TapFlo DT Series Operation instructions

DT series
Active Pulsation Dampener
Original Instruction
edition 2020 rev 1
Read this instruction manual carefully,
before you install and operate the dampener.
Dampener models:
DT/ DTX 9/20/25/30
DT/ DTX 50/70/80
DT/ DTX 100/120/125
DT/ DTX 200/220/225
DT/ DTX 400/420/425
DT/ DTX 800/820/825

CONTENTS
IOM manual active pulsation dampeners 2
EC DECLARATION OF CONFORMITY 01/EC/DT/2016............................................................................. 4
EU DECLARATION OF CONFORMITY 01/ATEX/DT/2016........................................................................ 5
0. GENERAL......................................................................................................................................... 6
0.1. Introduction................................................................................................................................ 6
0.2. Warning symbols ....................................................................................................................... 6
0.3. Qualification and training of personnel................................................................................... 6
1. INSTALLATION ............................................................................................................................... 7
1.1. Operation principle.................................................................................................................... 7
1.2. Receiving inspection.................................................................................................................. 8
1.3. Storage........................................................................................................................................ 8
1.4. Health and safety ....................................................................................................................... 8
1.4.1. Protection ........................................................................................................................... 8
1.4.2. Explosion hazardous environments –ATEX..................................................................... 9
1.4.3. Air pressure......................................................................................................................... 9
1.4.4. Noise level .......................................................................................................................... 9
1.4.5. Temperature hazards....................................................................................................... 10
1.5. Air connection .......................................................................................................................... 10
1.6. Example of installation............................................................................................................ 11
1.6.1. Standard pump................................................................................................................. 11
1.6.2. TF pump ............................................................................................................................ 11
2. OPERATION .................................................................................................................................. 12
2.1. Before operating the dampener ............................................................................................. 12
2.2. Disposal after expiration of the expected lifetime ............................................................... 12
2.3. Actions in emergency .............................................................................................................. 12
2.4. Residual risks ............................................................................................................................ 12
3. MAINTENANCE ............................................................................................................................ 13
3.1. When the dampener is new or reassembled.......................................................................... 13
3.2. Routine inspection ................................................................................................................... 13
3.3. Complete inspection ................................................................................................................ 13
3.4. Location of faults ..................................................................................................................... 14
3.5. Disassembly of the dampener................................................................................................. 15
3.5.1. Before the disassembly procedure ................................................................................. 15
3.5.2. Disassembly procedure.................................................................................................... 15
3.6. Assembly of the dampener ..................................................................................................... 17
3.6.1. Test run ............................................................................................................................. 19

CONTENTS
IOM manual active pulsation dampeners 3
4. OPTIONS ....................................................................................................................................... 20
4.1. DTB series ............................................................................................................................. 20
4.2. DTF series.............................................................................................................................. 20
5. SPARE PARTS................................................................................................................................ 21
5.1. Spare parts drawing - PE & PTFE, Aluminium ....................................................................... 21
5.2. Spare parts list –PE & PTFE, Aluminium................................................................................ 21
5.3. Spare parts drawing –Stainless steel industrial and sanitary ............................................. 22
5.4. Spare parts list –steel and sanitary ........................................................................................ 22
5.5. Stocking recommendation...................................................................................................... 23
5.6. How to order parts................................................................................................................... 23
5.7. Dampener code ........................................................................................................................ 23
6. DATA ............................................................................................................................................. 24
6.1. Overall dimensions .................................................................................................................. 24
6.1.1. Dimensions table –Plastic (PE&PTFE)............................................................................ 25
6.1.2. Dimensions table –Metal series (aluminium) ............................................................... 26
6.1.3. Dimensions table –Metal series (Stainless Steel).......................................................... 28
6.1.4. Dimensions table –Sanitary series ................................................................................. 29
6.2. Tightening torques .................................................................................................................. 30
6.3. Technical data .......................................................................................................................... 30
7. WARRANTY .................................................................................................................................. 32
7.1. Warranty form.......................................................................................................................... 32
7.2. Returning parts ........................................................................................................................ 33
7.3. Warranty ................................................................................................................................... 33

