TapFlo CTM20-7 User manual

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Pump models:
CTM20-7
CTM25-8
CTM25-10
CTM32-12.5
CTM40-12.5
CTM50-12.5
CTM Magnetic Drive
Centrifugal Pumps
Original Instruction
edition 2017 rev 1
Read this instruction manual carefully,
before you install and operate the pump

CONTENTS
IOM manual CTM mag drive pumps 1
0. GENERAL....................................................................................................................................4
0.1. Introduction...............................................................................................................................4
0.2. Warning symbols ......................................................................................................................4
0.3. Qualification and training of personnel..................................................................................4
1. INSTALLATION ................................................................................................................................. 5
1.1. Operation principle...................................................................................................................5
1.2. Receiving inspection.................................................................................................................5
1.3. Storage.......................................................................................................................................6
1.4. Foundation ................................................................................................................................6
1.5. Environment ..............................................................................................................................6
1.6. Suction and discharge piping ..................................................................................................6
1.6.1. Connection of discharge pipe ......................................................................................... 6
1.6.2. Connection of suction pipe ............................................................................................. 7
1.7. Health and safety ......................................................................................................................7
1.7.1. Protection ......................................................................................................................... 7
1.7.2. Electrical safety ................................................................................................................ 7
1.7.3. Chemical hazard ............................................................................................................... 7
1.7.4. Dry running ...................................................................................................................... 7
1.7.5. Noise level ........................................................................................................................ 8
1.7.6. Temperature hazards....................................................................................................... 8
1.7.7. Rotating parts................................................................................................................... 8
1.7.8. Powerful magnetic field .................................................................................................. 8
1.8. Solids..........................................................................................................................................8
1.9. Example of installation.............................................................................................................9
1.10. Instruments..............................................................................................................................10
1.10.1. Electric power ................................................................................................................. 10
1.10.2. Optional instruments..................................................................................................... 10
1.10.3. Thermometer.................................................................................................................. 10
1.11. Motor connection ...................................................................................................................10
2. OPERATION .................................................................................................................................... 11
2.1. Start-up....................................................................................................................................11
2.1.1. Starting the pump.......................................................................................................... 11
2.1.2. Restarting after power shut-off.................................................................................... 12
2.2. Stopping the pump.................................................................................................................12
3. MAINTENANCE .............................................................................................................................. 13

CONTENTS
IOM manual CTM mag drive pumps 2
3.1. Inspections...............................................................................................................................13
3.2. Location of faults ....................................................................................................................14
3.3. Disassembly of the pump.......................................................................................................15
3.3.1. Disassembly procedure.................................................................................................. 15
3.4. Assembly of the pump............................................................................................................18
3.4.1. Test run ........................................................................................................................... 18
4. SPARE PARTS.................................................................................................................................. 19
4.1. Spare parts drawing................................................................................................................19
4.2. Spare parts list.........................................................................................................................19
4.3. Recommended spare parts.....................................................................................................20
4.4. How to order parts..................................................................................................................20
5. DATA ............................................................................................................................................... 21
5.1. Pump code...............................................................................................................................21
5.2. Dimensions ..............................................................................................................................22
5.3. Materials, data and limits.......................................................................................................23
5.4. Mounting torques and dimensions of screws/nuts .............................................................23
5.5. Performance curves ................................................................................................................24
5.6. Permitted loads on inlet and outlet ......................................................................................25
6. WARRANTY .................................................................................................................................... 26
6.1. Returning parts .......................................................................................................................26
6.2. Warranty ..................................................................................................................................26
6.3. Warranty form.........................................................................................................................28

www.tapflo.com
EC DECLARATION OF CONFORMITY 01/EC/CT/2016
Series: CTH…; CTI...; CTM…; CTV…; CTS…
Manufactured by Tapflo Sp. z o.o., Poland for:
Tapflo AB
Filaregatan 4
4434 Kungälv, Sweeden
This declaration of conformity is issued under the sole responsibility of the manufacturer.
Object of declaration: SINGLE STAGE CENTRIFUGAL PUMPS
The object of the declaration described above is in conformity with the relevant Union
harmonisation legislation:
•Directive 2006/42/EC of European Parliament and of the Council of 17 May 2006 on
machinery, amending Directive 95/16/EC;
•Directive 2014/35/UE of the European Parliament and of the Council of 14 February 2014
on harmonization of the laws of Member States relating to electrical equipment designed
for use within certain voltage limits;
Year of CE marking:
CTV –CE08 CTI/CTH –CE10
CTM –CE09 CTS –CE14
Tapflo AB, April 16th, 2016
Håkan Ekstrand
Managing director

