Weh TW18 User manual

WEH®- We Engineer Hightech
Type TW18
Operating instructions ⋅Betriebsanleitung Date: 06/23
WEH®Connector for pressure and function testing on components
with male threads
WEH® Adapter zur Druck- und Funktionsprüfung an Bauteilen mit
Außengewinde

Die deutsche Version ist das Original.
Hersteller: WEH GmbH Verbindungstechnik - im Nachfolgenden „WEH“ genannt.
The German version is the original.
Manufacturer: WEH GmbH Verbindungstechnik – hereinafter referred to as “WEH”.
LANGUAGES
TYPE TW18 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
WEH®Connector for pressure and function testing on components with male
threads
TYP TW18 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 36
WEH®Adapter zur Druck- und Funktionsprüfung an Bauteilen mit
Außengewinde
AE
DE

CONTENTS
1. INTRODUCTION 6
1.1 For your guidance 6
1.2 General information 7
1.3 Warranty and liability 7
1.4 General safety instructions 8
1.5 Definition of qualified personnel 9
2. INTENDED USE 10
3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION 11
4. TECHNICAL DATA 14
5. STORAGE 15
5.1 Safety instructions for proper storage 15
5.2 Storage 16
6. REQUIRED TOOLS 16
7. INSTALLATION 17
7.1 Safety instructions for installation 17
7.2 Installation of media line and pilot pressure line 18
7.3 Checking the connection for leak tightness 19
Type TW18
WEH®Connector for pressure and function testing on components
with male threads
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Operating instructions
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The German version is the original.
Manufacturer: WEH GmbH Verbindungstechnik - hereafter referred to as 'WEH'.
8. OPERATION 20
8.1 Safety instructions for operation 20
8.2 Connection 21
8.3 Disconnection 24
9. INSPECTION | MAINTENANCE 25
9.1 Safety instructions for inspection and maintenance 25
9.2 Maintenance intervals 26
9.3 Overview of minimum intervals for inspection and maintenance 26
9.4 Maintenance 27
10. LUBRICATION 32
10.1 Safety instructions for lubrication 32
10.2 Lubrication 32
11. TROUBLESHOOTING 33
12. DISPOSAL 35
13. ACCESSORIES | SPARE PARTS 35
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1. INTRODUCTION
Dear Customer,
Thank you for deciding to use our products.
The WEH®TW18 Connector has been developed for pressure and function testing of
components with male threads.
Observe and follow all instructions and warnings in these operating instructions�
Non-observance may result in personal injury and/or property damage�
1�1 For your guidance
The markings and symbols contained in these operating instructions have the
following meanings:
- Items are indicated by a dash
ÎCalls for action are indicated by an arrow
Figures
The illustrations and/or images used in these operating instructions are particularly
provided for illustrative purposes only and may differ in some details from the actual
product. For binding information, please refer to your individual orders.
Abbreviations / Definitions
For explanation of abbreviations and definitions of terms see applicable Technical
Appendix of the corresponding catalog or www.weh.com
Definition of signal words
Caution: A section marked with 'Caution' warns you about hazards that could result in
a slight, usually reversible personal injury if you do not comply with this instruction.
Attention: Sections marked ‘Attention’ warn you of situations that could lead to
property damage and disruptions in operation if you do not comply with the instruction.
Note: Sections marked ‘Note’ indicate that malfunctions in operation may occur if you
do not comply with the instruction.
Please note: Sections marked with ‘Please note’ provide you with additional
information for smooth operation.
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1�2 General information
ÎFirst read these operating instructions to avoid misuse and resulting damage.
- In these operating instructions you will find all the necessary information and
instructions for the WEH®Product.
ÎThen check the contents of your delivery. Each delivery must contain:
- a delivery note
- an original WEH Test report (not applicable to spare parts)
- WEH operating instructions
ÎIf any documents are missing, please contact WEH or your responsible distributor.
1�3 Warranty and liability
- Our General Terms and Conditions apply.
ÎPlease read these operating instructions and safety instructions carefully and
follow the information contained therein.
- The information in these operating instructions reflects to the state of knowledge at
the time of printing. Failure to comply may void the warranty. Any side agreements
to these operating instructions require the written approval of the Head of the
Quality Department at WEH.
- Violation of these operating instructions result in the lapse of all warranty claims.
WEH will accept no liability for consequential damage, in particular damage due to
personal injury and/or other legal interests.
Caution: WEH®Products may only be repaired by WEH.
ÎContact WEH or the responsible distributor if the WEH®Product requires
maintenance. Special maintenance work that may be performed by the operator is
described in these operating instructions and is specially marked.