EC DECLARATION OF CONFORMITY 01/EC/DT/2016
Series:
DT(…)
Serial numbers:
2018 - … (from 1801-…)
Manufactured by:
Tapflo AB
Filaregatan 4
442 34 Kungälv, Sweden
This declaration of conformity is issued under the sole responsibility of the manufacturer.
Object of declaration: ACTIVE PULSATION DAMPENERS
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;
Mr Michał Śmigiel is authorized to compile the technical file.
Tapflo Sp. z o.o.
ul. Czatkowska 4b
83-110 Tczew
Signed for and on behalf of
Tapflo AB
Håkan Ekstrand
Managing Director
Tapflo AB, 01.01.2018r

EU DECLARATION OF CONFORMITY 01/ATEX/DT/2016
Series:
DTX(…)
Serial numbers:
2018 - … (from 1801-…)
Dampener materials:
Conductive PE, Conductive PTFE, Conductive PP, Aluminium, Stainless steel AISI 316/316L
Manufactured by:
Tapflo AB
Filaregatan 4
442 34 Kungälv, Sweden
This declaration of conformity is issued under the sole responsibility of the manufacturer.
Object of declaration: CONDUCTIVE PULSATION DAMPENERS
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
•Directive 2014/34/EU of the European parliament and of the council of 26 February 2014 on
Equipment or Protective System intended for use in potentially explosive atmospheres
and is intended for operation in potentially explosive atmospheres according to:
Equipment group: IIG (Gas) / IID (Dust)
Category: 2
Apparatus group: IIB
Temperature class: T4
Signed for and on behalf of Tapflo AB
Håkan Ekstrand
Managing Director
Tapflo AB, 16.04.2016r

0. GENERAL
IOM manual active pulsation dampeners 6
0. GENERAL
0.1. Introduction
The active pulsation dampener is the most efficient way to remove pressure variations on the
discharge of the pump. The Tapflo pulsation dampener works actively with compressed air and
a diaphragm, automatically setting the correct pressure to minimize the pulsations. The
pulsation dampener is available for all Tapflo pump sizes and material versions.
With proper attention to maintenance, Tapflo active pulsation dampeners will give efficient and
trouble free operation. This instruction manual will familiarize operators with detailed
information about installing, operating and maintaining the dampener.
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 dampener or its
subassemblies.
0.3. Qualification and training of personnel
The personnel in charge of installation, operation and maintenance of the dampener 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.
In case any instructions in this manual are unclear or any information is lacking, please contact
Tapflo before handling the dampener.

1. INSTALLATION
IOM manual active pulsation dampeners 7
1. INSTALLATION
1.1. Operation principle
The pulsation dampener’s main function is to remove pressure variations on the discharge of
the pump. The dampener works actively with compressed air and a diaphragm, automatically
setting the correct pressure to minimise the pulsations.
The air pressure supplied to the dampener is the same as the one supplied to the pump. The
medium flowing through the dampener affects the diaphragm, which by means of the
compressed air on the air side compensates the fluctuations of pressure in the discharge line.
The air concentrated in the dampeners block works as a spring for the medium flowing through
the dampener.
When operating, dampener does not consume compressed air. It is only consumed during
setting phase, when pump duty point is being changed.

1. INSTALLATION
IOM manual active pulsation dampeners 8
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.
-Before handling the dampener check the weight of the dampener (see 6.3. “Technical
data”). Refer to Your local standards on how to handle the dampener. If the weight is
excessive to transport by hand it must be lifted using slings and a suitable lifting device
e.g. a crane or forklift.
-Always use at least two slings and make sure they are secured in such a way to prevent
the dampener from slipping and that the dampener is hanging straight. Never lift the
dampener with only one sling. Incorrect lifting can cause serious injury and/or damage to
the dampener.
-Never lift the dampener under pressure.
-Be careful that nobody passes under the dampener when lifted.
-Never try to lift the dampener by the connections (e.g. flange pipes) or hoses attached to
the dampener.
-As an option, dampener can be equipped with lifting eyebolts connected with the
dampener pin screws.
1.3. Storage
If the equipment is to be stored prior to installation, place it in a clean location. The dampener
should be stored in an ambient temperature of 15°C (59°F) to 25°C (77°F) and relative humidity
below 65%. It should not be exposed to any heat source e.g. radiator, sun as this could result in
a negative way on the tightness of the dampener. Do not remove protective covers from the
inlet/outlet and air connections which have been fastened to keep dampener internals free of
debris. Clean the dampener thoroughly before installation.
1.4. Health and safety
The pulsation dampener must be installed according to local and national safety rules.
The dampeners are constructed for particular applications. Do not use the dampeners on
applications different from that for which it was sold without consulting us to ascertain
its suitability.
The dampeners are tested with water. If the pumped product can come into reaction with
water, please make sure the device is dry before putting it into operation.
1.4.1. 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 dampeners.