0. GENERAL
IOM manual CTM mag drive pumps 4
0. GENERAL
0.1. Introduction
CTM is a compact and reliable magnetically driven centrifugal pump made in PP and PVDF.
With proper attention to maintenance, CTM pumps will give efficient and trouble free
operation. This instruction manual will familiarise operators with detailed information about
installing, operating and maintaining the pump.
0.2. Warning symbols
The following warning symbols are present in this instruction manual. This is what they say:
This symbol stands next to all safety instructions in this instruction manual
where danger to life and limb may occur. Observe these instructions and
proceed with utmost caution in these situations. Inform also other users of all
safety instructions. In addition to the instructions in this instruction manual, the
general safety and accident prevention regulations must be observed.
This signal stands at points in this instruction manual of particular importance
for compliance with regulations and directives, for correct work flow and for the
prevention of damage to and destruction of the complete pump or its
subassemblies.
This symbol indicates possible danger caused by strong magnetic field in the
vicinity of the pump.
This symbol signals possible danger caused by the presence of electric fields or
live wires.
0.3. Qualification and training of personnel
The personnel in charge of installation, operation and maintenance of the pumps we
produce must be qualified to carry out the operations described in this manual. Tapflo shall
not be held responsible for the training level of personnel and for the fact that they are not
fully aware of the contents of this manual.

1. INSTALLATION
IOM manual CTM mag drive pumps 5
1. INSTALLATION
1.1. Operation principle
In the CTM pump the torque from the motor shaft is transmitted to the impeller by means
of a magnetic coupling. The drive magnet (1) is fixed on the motor shaft. The magnets
installed in the drive magnet and in the impeller/magnet assembly (2) have different polarity.
When the pump is at rest, the magnets of both parts are aligned. When the motor is started
and the drive magnet starts to rotate, the magnets create an attraction and repulsion force
thus forcing the impeller to rotate. If the impeller gets blocked or the pumped liquid will be
too dense and too much torque will be generated on the motor shaft, the magnet will de-
couple and no damaged will be done to the motor. When the pump will come to a stop, the
magnets will re-couple. Between both magnet assemblies there is located an isolation shell
(3) that separates the liquid side from the motor side.
1.2. Receiving inspection
Although precaution is taken by us when packing and shipping, we urge you to carefully
check the shipment on receipt. Make sure that all parts and accessories listed on the packing
list are accounted for. Immediately report any damage or shortage to the transport company
and to us.

1. INSTALLATION
IOM manual CTM mag drive pumps 6
1.3. Storage
If the equipment is to be stored prior to installation, place it in a clean location. Clean the
pump thoroughly before installation.
1.4. Foundation
The pump-motor unit must stand on and be fixed to a sufficiently rigid structure that can
support the entire perimeter on which the unit stands. The foundation on a firm bottom is
the most satisfactory. Once the pump is in position, adjust level with metal shims between
the feet and the surface on which it stands. Check that the feet of the pump-motor unit stand
well on each of them. The surface on which the foundation stands must be flat and horizontal.
If the unit is fitted on a steel structure, make sure that it is supported so that the feet do not
warp. In any case, it is advisable to fit some anti-vibration rubber pieces between the pump
and the brickwork.
For close-coupled type, pump motor alignment is not required.
1.5. Environment
➢There should be enough space in the vicinity of the pump in order to operate, maintain
and repair it.
➢The area in which the pump is operated, must be sufficiently ventilated. Excessive
temperature, humidity or dirt may affect the pump operation.
➢Behind the cooling fan of the motor there must be sufficient room for the hot air to
escape the motor.
1.6. Suction and discharge piping
A pump is generally part of a piping system that can include a number of components such
as valves, fittings, filters, expansion joints, instruments, etc. The way the piping is arranged
and the positioning of the components has a great influence on the operation and the
lifetime of the pump. The pump cannot be used as a support for the components connected
to it.
The flow of liquid from the pump must be as even as possible. It is advisable to avoid any
tight bends or drastic reductions of diameters that may cause flow resistance in the
installation. In case of diameter reduction, it is advisable to use appropriate conical reductions
(possibly eccentric on suction side and concentric on discharge side) at changes of diameter
and at a minimum distance from pump connections of five diameters.
1.6.1. Connection of discharge pipe
A shut-off / regulation valve is normally fitted on the discharge side. It cuts off the pump
from the line and adjusts the output. Never adjust flow rate using the valve on the suction
pipe.

