AKO V Series User manual

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
1
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Translation
Series
V VF VM VMC VMCE VMF VMP VT
Ex-Series
VX VFX VMX VMCX VMCEX VMFX VMPX VTX

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
2
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Contents
1. Safety Instructions ............................................................................................................................................................... 3
Special conditions and safety instructions for use in potentially explosive areas ............................................................... 4
2. Usage ..................................................................................................................................................................................... 7
2.1 Service life .......................................................................................................................................................................... 7
2.2 Intended use ...................................................................................................................................................................... 7
2.3 Improper use....................................................................................................................................................................... 7
2.4 Function ............................................................................................................................................................................. 7
3. Technical description ........................................................................................................................................................... 8
3.1 Control ................................................................................................................................................................................ 8
3.2 Technical data .................................................................................................................................................................... 8
3.3 Operating data ................................................................................................................................................................... 8
4. Assembly ............................................................................................................................................................................... 9
4.1 Preparation ......................................................................................................................................................................... 9
4.2 Mechanical connections ..................................................................................................................................................... 9
4.3 Connection for the control pressure line ............................................................................................................................ 9
5. Commissioning .................................................................................................................................................................... 10
5.1 Requirements .................................................................................................................................................................... 10
5.2 Normal operation ............................................................................................................................................................... 10
6. Maintenance and Repair ......................................................................................................................................................11
6.1 General specications ........................................................................................................................................................11
6.2 Inspection ...........................................................................................................................................................................11
6.3 Maintenance intervals ........................................................................................................................................................11
6.4 Repair work ........................................................................................................................................................................11
7. Malfunctions .........................................................................................................................................................................11
8. Storage ..................................................................................................................................................................................11
9. Disposal .................................................................................................................................................................................11
10. Additional Documentation .................................................................................................................................................. 12
11. Maintenance / Repair Instructions ...................................................................................................................................... 13
11.1 General principles for tting the pinch valves .................................................................................................................... 13
11.2 General principles for the maintenance/repair of the pinch valves .................................................................................... 14
11.3 Air operated Pinch Valve series VF, DN 40-80 .................................................................................................................. 15
11.4 Air operated Pinch Valve series V, VF, DN100-300 ........................................................................................................... 16
11.5 Air operated Pinch Valve series VMC, DN10-50, Typ F, FA, G, M, N, R, RA, T, TA ........................................................... 17
11.6 Air operated Pinch Valve series VMC, DN65-80, Typ F, FA ............................................................................................... 18
11.7 Air operated Pinch Valve series VMC, DN65-80, Typ G, M, N, R, RA, T, TA, FT .............................................................. 19
11.8 Air operated Pinch Valve series VMC, DN100, Typ F, FA .................................................................................................. 20
11.9 Air operated Pinch Valve series VMC, DN 100, Typ G, M, R, RA, T, A .............................................................................. 21
11.10 Air operated Pinch Valve series VMC, DN125-150, Typ F, FA, R, RA, T, TA ..................................................................... 22
11.11 Air operated Pinch Valve series VMP, DN10-50 ................................................................................................................ 23
11.12 Air operated Pinch Valve series VM+VMF, DN10-50 ......................................................................................................... 24
11.13 Air operated Pinch Valve series VT, DN100 ...................................................................................................................... 25
12. Appendix .............................................................................................................................................................................. 26
12.1 Possible malfunctions ........................................................................................................................................................ 26
12.2 EC Declaration of Incorporation ......................................................................................................................................... 27

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
3
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
This operating and assembly manual ensures safe installa-
tion and safe commissioning of the air operated AKO pinch
valves, hereinafter called pinch valves. Please rstly read
and follow these safety instructions and observe the opera-
ting and assembly manual.
1. Safety Instructions
The installation, maintenance and commissioning must only be
performed by qualied personnel or by personnel assigned by
the operator. The operating and assembly manual with the safety
instructions must be to hand at all times for operating and main-
tenance personnel.
WARNING: Danger of crushing
Severe crushing may occur when closing the pinch
valve.
ÎDo not put your hands or other body parts in the ope-
ning.
ÎPerform measures that prevent the insertion of ngers or
hands into the interior space of the pinch valves.
ÎInstall appropriate warnings if required.
Note
The pinch valve conguration (materials for the in-
dividual parts e.g. sleeve) must be suitable for the
operating medium.
Note
The documentation is subject to constant changes
due to updates.
The current version is valid and you can nd it at
www.pinch-valve.com.
Only use the pinch valve when it is tted (e.g. in a pipe).
Use dry, oil-free and ltered compressed air as a control medium
to avoid corrosion and damage to the pinch valve and sleeve.
Isolate the control pressure and relieve the pinch valve of any
pressure immediately in case of failure of or damage to the pinch
valve. The control pressure connection must remain under pres-
sure. Remove the pinch valve only when it is not under pressure.
Contact protection must be provided and marked by
the operator if necessary at high temperatures. Any
warning signs, such as „Hot surface“, must be a󰀩xed
to the pinch valve.
Note
Unstable gases must not be used as a pumping
medium.
WARNING! Risk of contamination
If the sleeve is destroyed due to temperatures
above its maximum application limits (also due to
re),
Îhe pumping medium may possibly become contami-
nated (release of poisonous gases). In addition, the air
operated pinch valve will then be inoperable.
ÎAvoid any possible consequential damage to the whole
plant through the corresponding on-site safety measu-
res derived from the risk assessment for the whole plant.
This risk assessment must be created and documented
on-site by the operator.
ÎEnsure that the contaminated pumping medium is not
circulated and is disposed of in accordance with local
and national regulations.
ÎReplace the destroyed air operated pinch valve.
ÎIn the case of dangerous, explosive or toxic transpor-
ted media, a corresponding protective measure must be
provided to prevent the media escaping into the atmo-
sphere.
Note
If the sleeve breaks, the transported medium can
be pushed into the control pressure line or control
components (e.g. solenoid valve, proportional val-
ve, etc.) and cause damage.
It is possible that the transported medium may escape into the
atmosphere via the control components.
Note
If the air operated pinch valve freezes up due to
condensation and/or low temperatures, it will be
inoperable.
ÎAvoid any possible consequential damage to the whole
plant through the corresponding on-site safety measu-
res derived from the risk assessment for the whole plant.
This risk assessment must be created and documented
on site by the operator.
ÎIf necessary, heat up the air operated pinch valve.
Note
Condensation may form in the control medium
area between the surrounding area, control me-
dium and operating medium if there are large tem-
perature di󰀨erences. This can get into the control pressure
line and must be drained/disposed of in a controlled manner.
The operator must depressurise the pinch valves in case of a re
to ensure that damaged pinch valves cannot explode.
The maximum pressure and temperature specications on the
type plate must be observed and strictly adhered to. A pressure
regulating valve/pressure limiter is to be installed in the control
pressure line and set to the control pressure to be calculated.