ÎOnly use original WEH®Spare parts. These are exactly suited to the WEH®Product
and subject to strict quality controls.
- You yourself are solely responsible for the proper performance of the replacement or
repair. WEH is not responsible for the performance or any damage and/or losses
arising from it. WEH assumes no guarantee, warranty, product liability or other
liability for any replacement or repair of the WEH®Product performed by you or a
third party. If you or a third party does not have the necessary skills and
qualification for proper performance, you must refrain from performing replace-
ment or repair. Otherwise, there is a particular risk of endangering yourself and third
parties.
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1�4 General safety instructions
ÎAlways comply with all applicable local, national and international requirements,
stipulations, decrees, laws, standards, provisions, directives, norms, regulations,
prohibitions and instructions as well as all applicable industrial, quality and
technical standards. In particular, make sure that you and all users comply with the
applicable requirements related to occupational health and safety as well as
product safety requirements and that all required permissions, certificates and
approvals have been obtained.
ÎThese operating instructions should be provided to anyone responsible for the
installation, operation and maintenance of this WEH®Product.
Caution: Incorrect application poses a risk to the user's health and can cause
property damages. The consequences of incorrect application could include the
following:
- the connector or parts of the connector become loose under pressure
- media that may be under pressure, hot or toxic, can escape
- connection hoses vibrate dangerously
- The WEH®Product and these operating instructions are intended for use by qual-
ified personnel (see Chapter 1.5). Make these operating instructions available in
particular to the qualified personnel responsible for the individual phases of the life
cycle (especially for storage, installation, operation, inspection and maintenance,
troubleshooting and disposal) of the WEH®Product. The qualified personnel must
have read and understood these operating instructions.
ÎContact WEH before using the WEH®Product if the instructions in these operating
instructions are unclear in any way.
ÎTake appropriate safety measures if operating conditions exist that could endanger
the user.
ÎIn case of any damage that may affect the proper functioning of the WEH®Product,
do not use the WEH®Product until the situation has been clarified. Disassembly of
the WEH®Product may only be performed by WEH.
ÎComply with the assembly data indicated in these operating instructions.
Tightening with higher torques/assembly turns can result in damage or even
fractures when the system is pressurized.
ÎDo not use any auxiliary materials or cleaning agents other than those indicated
in these operating instructions. Using other auxiliary materials or cleaning agents
may cause damage to the WEH®Product or to downstream components.
- WEH is not responsible for damage caused by external forces or other external
influences.
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- It is assumed that only transport and storage facilities suitable for the storage of
the WEH®Product are used.
ÎDo not apply any external forces to the WEH®Product. Therefore, do not lean on the
(connected) WEH®Product, do not hang on the WEH®Product and do not climb on
the WEH®Product under any circumstances. In addition, refrain from hammering on
the WEH®Product or similar. Such force effects can lead to damage to property and
personal injury. Also ensure that the WEH®Product is protected from being stepped
on or run over in any way.
- The WEH®Product can become very hot or very cold due to the possible fluids
flowing through it, depending on the application and operating situation. In this
regard, observe the national and international regulations on occupational health
and safety to prevent injuries.
1�5 Definition of qualified personnel
- Qualified personnel, as defined by these instructions, are persons who, based on
their professional training, their knowledge (including the relevant standards and
regulations), experience and manual skills, can independently assess and properly
perform assigned work tasks (in conjunction with WEH®Products) and can thus
independently recognize and prevent potential dangers at an early stage.
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2. INTENDED USE
- The WEH®TW18 Connector has been developed for pressure and function testing of
components with male threads. The connector comes in many different sizes and
forms.
- The WEH®Connector is not suitable for emptying containers under pressure.
ÎAlways ensure that the WEH®Product is used only within the range of its intended
use. Please note in particular the technical data of the WEH®Product in Chapter 4 as
well as the marking on the WEH®Product itself.
- If you have ordered a customization from us, the WEH®Connector has been special-
ly adapted to the requirements and applications you have based your order on. The
underlying requirements and applications shall only be deemed to be confirmed in
so far as they have been expressly agreed to in writing by WEH. The connector must
not be used for applications and requirements other than those confirmed in writing
by WEH.
- This WEH®Product is generally classified as pressure accessory in accordance
with Article 2 (5) of the Pressure Equipment Directive 2014/68/EU and is con-
sidered to be similar to piping. This WEH®Product may not be used as safety
accessory. Furthermore, it is pointed out, that this WEH®Product is designed
and placed on the market in accordance with the requirements of Article 4 (3) of
the Pressure Equipment Directive 2014/68/EU. The assessment with regard to a
different classification can, however, be made on request.
