Weh TVR2 User manual

WEH®- We Engineer Hightech
Type TVR2
Operating instructions ⋅Betriebsanleitung Date: 09/22
WEH®Check valve made of stainless steel
WEH®Rückschlagventil aus Edelstahl

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 TVR2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
WEH®Check valve made of stainless steel
TYP TVR2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 18
WEH®Rückschlagventil aus Edelstahl
AE
DE

The German version is the original.
Manufacturer: WEH GmbH Verbindungstechnik - 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 9
2. INTENDED USE 10
3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION 11
4. TECHNICAL DATA 12
5. STORAGE 13
5.1 Safety instructions for proper storage 13
5.2 Storage 14
6. REQUIRED TOOLS 14
7. INSTALLATION 15
7.1 Safety instructions for installation 15
7.2 Installing the check valve 16
8. COMMISSIONING 17
9. MAINTENANCE 17
10. DISPOSAL 17
Type TVR2
WEH®Check valve made of stainless steel
MD-10385-L51-R2.1.0-03 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 reliably preventing
return flow in a gaseous or liquid media flow.
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 provid-
ed 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 informa-
tion 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
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 qualifi-
cation for proper performance, 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 tech-
nical standards. In particular, make sure that you and all users comply with the ap-
plicable 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.
- The WEH®Product and these operating instructions are intended for use by
qualified 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 mainte-
nance, 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. Tighten-
ing 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.
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Operating instructions
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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 make sure 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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Operating instructions AE

2. INTENDED USE
- The WEH®TVR2 Check valve has been exclusively designed for reliably preventing
return flow in a gaseous or liquid media flow.
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
approvals are required.
- The WEH®Product is outfitted with an FKM 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 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.
MD-10385-L51-R2.1.0-03
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Operating instructions
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3. PRODUCT OVERVIEW / PRODUCT DESCRIPTION
TVR2 with
double ferrule fitting on both sides
TVR2 with
female thread on both sides
TVR2 with
male thread on both sides
TVR2 with
male thread and female thread
TVR2 with
double ferrule fitting
and male thread
Definition of ports
B1 Media inlet
B2 Media outlet
B1
B2
B1
B2
B1
B2
B1
B2
B2
B1
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Operating instructions AE

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 Variants Media inlet "B1" / Media outlet "B2"
Double ferrule fitting: Tube Ø 6 - 16 mm Female thread: G1/8“ - G1“ Male thread: G1/8“ - G1“
Double ferrule fitting: up to max. Ø 50 mm on request Female thread: up to max. G3“ on request Male thread: up to max. G3“ on request
Nominal bore (DN) 3 to 20 mm, depending on the design Other nominal bores on request Max. allowable operating pressure PS
Double ferrule fitting: 150 bar Female thread: 250 bar Male thread: 250 bar
Other pressures on request
Cracking pressure PC* Depending on the version Other cracking pressures on request Temperature range -20°C to max. +200°C
Depending on the version and application -45°C to max. +300°C peak temperature. Other temperature ranges on request
Leak rate** 1 x 10-4 mbar x l/s On request Part materials
Stainless steel For nominal bores up to and including 8 mm, inner parts partly made of brass.
Other materials on request
Spring material Stainless steel Other materials on request Sealing material FKM Other sealing materials on request Lubricant E99-4 On request Valve seat Up to DN 6 mm ball sealing,
lager dimensions cone sealing On request
*Please note that the indicated cracking pressure applies for a horizontal installation of the check vale. If you plan a
different direction of installation, these values may differ. ** This value refers to leakage at the separation point or sealing point between the two parts of the housing
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Operating instructions
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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 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
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 8. Commissioning on page 17.
6. REQUIRED TOOLS
Part no� Description Installation Commissioning
-- Suitable open-ended wrench
(suitable for the relevant wrench sizes) X
-- Calibrated torque wrench
(suitable for the corresponding torque) X
-- Foaming leak detection agent X
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Operating instructions
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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.
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.
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.
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Operating instructions AE

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 11.
ÎUnscrew the protection caps from the connection ports.
ÎUse an open-end wrench to hold the wrench size 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.
Note: For tube fittings, please note the WEH®Operating instructions "Products with
double ferrule fitting".
Ports Torque
G1/8“ female thread 10Nm + 10%
G1/4“ female thread 30 Nm + 10%
G3/8“ female thread 40Nm + 10%
G1/2“ female thread 50Nm + 10%
G3/4" female thread 60Nm + 10%
G1" female thread 60Nm + 10%
ÎPlease note the connection size marked on your product.
- Other connection sizes are available on request.
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Operating instructions
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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
bubbles.
Caution: Observe the technical data in Chapter 4 and all appropriate technical
standards and applicable legal requirements.
Attention: Do not use a leak detection spray that contains ammonia, since this could
cause corrosion to the product.
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
applications.
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.
MD-10385-L51-R2.1.0-03 Page 17
Operating instructions AE

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 23
2. BESTIMMUNGSGEMÄSSE VERWENDUNG 24
3. PRODUKTÜBERSICHT / PRODUKTBESCHREIBUNG 25
4. TECHNISCHE DATEN 26
5. LAGERN 27
5.1 Sicherheitshinweise zum sachgerechten Lagern 27
5.2 Lagern 28
6. BENÖTIGTE HILFSMITTEL 28
7. INSTALLIEREN 29
7.1 Sicherheitshinweise zum Installieren 29
7.2 Rückschlagventil installieren 30
8. INBETRIEBNEHMEN 31
9. WARTEN 31
10. ENTSORGEN 31
Typ TVR2
WEH®Rückschlagventil aus Edelstahl
MD-10385-L51-R2.1.0-03 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 oder flüssigen Medienstrom 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 / Begriffsdefinitionen
Erläuterung der Abkürzungen sowie Begriffsdefinitionen finden Sie im mitgeltenden
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
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