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
4
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Optimum control pressure
(example calculation)
Operating pressure (pumping pressure) 3,0 bar
∟Excess pressure (pos. o. neg.) / relative pressure
+ Di󰀨erential pressure (see type plate) 2,5 bar
= Optimum control pressure to be set 5,5 bar
Note
In the case of periodic inspections (e.g. in the sen-
se of the German Health and Safety at Work Regu-
lations (BetrSichV)), the housing must be lled with
water because the housing and not the sleeve is the pressure-
bearing component. The test pressure of 1.43 x the max. con-
trol pressure (DGRL) and the test period of up to DN150 = 60
seconds then 120 seconds (EN12266) must not be exceeded.
Special conditions and safety instructions for use
in potentially explosive areas
The installation, maintenance and commissioning
must be monitored and inspected by a person qua-
lied in explosion protection.
The air operated pinch valve should be included in
the company’s explosion protection document.
The designation stated on the Ex type plate is authoritative for
the use of the pinch valve.
Example Ex pinch valve Example ATEX pinch valve
Ex pinch valves
For Ex zones 0;1;2 and 20;21;22, the following pinch valves
are suitable but are not subject to ATEX:
Series: VX, VMX, VMCX,
VMCEX, VMPX
Sleeves: Mxxx.xxLF
Connection option type: 10 (steel),
(material) 33 (aluminium)
Not for equipment
group I for mining
50 (stainless steel),
73 (POM)
Body type: 10 (steel),
(material) 50 (stainless steel),
73 (POM)
ATEX pinch valves:
For Ex zones 1;2 and 21;22, the following pinch valves are
suitable and comply with ATEX:
Series: VFX, VMX, VMCX,
VMFX, VTX
Sleeve: Mxxx.xxLF
Connection option type: 50 (stainless steel),
(material) 31 (aluminium with steel),
35 (aluminium with stainl. steel)
Body type (material): 30 (aluminium)

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
5
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Marking according to ATEX RL 2014/34/EU
I M2 II 2GD IIC TX
Key:
Hexagonal symbol
(shows the specic designation for the
explosion protection)
I Equipment group I
(products for mining)
M2 Equipment group M2
II Equipment group II
(products not used in mining)
2 Equipment group 2
(the pinch valve is suitable for
Ex zones 1/21 and 2/22)
GD Hazard type GD
(the pinch valve is suitable for use in atmospheres
with gas (vapour/mist) and dust)
IIC Explosion group IIC
(the external and internal atmosphere has been
classied by the operator)
TX Temperature class TX
(the temperature class is dened by the user
themselves)
Marking according to ISO 80079-36
Ex h Mb
Ex h IIC T6...T4 Gb
Ex h IIC T120°C Db
Key:
Ex Ex symbol
h Non-electrical equipment for use in
potentially explosive atmospheres
Mb EPL*
M -> Equipment group I (products for areas at risk
of explosion in the mining industry)
b -> Level b = ATEX equipment category M2
IIC Type of potentially explosive gas
atmosphere
II -> Subgroup of equipment group II for
gases, vapours, mists
C -> Level C = gases such as hydrogen
T6...T4 Temperature class and max.
surface temperature
T6 = 85°C, T4 = 135°C
(the temperature class is dened by the
operator themselves)
Gb EPL*
G -> Equipment group II (products for areas at
risk of explosion due to gases, vapours,
mists)
b -> Level b = equipment category 2G, the pinch
valve is suitable for Ex zones 1 and 2
IIIC Type of potentially explosive dust
atmosphere
III -> Subgroup of equipment group III for dusts
C -> Level C = combustible airborne particles,
non-conductive dust and conductive dust
T120°C Max. surface temperature
Db EPL*
D -> Equipment group III
(products for areas at risk of explosion
due to dust)
b -> Level b = equipment category 2D, the pinch
valve is suitable for Ex zones 21 and 22
Ambient temperature
-10°C ≤ Ta ≤ 60°C Ambient temperature
Ta (or also Tamb)
If components from other manufacturers such as pressure ma-
nometers or other equipment parts/accessories are used, they
must have their own conformity assessments in accordance
with ATEX 2014/34/EU or 94/9/EC from the manufacturers.
The information provided by the manufacturers in relation to
the designation X must be observed.
If necessary, VDE0165 must be followed and observed during
the electrical installation.
Ex pinch valves (no aluminium in contact with the media) can
generally be used at all pumping speeds. However, you must
ensure (using a screen plate, magnetic lter system or other
method) that the pumped medium does not contain any steel
or other substances that could generate an ignition spark.
Pinch valves with valve connection pieces made of:
Î(33) Aluminium:
• There must be no rusted steel particles in the pumped
medium.
• Can generally be used at all pumping speeds. However,
you must ensure (using a screen plate, magnetic lter
system or other method) that the pumped medium does
not contain any steel or other substances that could ge-
nerate an ignition spark.
• If it is not possible to guarantee that the pumped me-
* EPL (Explosion Protection Level = Equipment protection level according to the ATEX equipment categories)

