protected]
www.acmosrl.com