1. INSTALLATION
IOM manual CTM mag drive pumps 7
1.6.2. Connection of suction pipe
The suction piping is very important for the correct operation of the pump assembly. It must
be as short and as direct as possible. If a longer suction line is unavoidable, the diameter
should be large enough, i.e. at least as the inlet connection on the pump, to ensure less flow
resistance. In any case, suction must be carried out properly avoiding any air locks.
The CTM pumps are single-stage centrifugal type, thus non self-priming. It will therefore
always be necessary to install a bottom valve in all cases when the static height of the liquid
is lower than the suction height of the pump. The suction piping must be without air inlets
that are more probable with long suction lines or if suction occurs with negative head. Critical
points in these terms are also the seals between flanges and the seals of the valve stems.
Even a bit of air let into the suction line can cause serious operating problems that can make
the pump stop.
1.7. Health and safety
The pump must be installed according to local and national safety rules.
The pumps are constructed for particular applications. Do not use the pump on
applications different from that for which it was sold without consulting us to ascertain
its suitability.
1.7.1. Protection
In the interest of health and safety it is essential to wear protective clothing and safety
goggles when operating, and/or working in the vicinity of Tapflo pumps.
1.7.2. Electrical safety
Do not carry out any maintenance or/and operation on the pump while it is running or before
it has been disconnected from the power supply. Avoid any danger caused by electric power
(for details see current regulations in force). Check that electrical specifications on the motor
nameplate are equivalent to the power supply to which it will be connected.
1.7.3. Chemical hazard
Whenever the pump is to be used for pumping a different liquid, it is essential to clean the
pump beforehand in order to avoid any possible reaction between the two products.
Before pump disassembly clean it thoroughly.
1.7.4. Dry running
Do not start nor carry out running tests before filling the pump with liquid. Always avoid dry
operation of the pump. Start the pump when it is completely filled and with the valve on the
discharge side almost completely closed.

1. INSTALLATION
IOM manual CTM mag drive pumps 8
1.7.5. Noise level
CTM pumps, including the motor, in normal operating conditions produce a sound level
below 80 dB(A). The major sources of noise are: liquid turbulence in the installation, cavitation
or any other abnormal operation that is independent from the pump construction nor the
pump manufacturer. The user must provide suitable protective means if the sources of noise
could produce a harmful noise level for operators and for the environment (in compliance
with current local regulations).
1.7.6. Temperature hazards
Raised temperature can cause damage on the pump and/or piping and may also be
hazardous for personnel in the vicinity of the pump/piping. The hot or cold parts of the
machine must be protected to avoid accidental contacts
1.7.7. Rotating parts
Do not tamper with the protection of the rotating parts, do not touch or approach rotating
parts in movement.
1.7.8. Powerful magnetic field
Magnetically driven pumps use high intensity magnets. All pacemaker carriers must not
approach magnetic components; intense magnetic field can disturb heart pace.
1.8. Solids
It is not recommended to use liquid with suspended solids, especially if sensitive to
magnetism. In case dirty liquids are to be pumped and this was not mentioned at the time
of ordering, it is necessary to contact Tapflo technical service before activating the pump.
Acceptable solid size for all CTM pumps is 0,1 mm (100 microns).
Maximum solids concentration by weight is 2%.

1. INSTALLATION
IOM manual CTM mag drive pumps 9
1.9. Example of installation
1) YES: Gate valve (may also be near pump in case of long piping)
2) With positive head: tilt of piping towards pump
3) YES: line strainer if particles are present
4) NO: air pockets –the circuit must be short and straight
5) YES: pipe fastening
6) Suction line as short and direct as possible
7) YES: adjusting gate valve on outlet
8) Bends placed after valves and instruments
9) YES: attachment for gauge or safety pressure switch
10) NO: elbow joints (and other parts) on the pump (discharge and suction lines)
11) YES: check valve (with negative suction lift)
12) YES: strainer if particles are present
13) Suction head varies according to flow in order to prevent windage
14) Suction head
15) Immersion depth
16) YES: expansion joint (necessary with long pipes or hot liquids) and/or anti-vibration
facility during discharge and suction; anchored near to pump
17) YES: overcoming obstacles at lower depths
18) Fix the pump by the fixing holes provided: the supports must be level