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
6
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
dium does not contain any substances that could
generate an ignition spark (e.g. metal parts), the Ex
pinch valve may only be operated up to a pumping
speed of ≤ 15m/s.
Î(31) Aluminium with steel bushings and/or
(35) Aluminium with stainless steel bushings and/or
(50) Stainless steel:
• Can generally be used at all pumping speeds. However,
you must ensure (using a screen plate, magnetic lter
system or other method) that the pumped medium does
not contain any steel or other substances that could ge-
nerate an ignition spark.
• If it is not possible to guarantee that the pumped me-
dium does not contain any substances that could gene-
rate an ignition spark (e.g. metal parts), the Ex pinch
valve may only be operated up to a pumping speed of
≤ 1 m/s.
Î(73) Electrostatically conductive plastic (POM):
• Can generally be used at all pumping speeds.
The Ex pinch valve made of aluminium is powder coated/pain-
ted on the outside. The powder coating/paint must be regu-
larly inspected and, if necessary, touched up. The maximum
coating thickness is 200 µm and this limit must be observed.
The subsequent coating is also not permitted to exceed a lay-
er thickness of 200 µm.
Knocking the valve free with a striking tool is not permitted.
Sparks due to friction and impact are thus not expected.
The internal uids must not impair the properties of the sleeve
and ange bushings such as their electrostatic conductivity or
resistance.
All electrical equipment tted, such as solenoid valves, pres-
sures switches and air vents, must be suitable for operation in
areas at risk of explosion (Ex) and have their own manufac-
turer‘s certicate or conformity assessment for use in areas
at risk of explosion (Ex). Accessories without approval for Ex
zones may not be installed in an Ex atmosphere.
Use only materials as a control medium that cannot lead to a
risk of explosion. The operator must ensure that any air ope-
rated/plastic hoses (or pipes) used are electrostatically con-
ductive (<10^6 Ohm).
The pinch valves must be adequately connected to a conduc-
tive, earthed pipe. The pinch valve should be integrated into
the potential equalisation (at least a 4 mm² copper strand for
unprotected installation). A xing screw with marking is loca-
ted on the pinch valve for connecting the earthing.
The potential equalisation (earthing) between the pipe and
pinch valve must be checked with a suitable measuring device
after it is tted in the pipe.
Dust and oil deposits must be promptly removed so that no
hazardous deposits and hybrids or mixtures of oils, grease
and dust can lead to glowing ignition.
The temperature of the pumping medium may increase
through friction when operating in the pumping area. The ope-
rator must ensure that the temperature of the owing medium
inside the valve is not higher than 80% of the ashpoint or the
ignition temperature of the pumping medium or the gases and
dust that can form Ex atmospheres. Otherwise the maximum
temperature of the pinch valve applies.
It must be impossible for rusted steel particles (corrosion par-
ticles, e.g. rust) in the pumped medium to come into contact
with the aluminium of the pinch valve. If necessary, the ope-
rator should prevent valves with an aluminium body from co-
ming into contact with rusty iron using suitable measures e.g.
A protective casing.
The occurrence of ignition sources as a result of ionising ra-
diation, X-rays, cathodic corrosion protection, stray currents,
adiabatic compression, frames and hot gases, electromagne-
tic waves, lightning, sparks due to friction and impact must be
safely prevented by the operator.
As the sleeve is a wear part, the control medium may get into
the pumping area due to a leak. If the pumping medium is
a liquid fuel and mixes with air, this may create a potentially
explosive atmosphere in the pumping area. Conversely, the
pumping medium may penetrate into the control pressure me-
dium and create a potentially explosive atmosphere there.
Pinch valves with a protective coating (e.g. paint) made of
non-conductive material must be tted with contact discs/tooth
lock washers (e.g. DIN6797A) in the plant.
The external or internal atmosphere has been classied by the
operator as being in explosion group IIC. The suitability of the
pinch valve for an external potentially explosive atmosphere
must thus be taken into account.
The operator must ensure using corresponding signs that no
ames and hot gases arise in the explosion protection zones
of the plant. This includes a ban on smoking and naked a-
mes.
Subsequent changes to the pinch valve require renewed ex-
plosion protection testing according to the servicing/repair ins-
tructions (work instruction) AA50_pV_xx_xxxx-xx-xx.