Caution: Any use beyond the scope of application is considered as unintended use
and may result in personal injury and/or property damage.
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3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION
WEH®TW18H Connector
Pos� Description
1 Base unit
2 Hand lever
3 Actuator peg
7 Front seal (inside)
Definition of ports
B1 Media inlet
1
7
B1
2
3
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WEH®TW18V Connector
Pos� Description
1 Base unit
4 Valve button
5 Grub screw
7 Front seal (inside)
Definition of ports
B1 Media inlet
P1 Pilot pressure port
1
7
B1
4
P1
5
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WEH®TW18P Connector
Pos� Description
1 Base unit
6 Pneumatic actuation
7 Front seal (inside)
Definition of ports
B1 Media inlet
P2 Pilot pressure port
1
7
B1
6
P2
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4. TECHNICAL DATA
Please note: Depending on the application, the technical data of your WEH®Product
may differ from these operating instructions. Please therefore observe the marking on
the WEH®Product itself.
Characteristics Basic version
Max. allowable operating
pressure PS Vacuum up to 350 bar *
Pilot pressure 6 – 12bar compressed air
Pilot pressure port P1 G1/8“ female thread
Pilot pressure port P2 G1/4“ female thread
Temperature range +5°C to +80°C
Leak rate 1 x 10-3 mbar x l/s
Part materials Wear-resistant stainless steel, corrosion-resistant surfaces,
anodized aluminium
Sealing materials Front seal in NBR
Actuation
H = Manual actuation via hand lever
V = Pneumatic actuation via the valve button
P = Pneumatic actuation for external manual, semi-automatic or
fully automatic control systems
*Please note the marked max. permitted operating pressure.
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5. STORAGE
5�1 Safety instructions for proper storage
ÎMake sure that you always comply with these following safety instructions and
storage time.
Attention: Improper storage of the WEH®Product can significantly reduce the
maximum service life.
ÎProtect the WEH®Product against damage, contamination, inappropriate storage
and excessive temperature fluctuations.
ÎStore the WEH®Product, the accessories and spare parts in the original packaging
until they are used for the first time and during periods when they are not being
used.
ÎStore the WEH® Product within a temperature range of -40 °C up to +40 °C.Storage
temperatures outside this range may affect the service life of the WEH®Product.
ÎDo not store the WEH®Product in the vicinity of heat sources. Avoid humidity and
condensation. The ideal relative air humidity for storage is approx. 65%.
ÎDo not store the WEH®Product together in the same space with solvents,
chemicals, acids, fuels or disinfectants.
ÎProtect the WEH®Product against light, in particular direct sunlight, oxygen, ozone,
heat, UV radiation, and other negative environmental influences. The service life of
parts made of elastomer or plastic may be substantially reduced by such
environmental factors.
ÎDo not stack WEH®Products. For storage and retrieval, follow the first-in-first-out
(FIFO) principle.
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5�2 Storage
ÎFollow the safety instructions in Chapter 5.1 and observe the following storage
times. The appropriate storage period applies from the date of delivery (i.e. the date
of invoicing or goods issue date as recorded by WEH or its distributor). If the
WEH®Product is installed in a complete system, the storage time depends on the
component with the shortest storage time.
Up to 3 years
ÎBefore use, check the surfaces of the external seals for cracks.
Attention: Any elastomer seals with fine cracks on the surface must
be replaced.
Note: If you should have any doubts about the aging state of the
stored WEH® Product, please contact WEH.
Attention: Before commissioning, check the WEH® Product for leak
tightness. On this topic, see Chapter 7. Installation on page 17.
> 3 years - Before use, all elastomer seals must be replaced.
ÎFor this, send the WEH®Product to WEH for maintenance.
6. REQUIRED TOOLS
Part no� Description Installation
Mainte-
nance &
Lubrication
-- Suitable calibrated torque wrench
(suitable for the corresponding torque) X
-- Suitable open-ended wrench insert
(suitable for the relevant wrench sizes and torque wrench) X
-- Vice with aluminium jaws X
E99-44923 WEH®Lubricant X
E34-137980 WEH®Assembly tool X
W136538 WEH®O-ring picker set*X
*The WEH® O-ring picker is manufactured from plastic and has to be considered as a
consumable product.
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7. INSTALLATION
7�1 Safety instructions for installation
ÎCheck the information provided in these operating instructions and the label on the
WEH® Product. The information must conform to your application.
ÎOnly connect the WEH®Product to faultless connections.
