Weh TVR2 User manual

WEH®- We Engineer Hightech
Type TVR2
Operating instructions ⋅Betriebsanleitung Date: 11/21
WEH®Check valve for reliable return flow prevention in a gaseous
media stream and for installation in gas mixing plants
WEH®Rückschlagventil für die zuverlässige Rückflussverhinderung
in einem gasförmigen Medienstrom und zum Einbau in Gasmisch-
anlagen

Die deutsche Version ist das Original.
Hersteller: WEH GmbH Verbindungstechnik - im Nachfolgenden „WEH“ genannt.
The German version is the original.
Manufacturer: WEH GmbH Precision Connectors – hereinafter referred to as “WEH”.
LANGUAGES
TYPE TVR2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
WEH®Check valve for reliable return flow prevention in a gaseous media
stream and for installation in gas mixing plants
TYP TVR2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 18
WEH®Rückschlagventil für die zuverlässige Rückflussverhinderung in einem
gasförmigen Medienstrom und zum Einbau in Gasmischanlagen
AE
DE

The German version is the original.
Manufacturer: WEH GmbH Precision Connectors - hereafter referred to as 'WEH'.
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 8
2. INTENDED USE 9
3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION 10
4. TECHNICAL DATA 11
5. STORAGE 12
5.1 Safety instructions for proper storage 12
5.2 Storage 13
6. REQUIRED TOOLS 13
7. INSTALLATION 14
7.1 Safety instructions for installation 14
7.2 Installing the check valve 15
8. COMMISSIONING 15
9. MAINTENANCE 16
10. DISPOSAL 16
11. ACCESSORIES 16
Type TVR2
WEH®Check valve for reliable return flow prevention in a gaseous
media stream and for installation in gas mixing plants
MD-10338-L51-R1.0.0-03 Page 5
Operating instructions AE

1. INTRODUCTION
Dear Customer!
Thank you for deciding to use our products.
The WEH®TVR2 Check valve has been exclusively designed for reliable return flow
prevention in a gaseous media stream and for installation in gas mixing plants.
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
For explanation of abbreviations and definitions of terms see 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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Operating instructions
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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 instruc-
tions 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.
ÎRead 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 mainte-
nance. 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 intended appli-
cation and subject to strict quality controls.
- You are responsible for the correct operation 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 replace-
ment 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 perfor-
mance, you must refrain from performing replacement or repair. Otherwise, there is a
particular risk of endangering yourself and third parties.
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Operating instructions AE

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 instal-
lation, operation and maintenance of this WEH®Product.
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.
- It is assumed that only transport and storage facilities suitable for the storage of the
WEH®Product are used.
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.
MD-10338-L51-R1.0.0-03
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Operating instructions
AE

2. INTENDED USE
- The WEH®TVR2 Check valve has been exclusively designed for reliable return flow
prevention in a gaseous media stream and for installation in gas mixing plants.
ÎNever use the WEH®Product as a safety valve.
- The WEH®Check valves were only developed for reliable return flow prevention.
They are not designed to be used as filling or safety valves. The separation or shut
off between different media or a medium and vacuum also does not represent a
fundamental intended use. If you have such an application or a similar application,
please contact us!
Note: The TVR valve has not been designed for use as a body that creates a complete
seal between two operating media, or one operating medium and the atmosphere or a
vacuum. The functionality of the inner seal depends on the pressure differential in the
seal direction along with many other operating conditions.
ÎOnly use the WEH®Product for industrial applications. The product was designed
and tested for that purpose. For automotive application, products with special ap-
provals are required.
- The WEH®Product is outfitted with an EPDM seal as a standard feature. Other sealing
materials are available on request. Before using the product, please check the media
compatibility of the seals with your application.
- Only install the WEH®Product into a line system if the same medium is applied on both
sides and the system is operated at nominal load. Operation of a system at partial load
can cause flow disruptions that take effect in the form of vibrations or noises.
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.
- 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 consid-
ered to be similar to piping. This WEH®Product may not be used as safety acces-
sory. 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 classi-
fication 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.
MD-10338-L51-R1.0.0-03 Page 9
Operating instructions AE