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
7
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
2. Usage
The pinch valves were evaluated in accordance with the require-
ments of the Pressure Equipment Directive (PED) 2014/68/EU,
the Machine Directive (MD) 2006/42/EG and the ATEX Directive
2014/34/EU.
Corresponding declarations of conformity and manufacturer‘s
certicates must be read and their content observed (see also
section 10).
2.1 Service life
Under ideal conditions, the service life of the pinch valves is limi-
ted to 30 years (VMP series 10 years).
The service life or the number of load changes (pressurisation)
may be reduced due to a number of factors.
These factors include environmental and operational inuences
such as the ambient/pumping medium temperature, wear, solar
radiation, switching cycles, vibrations during operation, tension
caused by assembly, external loads, contaminated control air,
corrosion or damage caused during operation or assembly.
In order to maintain the service life, the operator must check the
pinch valves for damage (e.g. cracks, corrosion, etc.) at self-de-
ned service intervals/maintenance measures. We recommend
pressurising the body every 10 years (VMP series 5 years) with
water and 1.5 times the maximum control pressure and checking
for leaks (Test EN1266 P10).
A damaged or leaking pinch valve has reached the end of its
service life and continuing to operate the valve is not permitted.
2.2 Intended use
The pinch valve is used to isolate or interrupt the material ow
of uids with sold and liquid components or dusts in pipes and
hoses.
Unstable gases must not be used as a pumping medium.
Pinch valves and accessories must be conside-
red individually for their respective use in areas at
risk of explosion (Ex) and suitable for use there.
Therefore, they cannot be supplied by AKO as an
assembled unit. Accessories are not put together as an as-
sembly as dened by the ATEX Directive 3.7.5. The operator
must determine the suitability of accessories supplied for use
in areas at risk of explosion (Ex).
2.3 Improper use
ÎNon-compliance with the operating and assembly manual
including the safety instructions.
ÎOperating the pinch valve for a purpose other than its in-
tended use.
ÎUnauthorised or untrained personnel operating the pinch
valve.
ÎUse of the pinch valve as an equipment part with a safety
function or as an end tting without corresponding rein-
forcement.
ÎInstalling non-original spare parts.
ÎViolating the applicable standards and laws.
AKO does not accept liability for damage resulting from failure
to observe the specications, safety instructions and warnings
in the operating and assembly manual or the modication of the
pinch valve.
2.4 Function
A exible elastomer hose (sleeve) is compressed by increasing
the pressure in the pinch valve body. This creates a lip-shaped
closing pattern (Fig. II). Powders and grains up to a certain size
are enclosed by the elastic sleeve. This ensures the pinch valve
tightness. The sleeve is opened again when the control pressure
is removed and by the restoring force of the sleeve.
Fig. I Fig. II
(A) Operating pressure (pumping pressure)
(B) + Di󰀨erential pressure (see type plate)
(C) = Optimum control pressure to be set

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
8
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
3. Technical description
3.1 Control
The pinch valve should be actuated by a control valve (e.g. 3/2-
way solenoid valve) tted directly to the control pressure con-
nection. Any control pressure line between the control valve and
pinch valve should be as short as possible. We recommend the
following cross-sections:
DN 10 - DN 25 = 4 mm nominal size
DN 32 - DN 150 = 6 mm nominal size
DN 200 = 9 mm nominal size
DN 250 - DN 300 = 13 mm nominal size
We recommend installing a quick exhaust valve directly on the
control connection so that the sleeve can be opened quicker
(control medium: compressed air). A pressure switch to moni-
tor the control pressure or display the OPEN/CLOSED position
can also be tted. Defects in the sleeve can be detected in good
time and replaced in a targeted manner in most cases using this
pressure switch. Pressure compensation with the product ow
must be provided on the control medium side if the pinch valve is
operated in a vacuum process below 100 mbar.
Please refer to the „Pinch valve control examples“ technical in-
formation sheet at www.pinch-valve.com for control recommen-
dations.
3.2 Technical data
Control medium Compressed air, neutral gases,
water
Installation position Any (also see section 4.3)
Flow direction Any
Medium Gaseous, liquid, solids
3.3 Operating data
Operating pressure (A) Can be read o󰀨 the type plate
∟ Excess pressure (pos. o. neg.) / relative pressure
Control pressure (C) See calculation example:
safety instructions and type plate
Di󰀨erential pressure (B) Can be read o󰀨 the type plate
Temperature range Can be read o󰀨 the type plate
Please contact AKO immediately if the type plate is missing.
WARNING! Risk of injury
Incorrect operating conditions could result in injury
to persons, as well as damage to the system and
the pinch valve.
Note
Maximum operating conditions (temperature/
pressure/ environmental inuences) must not be
exceeded or exceeding these operating data must
be prevented in the plant.
Example: Pipe trace heating is recommended for pinch val-
ves operated at temperatures below -10° C.
Supplementary technical data for the individual pinch valves can
be found in the respective data sheet.