ÎCheck the WEH®Product for transport damages, contamination and other damage. If
you should detect anything wrong with the WEH®Product, it may no longer be used.
Replace the WEH®Product or send it to WEH for maintenance.
ÎRemove transport securing devices (such as protection caps) before installing the
WEH®Product. Transport securing devices serve the purpose of protecting the
product and connection ports during transport and storage. The transport securing
devices are not, for example, designed to withstand pressure or to be used as plugs.
ÎEnsure that the system is depressurized. Installation must only be effected in
depressurized condition.
ÎAvoid using excessively short media lines and narrow bending radii. Lateral forces
may cause leakages or damage to components and make it more difficult to attach
the WEH®Connector properly.
ÎUse arrestor cables, partitions, etc. for additional safety where being used for
hazardous applications or under hazardous conditions.
ÎUSIT rings should be used to seal the ports.
ÎBefore installation, check if the counterparts are designed to withstand the assembly
data (see Chapter 7.2 Installation of media line and pilot pressure line) that WEH
determined for this WEH®Product.
Note: The indicated assembly data (tightening torques, assembly turns etc.) are values
that apply only to the components delivered by WEH.
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7�2 Installation of media line and pilot pressure line
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 11.
ÎUnscrew the protection caps from the connection ports.
ÎClamp the WEH®Connector in a vice with aluminium
clamping jaws to mount the media line and pilot pressure
line.
Note: The WEH®Connector must not be damaged during
clamping.
ÎScrew the ‘B1’ media inlet pressure-tight to the port for
the media line (Figure 1).
Tightening torque for the thread in the lower part see
table Page 19.
Note: For NPT thread, first wrap Teflon tape round the
tapered screw fitting (1.5layers). Screw the fitting
finger-tight into the port and install it in accordance with
the information in the table on page 17.
ÎScrew the pilot pressure port ‘P1’ (Figure 2) or ‘P2’
(Figure 3) pressure-tight to the connection port of the
pilot pressure line.
Tightening torque for the thread in the lower part see
table Page 19.
Note: For port “P1”, observe the table
“Screw-in depths for the pilot pressure port P1 on the
valve actuation”.
Figure 1
B1
Figure 2
P1
Figure 3
P2
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Ports Torque
G thread
Assembly turns
NPT thread*
1/8" female thread 10 Nm ± 2 Nm 2.0 - 3.0
1/4" female thread 30 Nm ± 2 Nm 2.0 - 3.0
1/2" female thread 50 Nm ± 2 Nm 2.0 - 3.0
* One turn corresponds to 360°
ÎPlease note the connection size marked on your product.
- Other connection sizes are available on request.
Screw-in depths for the pilot pressure port P1 on the valve actuation
Please note: Consider Figure 4 for the max. screw-in depth.
Body size max� screw-in depth
Any body size max. 11 mm
7�3 Checking the connection for leak tightness
ÎConnect the connector to a closed test piece.
ÎSlowly apply the operating pressure to the connector and media line.
Caution: The test piece must be closed.
ÎCheck the connector, the connection to the media line and pilot pressure line and
the connection to the test piece for leak tightness.
Attention: Do not use a leak detection spray that contains ammonia, since this could
cause corrosion of the connector.
1P.xam
screw-in depth
Figure 4
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8. OPERATION
8�1 Safety instructions for operation
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 11.
ÎApply pressure to the WEH®Connector only once it has been connected to a test
piece.
ÎDo not use excessive force when actuating.
ÎFollow the steps in exactly the right order when connecting and disconnecting the
WEH®Connector.
ÎAttach and detach the WEH®Connector only when it is not under pressure.
ÎConnect the WEH®Connector only to test pieces in full working order.
ÎAlign the WEH®Connector correctly with the test piece to prevent damage to the
front seal caused by any sharp edges that the test piece may have.
ÎOnce the connection has been made, always test the connection by tugging a little
on the WEH®Connector to make sure that is fully engaged and that the clamping
jaws are gripping correctly before introducing the pressurized test medium.
ÎThe clamping jaws of the WEH®Connector are designed to grip the test piece. Keep
fingers and other objects away from the clamping jaws when actuating the
connector.
Caution: Possible consequences of non-compliance are:
– Risk of fingers being crushed when connecting
– Risk to human safety and risk of damage to property by parts detaching at high
pressure
– Risk to human health by media being released at high pressure
– Risk to human safety by hoses not being secured
ÎThe WEH®Connector is not fitted with an integrated shut-off valve and thus will
not prevent loss of test medium when disconnecting. Therefore it is important to
disconnect the connector only under absolutely safe conditions.
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