3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION
Basic version
TVR2 with
male thread on both sides
Definition of ports
B1 Media inlet
B2 Media outlet
B1
B2
MD-10338-L51-R1.0.0-03
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Operating instructions
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4. TECHNICAL DATA
Characteristics Basic version
Product series TVR2
Nominal bore (DN) 12 mm
Max. allowable operating pressure PS 420 bar
Temperature range +5°C to +95°C
Medium Inert gases
Part materials Housing of brass, inner parts of stainless steel
Spring material Stainless spring steel
Sealing materials Housing seal in EPDM
Valve seat Cone seal with PEEK
Direction of flow B14B2
Other designs on request.
MD-10338-L51-R1.0.0-03 Page 11
Operating instructions AE

5. STORAGE
5�1 Safety instructions for proper storage
ÎMake sure that you always comply with these following safety instructions and stor-
age time.
Attention: Improper storage of the WEH®Product can significantly reduce the maxi-
mum 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 environ-
mental factors.
ÎDo not stack WEH®Products. For storage and retrieval, follow the first-in-first-out
(FIFO) principle.
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Operating instructions
AE

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
ÎNote: 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 8. Commissioning on page 15.
6. REQUIRED TOOLS
Part no� Description Installation Commissioning
-- Suitable open-ended spanner
(suitable for the relevant spanner widths) X
-- Calibrated torque wrench
(suitable for the corresponding torque) X
-- Foaming leak detection agent X
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Operating instructions AE

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.
ÎInstall the WEH®Product carefully without exerting any force.
The product must not be exposed to any additional mechanical stress. Additional
mechanical stress, e.g. lateral forces caused by connected pipes, may lead to leak-
ages and may cause the product to burst.
ÎRelevant technical standards must be observed during installation.
ÎThe WEH®Product is mounted between two pipe or hose
ends of the media line. Installation of the product may be
carried out with the media line in any position, horizontal,
vertical, diagonal etc.
Attention: Observe the direction of the flow – the
flow direction is marked on the housing (Figure 1).
Note: Please note the information about the installation
position on the quotation. If the cracking pressure is
particularly low, an incorrect installation position may
negatively impact the product's functionality.
ÎBefore installation, check if the counterparts are designed to withstand the assembly
data (see Chapter 7.2 Installing the check valve) 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.
Figure 1
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Operating instructions
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7�2 Installing the check valve
Please note: Subsequent mentions of descriptions and position numbers refer to
Chapter 3. Product overview / product description on page 10.
ÎUnscrew the protection caps from the ports.
ÎUse an open-ended wrench to hold the wrench flat in place when installing the
WEH®Product.
ÎInstall the WEH®Product into your system in a pressure-tight manner at ports ‘B1’
and ‘B2’.
For the tightening torque, please refer to the table below.
Attention: Please note the flow direction marked on the product.
Ports Torque
UNF 1 3/8“-12 male thread 15 Nm + 10%
ÎPlease note the connection size marked on your product.
- Other connection sizes are available on request.
8. COMMISSIONING
- Check the WEH®Product and connections for leak tightness before commissioning
for the first time.
ÎApply the operating pressure slowly to the WEH®Product slowly.
ÎUse a foaming leak detection agent to check the WEH®Product and connections to
the product for leak tightness. The test points must be sealed tight without any bub-
bles.
Caution: Observe the technical data in Chapter 4 and all appropriate technical stan-
dards and applicable legal requirements.
Attention: Do not use a leak detection spray that contains ammonia, since this could
cause corrosion to the product.
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Operating instructions AE