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
9
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
4. Assembly
4.1 Preparation
A function test must always be performed before tting the pinch
valve.
It is important to ensure that there is not any po-
tentially explosive atmosphere.
All pneumatic hoses/lines in the pneumatic con-
trol system must be electrostatically conductive
(<10^6 Ohm) (not included in the delivery) and in-
tegrated into the potential equalisation.
If the pinch valve is installed into a plant with cat-
hodic corrosion protection by the operator, there must be no
mutual interference. If necessary, insulation pieces should be
tted outside the Ex zone.
4.2 Mechanical connections
WARNING! Risk of injury
The use of unsuitable lifting devices or load hand-
ling equipment could possibly result in severe pos-
tural deformity when handling air operated pinch
valves from DN 150.
ÎUse suitable lifting devices and load handling equip-
ment.
ÎRegularly instruct and train assembly personnel in ac-
cordance with accident prevention regulations.
WARNING! Noise emission
Unusual noises can indicate faulty connection of
the air operated pinch valve to the pipe/hose or the
compressed air supply or a faulty sleeve.
ÎIf necessary, repeat the assembly in accordance with
the instructions.
ÎCarry out regular maintenance as a precautionary mea-
sure.
ÎConnect the factory pre-assembled pinch valve to the
plant connections.
ÎAvoid tension and impacts from external forces and mo-
ments.
ÎIt must be ensured when tting the air operated pinch val-
ve that no damage is caused to the pipe (structural ana-
lysis).
ÎThe air operated pinch valve must be securely connected
to the pipe so that it can neither fall down by itself nor
bend, break or cause other parts of the pipeline to fall
down.
ÎAppropriate supports are to be provided depending on the
weight of the pinch valve and when several pinch valves
are tted sequentially.
ÎThe assembly must not cause any leakages in the pipe-
line system.
ÎVibrations in the plant can cause the destruction of the
pinch valve or the connections.
ÎThere must be at least twice the face-to-face length of
the pinch valve between an elbow and the pinch valve as
a shorter pipe length will lead to premature wear on the
sleeve and ange because of the turbulence generated.
ÎAppropriate supports are to be provided depending on
the respective weight of the pinch valve and when several
pinch valves are tted sequentially.
Internal thread connection
according to DIN EN ISO 228 (G) or ANSI/ASME B1.20.1 (NPT)
Use a suitable sealant for the threaded connection seal, such as
a PTFE sealing strip.
ÎPinch valves series VMP/VMC: Install by hand or with a
strap spanner.
ÎPinch valves series VM/VMF: Secure the connection thread
on the pinch valve against rotation with a suitable open-end
wrench to prevent the sleeve turning when it is being instal-
led.
Flange connection
according to DIN EN 1092-1 PN 10/16 or ANSI B 16.5/150 lbs
Use suitable, standard ange seals to seal the ange connec-
tions. An additional ange seal is not needed when pinch valves
have a ange sleeve. Make sure that the ange surfaces are
clean and undamaged. Use ange screws in accordance with the
relevant standards, You can calculate the length of the screws
based on the thickness of the ange using the data sheet for the
pinch valve. Tighten the screws evenly and crossways, initially
50% and then 80%. Re-tighten the screws once or several times
during commissioning if necessary to ensure the sealing e󰀨ect.
Other connections (e.g. threaded spigot, weld-on ends, tri-
clamp connection, tankers ange)
Connect all other connections in accordance with their intended
purpose and according to general engineering practice.
4.3 Connection for the control pressure line
Connect the pinch valve to the control pressure line. Adjust the
dened control pressure on the pressure regulating valve/pres-
sure limiter.

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
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Operating Manual BA_pV_DIV_EN_2022-04-12
10
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Compressed air as a control medium
The control pressure line is to be installed in the pipe in such a
way that any condensation can run out of the pinch valve. A water
separator should always be provided upstream of the pinch valve.
Water as a control medium
control valves must be suitable for water and have a su󰀩ciently
large cross-section. This inuences the closing / opening time of
the pinch valve and therefore also the service life of the sleeve.
5. Commissioning
No objects (e.g. screws, tools) are permitted in the
interior of the system during work.
5.1 Requirements
Only put the pinch valve into operation when the following mea-
sures have been taken:
ÎPinch valve must be securely attached with the designated
connections.
ÎA pressure regulating valve/pressure limiter must be instal-
led and adjusted in the control pressure line.
ÎAny safety devices required must be in place and fully func-
tional.
ÎThe operator must demonstrate that the pumping medium is
compatible with the pinch valve materials.
ÎThe functionality of all system parts has been tested. The
system should be shut down immediately in the event of da-
mage.
Note
Before commissioning, the entire pinch valve must
be checked for seal tightness with connecting
parts.
In case of explosive or toxic pumped media, conduct the con-
trol air into a separate, closed exhaust air system to prevent
a possible escape into the atmosphere in case of a sleeve
defect.
5.2 Normal operation
Use the pinch valve exclusively for its designated purpose. Fol-
low the safety instructions.
Safety and protective devices or warning signs tted to the pinch
valve must not be removed. The pinch valve has no control pres-
sure in an open position. It closes only when the optimum control
pressure is applied.
The pinch valve must be relieved of any pressure immediately
and taken out of operation immediately in case of damage.
Check the pinch valve sleeve if the level drops below or exceeds
the permissible operating/control pressure or the permissible
operating temperature.

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
11
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
6. Maintenance and Repair
6.1 General specications
Carry out maintenance and repair work only when the control
pressure has been released. The system must be shut o󰀨 and
depressurised. The control pressure line must be disconnected
from the pinch valve. The power supply to the attachments (e.g.
on the pressure switch) must be disconnected.
It is important to ensure that there is not any poten-
tially explosive atmosphere.
Precautions must be taken (e.g. personal protective equipment)
if dangerous substances may escape whilst carrying out mainte-
nance work on the pinch valve.
Please refer to the respective safety data sheet for specications,
safety instructions and warnings related to the pumping medium.
All individual components must be regularly inspected for dama-
ge and replaced if any damage or wear is identied.
6.2 Inspection
The service life of the sleeve is dependent on the control pres-
sure, quality of the sleeve, operating temperatures, pumping me-
dium, nominal size, load change duration/frequency, control and
its components.
ÎCheck the proper function of the pinch valve every 3 months.
Depending on the operating conditions, a functional check at
di󰀨erent/shorter intervals may be required.
ÎDetermine the inspection intervals depending on the opera-
ting conditions and the frequency of the operation.
ÎCheck the sleeve at regular intervals for wear and damage.
ÎCheck that the optimal control pressure is set correctly and
that the connections and joints on the pinch valve are tted
correctly and sealed.
6.3 Maintenance intervals
The operator is responsible for the creation of a maintenance
plan that includes the maintenance intervals (see information on
the service life of the sleeves in section 6.2).
ÎCreate a maintenance plan based on the information gathe-
red in the inspections.
6.4 Repair work
WARNING! Hearing damage
In the event of faulty assembly when replacing the
sleeve, the sleeve can slip out. If the sleeve slips
out of the valve, air will suddenly be discharged
(loud bang).
ÎWork carefully.
ÎCheck the correct tting of the sleeve before completing
the functional test.
ÎWear hearing protection.
Damaged sleeves, connections and joints as well as protection
and safety settings must be repaired immediately or replaced
with original spare parts.
The pinch valve must not be used until the proper function of the
plant has been fully restored.
The potential equalisation for all system parts
must be fully restored after the maintenance work.
7. Malfunctions
A list with possible malfunctions, causes and their solution can be
found in the appendix.
8. Storage
Store the pinch valve and replacement sleeves at room tempera-
ture in a dry and dust-free environment, protected from UV radia-
tion. A storage time of 2 years should not be exceeded because
the technical properties will increasingly deteriorate as the sto-
rage time lengthens due to the ageing process of the elastomers
(e.g. sleeves).
Longer storage time -> shorter service life
9. Disposal
Pinch valves can be recycled. The environmental guidelines in
force at the operator‘s location are applicable for the disposal.