1. INSTALLATION
IOM manual CTM mag drive pumps 10
1.10. Instruments
In order to ensure a proper control of the performance and the conditions of the installed
pump, we recommend using the following instruments:
- a pressure-vacuum gauge on the suction piping;
- a pressure gauge on the discharge piping.
The instruments must be installed on straight pieces of piping at a distance not bigger than
five diameters of the pipeline from the pump connections. The pressure gauge on discharge
must always be fitted between the pump and the shut-off / regulation valve. The output can
be read on the pressure gauge, transformed into meters and then compared with the typical
curves.
1.10.1. Electric power
The electric power absorbed by the motor can be measured by means of a wattmeter.
1.10.2. Optional instruments
The optional instruments can indicate if pump is working in an abnormal way. The abnormal
conditions can be caused by: accidentally closed valves, lack of pumped liquid, overloads,
etc.
1.10.3. Thermometer
If the temperature of the pumped liquid is a critical parameter, provide the installation with
a thermometer (preferably on the suction side).
1.11. Motor connection
An expert electrician must always carry out the electrical connection. Compare the power
supply with the data plate specifications and then choose a suitable connection. The type of
connection is stated on the motor data plate and can be Y (star) or D (Delta), according to
the power supply of the motor (see table below).
STAR
DELTA
Follow the connection standard used in the plant. In no case connect the electrical motor
directly to supply network but use a suitable electric switchboard equipped with a knife
switch and suitable safety devices (e.g. motor breaker switches) in the power circuit. Safety

1. INSTALLATION
IOM manual CTM mag drive pumps 11
devices against overloads must also protect the motors. Make sure that the motor has
suitable grounding and that it has been connected properly.
2. OPERATION
2.1. Start-up
➢Check manually that the motor is free to turn by moving the motor cooling fan.
➢Make sure that the piping is not clogged and is free from residues or foreign objects.
Make sure that the liquid flows regularly into the pump.
➢The pump and piping connected to it, at least the suction pipe, must be full of liquid.
Any air or gas must be carefully released. In case of suction with negative head, fill the
suction piping and check how the bottom valve works. It must guarantee that the liquid
must not flow back, emptying therefore the suction pipe and eventually disconnection
of the pump.
➢The suction shut-off valve (if any) must be completely open.
➢The shut-off / regulation valve on the discharge side must be completely closed.
➢The motor must turn in the same direction as the arrow shown on the pump. The
direction of rotation is always clockwise looking at the pump from the motor side; check
by starting briefly, then looking at the direction of rotation of the motor fan through the
fan lid. If it is wrong, the motor must be stopped immediately. Change the connection
to the terminals of the electric motor (chapter 1.11 “Motor connection”) and repeat the
procedure described above.
➢Any auxiliary connections must all be connected.
2.1.1. Starting the pump
Start the electric motor and open the discharge adjustment/shutoff valve gradually until the
desired output has been reached. The pump must not turn more than two or three minutes
with discharge closed. A longer operation in these conditions can damage the pump
seriously.
If the pressure shown on the pressure gauge on the discharge piping does not increase, turn
off the pump immediately and release pressure carefully. Repeat the connection procedure.
If there are changes of flow rate, head, density, temperature or viscosity of the liquid, stop
the pump and get in touch with our technical service.

2. OPERATION
IOM manual CTM mag drive pumps 12
2.1.2. Restarting after power shut-off
In case of accidental stopping, make sure that the non-return valve has prevented backflow
and check that the motor cooling fan has stopped. Start the pump again following the
instructions of chapter 2.1.1 ”Starting the pump”.
2.2. Stopping the pump
It is advisable to close the discharge shut-off / regulation valve gradually and stop the motor
immediately after. The reverse sequence is not recommended, especially with larger pumps
or longer delivery piping. That is to avoid any problems due to water hammering. If a suction
shutoff valve has been installed, it is advisable to close it completely.

3. MAINTENANCE
IOM manual CTM mag drive pumps 13
3. MAINTENANCE
Maintenance work on electrical installations must be performed by qualified
personnel and only when the power supply has been shutoff. Follow the local
and national safety regulations.
3.1. Inspections
The CTM range pumps have been designed and tested to run for 5000 hours in ideal
working conditions. Please note that it is a conservative figure since the actual duty point of
your pump can substantially modify this value. Additional factors such as intermittent
operation, type of pumped liquid and installation in the plant may affect the life of
components that are subject to wear. In any case, Tapflo advises to service pumps every
year, even when used in ideal operating conditions.
➢Periodically check suction and discharge pressures.
➢Inspect the motor according to the instructions from the motor manufacturer.