1. INSTALLATION
IOM manual active pulsation dampeners 9
1.4.2. Explosion hazardous environments –ATEX
The standard DT series dampeners are not allowed to operate in environments where there is
danger of explosion. Static electricity may occur in the dampener under operation, which may
cause explosion and injury. Special conductive DTX dampeners are available for such
applications. Follow below instructions and local/national rules for safe use.
ATEX (directive 2014/34/EU) classification of Tapflo DTX dampeners.
ATEX II 2 GD IIB cT4
Equipment group: II –all other explosive areas than mines;
Category group: 2–high level of protection (can be used in zone 1);
Atmosphere: G–gas;
D –dust;
Explosion group: IIB –such as ethylene;
Type of protection: c–constructional safety;
Temperature class: T4 –in the event of a malfunction, the maximum temperature of a
surface that may be exposed to gas T4 = 135 °C.
Earth connection of the dampener and other equipment
Connect a suitable earth wire to the stainless steel earth connection that is placed on the top
or on the side of the dampener block , depending on dampener size and execution. Connect
the other end of the earth wire to earth and also make sure that other equipment like
hoses/pipes/containers etc. are properly earthed/connected.
1.4.3. Air pressure
The maximum air pressure for standard Tapflo dampeners is 8 bar. Higher air pressure than 8
bar can damage the dampener and may cause injury to personnel in vicinity of the dampener.
For higher pressure rate, up to 16 bar (depending on the size) see optional dampener execution
in chapter 4.2. DTF series.
Please make sure that supply air to the dampener must have the same flow and pressure as the
pump that dampener is installed with.
1.4.4. Noise level
At tests, the noise level from a Tapflo dampener has not exceeded 70 dB(A). Under some
circumstances, for example if the dampener is operating under high air pressure at low
discharge head, the noise can be inconvenient or hazardous for personnel staying for long
periods in the vicinity of the dampener. This hazard can be prevented by:
➢using suitable ear protection;
➢lowering the air pressure and/or raising the discharge head.

1. INSTALLATION
IOM manual active pulsation dampeners 10
1.4.5. Temperature hazards
➢Raised temperature can cause damage on the dampener and/or piping and may also be
hazardous for personnel in the vicinity of the dampener/piping. Avoid quick temperature
changes and do not exceed the maximum temperature specified when the dampener was
ordered. See also general max temperatures based on water in chapter 6.3. “Technical
data”
➢When the dampener is exposed to ambient temperature variations or if there is big
difference between the temperature of the product and the surrounding, the tightening
torques of the housing nuts should be checked periodically as part of preventive
maintenance.
➢If a hot product is pumped, the dampener should not stand still when filled for a longer
period of time. This could cause leakage.
➢Below 0°C (32°F) plastic materials become more fragile what can cause increased wear of
parts made of these materials. This is a hazard that has to be accepted when pumping cold
products. Also in such case, when a dampener is not operation it should be drained of all
liquid.
➢The fluid remaining in the connected piping, as well as in the dampener itself, may expand
because of freezing or heat, which may cause damage to the dampener or/and piping,
and lead to leakage of the fluid.
1.5. Air connection
Screw the air hose into the air intake on the centre block of the dampener with for example a
quick release coupling. For best efficiency, use the same hose diameter as the internal diameter
of the connection on the air intake.