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
12
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
10. Additional Documentation
The following documents are available on the internet at http://
www.pinch-valve.com/downloads/air-operated-pinch-valves.html
or on request.
ÎQuick instructions (BAK_pV_...)
ÎData sheets (DB_pV_...)
ÎTechnical information sheets (TI_pV_...)
ÎCodication lists (KL_pV_...)
ÎDeclarations of conformity (KE_pV_...)
ÎDeclarations of incorporation (EE_pV_...)
ÎCerticates (HB_pV_...)
The required document can be identied based on the part num-
ber (see order, delivery note, invoice or type plate). It is coded.
Example:
VMC100.03x.50F.50LA
Series Connection option (type)
A detailed breakdown can be found in the codication lists (KL_
pV_...).

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
13
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
11. Instandhaltungs- / Reparaturanleitung
11.1 General principles for tting the pinch valves
Structure shown for series VF+VT, DN40 to 300
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
1Control air connection
2Body
3Flange*
4Sleeve*
5Screws*
* Wear parts
1Control air connection
2Body
3Socket end cover / ange*
4Sleeve*
5Screws*
1Control air connection
2Body
3Socket end cover / ange*
4Sleeve*
5Screws*
Structure shown for series VMC, DN10 to 50 (F, FA, G, M, N, R, RA, T, TA)
Structure shown for series VMC, DN65 to 100 (F, FA, G, M, N, R, RA, T, TA, FT), + VMCE + VT

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
14
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Structure shown for series VMC, DN125 to DN150 (F, FA, G, M, N, R, RA, T, TA)
1Control air connection
2Body
3Flange*
4Sleeve*
5Mounting discs
6Screws*
1Control air connection
2Body
3Socket end cover / ange*
4Sleeve*
5Pressure zone ring
6O-ring body*
7Screws*
1Control air connection
2Body
3Socket end*
4Sleeve*
5Coupling nut
Structure shown for series VMP, DN10 to DN50
Structure shown for series VM+VMF, DN10 to 50
11.2 General principles for the maintenance /
repair of the pinch valves
ÎUse only AKO assembly paste and no adhesive, grease or
oil!
ÎDo not use any sharp or pointed objects during assembly to
avoid damage to the sleeve/valve!
ÎAssembly aids or kits can be ordered.
* Wear parts
5
4
3
2
1
5
4
3
2
6
7
1
5
4
3
2
6
1

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
15
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Dismantling
Place the pinch valve facing up-
wards and hold it tightly on the
body. Loosen the nuts crossways
with a spanner (SW19). Then turn
the pinch valve and also loosen all
screws crossways.
11.3 Air operated Pinch Valve series VF,
DN 40-80
Push or pull the sleeve out of the
body. Use a pipe wrench if neces-
sary.
This is made easier by using AKO
assembly paste (MP200/MPL200)
as lubrication between the sleeve
and body.
Clean all individual parts afterwards and check the parts for da-
mage as well as for ageing and porosity. Replace damaged parts.
Apply AKO assembly paste
(MP200/MPL200) to the inside of
both ends of the sleeve and to the
cones of the anges.
Assembly
Insert the sleeve into the body until
it protrudes evenly at both ends.
Use a little AKO assembly pas-
te (MP200/MPL200) between the
sleeve and body in case of sti󰀨-
ness.
Assembly aid:
AKO assembly paste MP200 or
AKO assembly paste MPL200 for the food sector
Lift both anges o󰀨 the valve unit.
Use a slot screwdriver to do this if
necessary.
Push the ange opposite the xing
screw into the sleeve and tighten
the second screw, washer and nut
by the length of a nut.
Turn the valve unit 180° and posi-
tion it again.
Repeat the process for the second
ange.
Now tighten the screws alternate-
ly and crossways on both sides to
max. 30 Nm until the anges rest
on the body.
Check the function of the pinch val-
ve by closing the pinch valve with
minimal control pressure. Make
sure that it closes correctly to form
a lip shape.
Push one ange diagonally into
the sleeve and x it in a mounting
screw hole with a screw, washer
and nut. Turn the nut approximately
the length of a nut.
If necessary, lubricate the screws
with suitable grease before scre-
wing them in.
http://www.pinch-valve.com/videos.html