9. MAINTENANCE
ÎBased on intended use, the WEH®Product does not require maintenance. Inner leak
tightness can deteriorate over time due to various influences owing to the applica-
tions.
10. DISPOSAL
ÎDispose of the WEH®Product appropriately when you no longer need it. Observe the
national and local disposal regulations valid at the time of disposal.
11. ACCESSORIES
Adaptor incl� union nut
Part No� Description B1 (female thread) B2
C1-164158 Adaptors UNF 1 3/8"-12 M24x1.5* male thread
for tube Ø 16
C1-166893 Adaptors UNF 1 3/8"-12 Tube Ø 16**
C1-164157 Adaptors UNF 1 3/8"-12 G3/8"
C1-100953*** Adaptors UNF 1 3/8"-12 Tube Ø 16x2
C1-164156*** Adaptors UNF 1 3/8"-12 Tube Ø 20x3
* 24° cone connection acc. to ISO 8434-1 (S16xM24)
** Double ferrule fitting
*** With welding socket
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Operating instructions
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Die deutsche Version ist das Original.
Hersteller: WEH GmbH Verbindungstechnik - im Nachfolgenden „WEH“ genannt.
INHALT
1. EINLEITUNG 20
1.1 Zu Ihrer Orientierung 20
1.2 Allgemeine Angaben 21
1.3 Gewährleistung und Haftung 21
1.4 Allgemeine Sicherheitshinweise 22
1.5 Definition von Fachpersonal 22
2. BESTIMMUNGSGEMÄSSE VERWENDUNG 23
3. PRODUKTÜBERSICHT / PRODUKTBESCHREIBUNG 24
4. TECHNISCHE DATEN 25
5. LAGERN 26
5.1 Sicherheitshinweise zum sachgerechten Lagern 26
5.2 Lagern 27
6. BENÖTIGTE HILFSMITTEL 27
7. INSTALLIEREN 28
7.1 Sicherheitshinweise zum Installieren 28
7.2 Rückschlagventil installieren 29
8. INBETRIEBNEHMEN 29
9. WARTEN 30
10. ENTSORGUNG 30
11. ZUBEHÖR 30
Typ TVR2
WEH®Rückschlagventil für die zuverlässige Rückflussverhinderung
in einem gasförmigen Medienstrom und zum Einbau in Gasmisch-
anlagen
MD-10338-L51-R1.0.0-03 Seite 19
Betriebsanleitung DE

1. EINLEITUNG
Sehr geehrter Kunde!
Wir freuen uns, dass Sie sich für den Einsatz unseres Produktes entschieden haben.
Das WEH®Rückschlagventil TVR2 wurde ausschließlich für die zuverlässige Rückfluss-
verhinderung in einem gasförmigen Medienstrom und zum Einbau in Gasmischanlagen
entwickelt.
Beachten und befolgen Sie sämtliche Hinweise und Warnungen in dieser Betriebs-
anleitung� Eine Nichteinhaltung kann zu Personen- und/oder Sachschäden führen�
1�1 Zu Ihrer Orientierung
Die in dieser Betriebsanleitung verwendeten Kennzeichen und Symbole haben folgende
Bedeutung:
- Aufzählungen sind durch einen Strich gekennzeichnet
ÎHandlungsaufforderungen sind durch einen Pfeil gekennzeichnet
Abbildungen
Die in dieser Betriebsanleitung verwendeten Abbildungen dienen nur zur Veranschaulichung
und können in einigen Einzelheiten vom tatsächlichen Produkt abweichen. Verbindliche
Angaben entnehmen Sie bitte den jeweiligen Einzelaufträgen.
Abkürzungen
Erläuterung der Abkürzungen sowie Begriffsdefinitionen finden Sie im Technischen
Anhang des entsprechenden Katalogs oder unter www.weh.com
Definition von Signalwörtern
Vorsicht: Eine mit „Vorsicht“ gekennzeichnete Passage warnt Sie vor Gefahren, die zu
einer leichten, in der Regel reversiblen Verletzung von Personen führen kann, falls Sie
diesen Hinweis nicht beachten.
Achtung: Eine mit „Achtung“ gekennzeichnete Passage warnt Sie vor Situationen, die zu
Sachschäden und Störungen im Betriebsablauf führen können, falls Sie diesen Hinweis
nicht beachten.
Hinweis: Eine mit „Hinweis“ gekennzeichnete Passage weist Sie auf darauf hin, dass es
zu Störungen im Betriebsablauf kommen kann, falls Sie diesen Hinweis nicht beachten.
Bitte beachten: Eine mit „Bitte beachten“ gekennzeichnete Passage gibt Ihnen zusätz-
liche Hinweise für einen reibungslosen Betriebsablauf.
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Betriebsanleitung
DE