3. MAINTENANCE
IOM manual CTM mag drive pumps 14
3.2. Location of faults
Leakage form the pump
Insufficient flow rate or pressure in pump
No pressure on the discharge side
Irregular discharge flow / pressure
Noise and vibrations
The pump gets clogged
Overheating of the pump
Abnormal wear
Bushing life too short
Possible reason
Solution
X
X
X
Wrong direction of rotation
Invert the direction of rotation
X
X
X
X
Insufficient suction head (NPSH)
Increase available NPSH:
➢Raise the suction reservoir
➢Lower the pump
➢Reduce the vapour pressure
➢Increase the diameter of the suction pipe
➢Make suction pipe short and direct
X
Pump is clogged
Clean the pump
X
X
X
X
X
Cavitation
Increase suction pressure
X
X
X
X
The pump sucks air
Make sure all connections are tight
X
X
X
Suction pipe is blocked
Check pipes / valves and filters on the suction
line
X
X
Discharge pressure too high
Reduce the head by increasing pipe diameter
and/or reduce number of valves and bends
X
X
Flow rate too high
Reduce the flow:
➢Partially close the discharge valve
➢Reduce the impeller diameter (contact us)
➢Reduce the rotation speed
X
X
X
X
X
X
Liquid temperature too high
Cool the liquid
X
X
Pump runs dry
Always fill pump before start-up
X
Wrong material of bushings for the liquid
Mount bushings in other material (contact us)
X
X
Loads on the pipes
Connect the pipes independent of the pump
X
X
X
X
Foreign objects in the liquid
Use a filter on the suction side
X
Shut-off valve closed on suction side
Check and open the valve
X
Discharge pressure too low
Increase the pressure –install an impeller with
a bigger diameter (contact us)
X
X
Pump is not filled with liquid
Fill pump with liquid
X
X
Liquid parameters different than calculated
Check pumped liquid parameters
X
X
Magnetic coupling damaged or insufficient
Check and replace magnet assemblies
X
Rotating unit out of balance
Check and replace magnet assemblies
X
X
Inner bushes worn or damaged
Check bushing and replace if necessary

3. MAINTENANCE
IOM manual CTM mag drive pumps 15
3.3. Disassembly of the pump
The disassembly should only be performed by qualified personnel.
Each operation carried out on the machine must always be carried out once all the electrical
contacts have been disconnected. The pump-motor unit must be placed in a position where
it cannot be started unintentionally.
Before servicing in any way the parts that come in contact with the pumped liquid, make sure
that the pump has been fully emptied and washed. When draining the liquid, make sure that
there is no danger for people or the environment.
The static and rotating bushings are usually made from very fragile sintered material and
therefore have to be handled with extreme care.
The numbers put in brackets, refer to the part numbers in the spare part drawings and spare
part lists in chapter 4“Spare parts”.
3.3.1. Disassembly procedure
Fig. 3.3.1
Unscrew the casing mounting screws [141] and take off
the pump casing [13].
Fig. 3.3.2
Pull out the front static bushing [1521] along with the
O-ring [1821].

3. MAINTENANCE
IOM manual CTM mag drive pumps 16
Fig 3.3.3
Pull out the impeller / magnet assembly [90] from the
isolation shell [12].
NOTE! Take extra care while proceeding with
this point. The magnetic field generated by the
magnets can cause finger seizure between the
impeller and the impeller [90] and isolation
shell [11].
Fig 3.3.4
Using a sharp tool take off the front rotating bushing
[1511].
NOTE! Level the bushing equally on each side.
Fig 3.3.5
Using a sharp tool take off the rear rotating bushing
[1512].
NOTE! Level the bushing equally on each side.
Fig 3.3.6
CTM20 –Remove the O-ring [1812] from the impeller /
magnet assembly.
CTM25/32 –Remove the O-rings [1811, 1812] from the
impeller / magnet assembly.
Fig 3.3.7
Remove the casing O-ring [18] form the isolation shell
[12].