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
16
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Dismantling
Place the pinch valve facing
upwards and hold it tightly on the
body. Loosen the screws cross-
ways with a spanner (SW19).
Then turn the pinch valve and also
loosen all screws crossways.
11.4 Air operated Pinch Valve series VF,
DN100-300
Use AKO assembly paste (MP200/
MLP200) as lubrication between
the body and sleeve.
Clean all individual parts afterwards and check the parts for da-
mage as well as for ageing and porosity. Replace damaged parts.
Slide or push the sleeve into the
body until it protrudes evenly at
both ends.
Assembly
Lubricate the following parts with
AKO assembly paste (MP200/
MPL200):
• Inside and outside of the slee-
ve on both ends
• Cones of both anges
• Inner neck of the body on both
sides
Assembly aids:
Assembly kit incl. assembly paste MP200 or MPL200 for the
food sector, AKO assembly pipe, AKO assembly board, screws
for pre-assembly
Now lift both anges o󰀨 the valve
unit. Use a slot screwdriver to do
this if necessary.
Turn the valve unit 180° and repeat
the process with the second ange.
Tighten the screws until there is
slight pressure on the sleeve.
Slide the assembly pipe into the
valve. Apply approx. 2 bar of air to
the body via the control air connec-
tion (varies depending on the nomi-
nal size).
Push the sleeve over the ange
cone using a ring spanner (SW19).
Make sure that the sleeve is pro-
truding evenly (approx. 5-7 mm) on
both sides.
http://www.pinch-valve.com/videos.html
Place one ange on the sleeve, pla-
ce the screws for pre-assembly into
the holes and tighten the nuts with
washers by hand until there is no
play between the ange cone and
sleeve.
Push or pull the sleeve out of the
body. Use a pipe wrench or another
suitable tool if necessary.
If necessary, lubricate the screws with suitable grease before
screwing them in.
Tighten the screws for pre-assembly on both sides with a span-
ner (SW19).
Release the control air from the body. Remove the assemb-
ly pipe. Place the mounting screws into the remaining moun-
ting holes on each ange side and tighten them. Replace the
screws for pre-assembly with mounting screws on each ange
and tighten them as well.
Now tighten the screws alternately and crossways on both si-
des to max. 30 Nm until the anges rest rmly on the body.
Check the function of the pinch valve.
Insert the assembly board into the
valve so that the narrow side of the
board is facing the air connection.
Hold the assembly board rmly. Ap-
ply the minimal control pressure to
the body. Make sure that it closes
correctly to form a lip shape.
Repeat the process two or three times to give the sleeve the
optimum closing direction.

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
17
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Dismantling
Place the pinch valve facing up-
wards and hold it tightly on the body.
Loosen the screws crossways with
a ratchet or spanner (T30 Torx bit or
SW10 Allen key).
Then turn the pinch valve and also
loosen all screws crossways.
11.5 Air operated Pinch Valve series VMC,
DN10-50, type F, FA, G, M, N, R, RA, T, TA
Lift both the socket end cover and
ange o󰀨 the valve unit. Use a slot
screwdriver to do this if necessary.
Clean all individual parts afterwards and check the parts for da-
mage as well as for ageing and porosity. Replace damaged parts.
Assembly
Slide the sleeve into the body until
the bottom edge is sitting ush and
the sleeve is protruding upwards by
approx. 3-7 mm.
Use a little AKO assembly pas-
te (MP200/MPL200) between the
sleeve and body in case of sti󰀨-
ness.
Assembly aid:
AKO assembly paste MP200 or MPL200 for the food sector
Position the valve unit with one
hand and hold it rmly. Insert the
socket end cover/ange diagonally
into the sleeve with your other hand
and push in the socket end cover/
ange.
Align the socket end cover/ange
with the screw holes ush with the
holes in the body. Insert the screws
into the designated holes.
With type M, insert the screws into
the socket end cover/ange before
tting it.
http://www.pinch-valve.com/videos.html
Apply AKO assembly paste
(MP200/MPL200) to the inside of
both ends of the sleeve and to the
cone of the socket end cover/an-
ge.
Push or pull the sleeve out of the
body. Use a pipe wrench if neces-
sary.
This is made easier by using AKO
assembly paste (MP200/MPL200)
as lubrication between the sleeve
and body.
If necessary, lubricate the screws with suitable grease
before screwing them in.
Push and hold the socket end co-
ver/ange and tighten the screws
crossways with a ratchet or span-
ner until the socket end cover/an-
ge are sitting on the body. Check
all screws have an adequate tight-
ening torque (max. 6 Nm).
Turn the valve unit 180° and posi-
tion it again.
Repeat the process for the second
socket end cover/ange.
Check the function of the pinch val-
ve by closing the pinch valve with
minimal control pressure. Make
sure that it closes correctly to form
a lip shape.

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
18
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Dismantling
Place the pinch valve facing up-
wards and hold it tightly on the
body. Loosen the screws cross-
ways with a spanner (SW16).
Then turn the pinch valve and also
loosen all screws crossways.
11.6 Air operated pinch valves series VMC,
DN65-80, Type F, FA
Lift both anges o󰀨 the valve unit.
Use a slot screwdriver to do this if
necessary.
Clean all individual parts afterwards and check the parts for da-
mage as well as for ageing and porosity. Replace damaged parts.
Assembly
Slide the sleeve into the body until
the bottom edge is sitting ush and
the sleeve is protruding upwards by
approx. 5-6 mm.
Use a little AKO assembly pas-
te (MP200/MPL200) between the
sleeve and body in case of sti󰀨-
ness.
Assembly aids:
AKO assembly paste MP200 or MPL200 for the food sector, if
necessary 4 no. M10x30 ISO 4017 screws for pre-assembly Place the ange onto a stable sur-
face with the sealing surface facing
downwards and the cone facing up-
wards. Take the body with the inser-
ted sleeve and position the 5-6 mm
protruding sleeve end diagonally on
the ange cone. Push the body with
the sleeve rmly over the cone.
Apply AKO assembly paste
(MP200/MPL200) to the inside of
both ends of the sleeve and to the
ange cone.
Push or pull the sleeve out of the
body. Use a pipe wrench if neces-
sary.
This is made easier by using AKO
assembly paste (MP200/MPL200)
as lubrication between the sleeve
and body.
If necessary, lubricate the screws with suitable grease before
screwing them in.
Align the body with the through ho-
les with the threaded ange holes.
Push and hold the body, insert the
screws and tighten them crossways
with a spanner until the screws are
sitting in the threaded ange holes.
Turn the valve unit 180° and posi-
tion it again.
Repeat the process with the se-
cond ange.
Check all screws have an adequate
tightening torque (max. 20 Nm).
Check the function of the pinch val-
ve by closing the pinch valve with
minimal control pressure. Make
sure that it closes correctly to form
a lip shape.
http://www.pinch-valve.com/videos.html

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
19
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Dismantling
Place the pinch valve facing up-
wards and hold it tightly on the
body. Loosen the screws and nuts
crossways with a spanner (SW16 +
FT=hexagon socket wrench 8).
Then turn the pinch valve and also
loosen all screws crossways.
11.7 Air operated pinch valves series VMC,
DN65-80, Type G, M, N, R, RA, T, TA, FT
Lift both covers o󰀨 the valve unit.
Use a slot screwdriver to do this if
necessary.
Clean all individual parts afterwards and check the parts for da-
mage as well as for ageing and porosity. Replace damaged parts.
Assembly
Slide the sleeve into the body until
the bottom edge is sitting ush and
the sleeve is protruding upwards by
approx. 5-6 mm.
Use a little AKO assembly pas-
te (MP200/MPL200) between the
sleeve and body in case of sti󰀨-
ness.
Assembly aids:
AKO assembly paste MP200 or MPL200 for the food sector,
if necessary 4 no. M10x45 ISO 4017 screws for pre-assembly
(FT=DIN912) Place the valve unit so that the
protruding sleeve end is at the top.
Push one cover diagonally into the
sleeve and x it in a screw hole with
a screw for pre-assembly, washer
and nut. Turn the nut approximately
the length of a nut.
Apply AKO assembly paste
(MP200/MPL200) to the inside of
both ends of the sleeve and to the
cover cone.
Push or pull the sleeve out of the
body. Use a pipe wrench if neces-
sary.
This is made easier by using AKO
assembly paste (MP200/MPL200)
as lubrication between the sleeve
and body.
If necessary, lubricate the screws with suitable grease
before screwing them in.
Align the cover with the screw holes
ush with the holes in the body and
push the cover into the sleeve. In-
sert the screws with washer and nut
into the designated holes.
Push and hold the cover and tight-
en the screws and nuts crossways
with a spanner (SW16 + FT=hexa-
gon socket wrench 8) until the co-
ver is sitting on the body.
Turn the valve unit 180°.
Repeat the process for the second
cover.
Check all screws have an adequate
tightening torque (max. 20 Nm).
Check the function of the pinch valve by closing the pinch valve
with minimal control pressure. Make sure that it closes correct-
ly to form a lip shape.
http://www.pinch-valve.com/videos.html

AKO Armaturen & Separationstechnik GmbH
Adam-Opel-Str. 5
65468 Trebur-Astheim
GERMANY
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.pinch-valve.com Shop: www.ako-shop.com
Operating Manual BA_pV_DIV_EN_2022-04-12
20
Air Operated Pinch Valves
Operating Manual
for air operated pinch valves
Dismantling
Place the pinch valve facing up-
wards and hold it tightly on the
body. Loosen the screws cross-
ways with a spanner (SW19).
Then turn the pinch valve and also
loosen all screws crossways.
11.8 Air operated pinch valves series VMC,
DN100, Type F, FA
Lift both anges o󰀨 the valve unit.
Use a slot screwdriver to do this if
necessary.
Clean all individual parts afterwards and check the parts for da-
mage as well as for ageing and porosity. Replace damaged parts.
Assembly
Lubricate the following parts with
AKO assembly paste (MP200/
MPL200):
• Inside and outside of the slee-
ve on both ends
• Cones of both anges
• Inner neck of the body on both
sides
Assembly aids:
Assembly kit incl. assembly paste MP200 or MPL200 for the
food sector, AKO assembly pipe, AKO assembly board, screws
for pre-assembly
Place the ange onto a stable sur-
face with the sealing surface facing
downwards and the cone facing up-
wards. Take the body with the inser-
ted sleeve and position the evenly
protruding sleeve end diagonally on
the ange cone. Push the body with
the sleeve rmly over the cone.
Use your thumb to push the old
sleeve out of the body. Use AKO
assembly paste (MP200/MLP200)
as lubrication between the body
and sleeve.
If necessary, lubricate the screws with suitable grease before
screwing them in.
Insert the second screw for pre-
assembly diagonally and tighten it
slightly.
Turn the valve unit 180° and repeat
the described process for the se-
cond ange.
Insert the assembly pipe into the
centre of the valve. Apply approx. 2
bar of air to the body via the control
air connection.
Make sure that the sleeve is protru-
ding evenly on both sides. Tighten
the screws for pre-assembly with a
spanner.
Now tighten the screws alternately and crossways on both si-
des to max. 30 Nm until the anges rest on the body. Check
the function of the pinch valve by closing the pinch valve with
minimal control pressure. Make sure that it closes correctly to
form a lip shape.
Remove the old sleeve with a pipe
wrench or another suitable tool.
Slide or push the sleeve into the
body and centre the sleeve until it
protrudes evenly at both ends.
Release the control air from the
body. Remove the assembly pipe.
Place two mounting screws per
ange side into the other two ho-
les and tighten them. Replace
the screws for pre-assembly with
mounting screws on each ange.
If there is a triangular closing pat-
tern, correct this using an assembly
board. Position the assembly board
with the narrow side in alignment
with the control air connection and
hold it tightly.
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