3. MAINTENANCE
IOM manual CTM mag drive pumps 17
Fig 3.3.8
Take out the isolation shell [12] form the lantern [11].
Fig 3.3.9
Pull out the rear static bushing [1522] along with the O-
ring [1822].
Fig 3.3.10
Loosen the lock screws (2 x [161] on CTM20/25; 1 x
[1611] and 2 x [1612] on CTM32).
Fig 3.3.11
Take out the external magnet assembly [16] form the
lantern [11].
Fig 3.3.12
Unscrew the motor mounting screws [111] and remove
the lantern [11] form the motor.

3. MAINTENANCE
IOM manual CTM mag drive pumps 18
The pump is now completely disassembled. Check all components, especially the O-rings and
bushings, for wear or damage and replace if necessary.
The components that can affect the correct operation of the pump if not regularly replaced,
are:
CTM 20-7
➢Casing O-ring (18)
➢Rotating bushes (1511) + (1512)
➢Static bushes (1521) + (1522)
➢O-rings (1821) + (1812) + (1822)
CTM 25-8, 25-10, 32-12,5, 40-12,5 and 50-12,5
➢Casing O-ring (18)
➢Rotating bushes (1511) + (1512)
➢Static bushes (1521) + (1522)
➢O-rings (1811) + (1821) + (1812) + (1822)
For spare part kits see chapter 4.3 Recommended spare parts.
3.4. Assembly of the pump
The assembly procedure is done in the reverse order to the disassembly.
Nevertheless there are a few things that you have to remember in order to assemble the
pump correctly.
Fig. 3.4.1
Wet the O-rings with alcohol before assembly to make
the procedure easier.
3.4.1. Test run
We recommend you to conduct a test run of the pump before installing it in the system, so
no liquid gets wasted if the pump leaks or perhaps does not start accordingly to wrong
assembly of the pump.
After a few weeks of operation retighten the screws with appropriate torque.

4. SPARE PARTS
IOM manual CTM mag drive pumps 19
4. SPARE PARTS
4.1. Spare parts drawing
4.2. Spare parts list
Pos.
Description
Pump model
Material
20-7
25-8
25-10
32-12,5
40-12,5
50-12,5
11
Lantern
1
1
1
1
1
1
PP-GF (30%)
111
Motor mounting screw
4
4
4
4
4
4
A4-70
112
Motor mounting washer
-
-
-
4
4
4
A4-70
1180
Motor adaptive flange
-
-
-
-
-
1
Aluminium
1181
Flange mounting screw
-
-
-
-
-
4
A4-70
12
Isolation shell (rear casing)
1
1
1
1
1
1
PP-GF (30%), PVDF
13
Pump casing
1
1
1
1
1
1
PP-GF (30%), PVDF
141
Casing mounting screw
6
6
6
6
6
6
A4-70
142
Casing mounting washer
6
6
6
6
6
6
A4-70
143
Casing mounting nut
6
6
6
6
6
6
A4-70
1511
Front rotating bushing
1
1
1
1
1
1
PTFE –graphite, SiC
1512
Rear rotating bushing
1
1
1
1
1
1
PTFE –graphite, SiC
1521
Front static bushing
1
1
1
1
1
1
Al2O3(ceramic), SiC
1522
Rear static bushing
1
1
1
1
1
1
Al2O3(ceramic), SiC
16
External magnet assembly
1
1
1
1
1
1
Cast iron / NdFeB
161
Lock screw
2
2
2
-
-
-
St 45H
1611
Lock screw
-
-
-
1
1
1
St 45H
1612
Lock screw
-
-
-
2
2
2
St 45H
17
Spacer sleeve
-
-
-
-
-
1
Aluminium
18
Casing O-ring
1
1
1
1
1
1
EPDM, FKM
1811
O-ring
-
1
1
1
1
1
EPDM, FKM
1812
O-ring
1
1
1
1
1
1
EPDM, FKM
1821
O-ring
1
1
1
1
1
1
EPDM, FKM
1822
O-ring
1
1
1
1
1
1
EPDM, FKM
90
Impeller
1
1
1
1
1
1
PP / NdFeB, PVDF / NdFeB
OPTIONS
187
O-ring
2*
2*
2*
1
1
1
EPDM, FKM
188
O-ring
-
-
-
1
1
1
EPDM, FKM
791
Flange connection on inlet
2*
2*
2*
1
1
1
PP, PVDF
792
Flange connection on outlet
-
-
-
1
1
1
PP, PVDF
793
Hose connection on inlet
2*
2*
2*
1
1
1
PP, PVDF
794
Hose connection on outlet
-
-
-
1
1
1
PP, PVDF
* CTM20/25 has the same size of inlet/outlet