Viega G2101 User manual

Model Year built:
G2101 from 01/1990
en_INT
Gas ball valve
Instructions for Use

Gas ball valve 2 from 12

Table of contents
1About these instructions for use 4
1.1 Target groups 4
1.2 Labelling of notes 4
1.3 About this translated version 5
2Product information 6
2.1 Standards and regulations 6
2.2 Intended use 7
2.2.1 Areas of use 7
2.2.2 Media 8
2.3 Product description 8
2.3.1 Overview 8
2.3.2 Threaded connection 9
2.3.3 Markings on components 9
2.3.4 Compatible components 9
2.3.5 Technical data 10
2.4 Information for use 10
2.4.1 Corrosion 10
3Handling 11
3.1 Assembly information 11
3.1.1 Mounting instructions 11
3.2 Assembly 11
3.2.1 Leakage test 11
3.3 Maintenance 12
3.4 Disposal 12
Table of contents
Gas ball valve 3 from 12

1 About these instructions for use
Trade mark rights exist for this document, further information can be
found at www.viega.com/legal-notices .
1.1 Target groups
The information in this instruction manual is directed at the following
groups of people:
ncontract installers registered in the installers' register of a utility com-
pany
nprofessional specialist companies for the construction, maintenance
and alteration of a natural or liquid gas system
Liquid gas systems may only be constructed, maintained or altered by
companies that have the necessary qualification and experience.
It is not permitted for individuals without the abovementioned training or
qualification to mount, install and, if required, service this product. This
restriction does not extend to possible operating instructions.
The installation of Viega products must take place in accordance with
the general rules of engineering and the Viega instructions for use.
1.2 Labelling of notes
Warning and advisory texts are set aside from the remainder of the text
and are labelled with the relevant pictographs.
DANGER!
This symbol warns against possible life-threatening injury.
WARNING!
This symbol warns against possible serious injury.
CAUTION!
This symbol warns against possible injury.
NOTICE!
This symbol warns against possible damage to property.
About these instructions for use
Gas ball valve 4 from 12

Notes give you additional helpful tips.
1.3 About this translated version
This instruction for use contains important information about the choice
of product or system, assembly and commissioning as well as intended
use and, if required, maintenance measures. The information about the
products, their properties and application technology are based on the
current standards in Europe (e. g. EN) and/or in Germany
(e. g. DIN/DVGW).
Some passages in the text may refer to technical codes in Europe/
Germany. These should serve as recommendations in the absence of
corresponding national regulations. The pertinent national laws, stand-
ards, regulations and guidelines, as well as other technical guidelines,
have priority over German/European guidelines in this manual: The
information is not binding for other countries and territories and should,
as mentioned, be considered as support.
About these instructions for use
Gas ball valve 5 from 12

2 Product information
2.1 Standards and regulations
Regulations Scope / Notice
DVGW-TRGI 2008 Gas installations
DVFG-TRF 2012 Liquid gas systems
DVGW Worksheet G 5614 Industrial, commercial and
process plants
DVGW Worksheet G 462 Industrial, commercial and
process plants
DVGW Worksheet G 459-1 Industrial, commercial and
process plants
DVGW Technical information No. 10Industrial, commercial and
process plants
DVGW Worksheet G 260 Gas quality
DIN EN 331 Gas fittings
DIN 3537-1 Leak tightness
DIN EN 10226-1 Threaded pair
DIN 30660 Permitted sealants
DIN EN 751-2 Permitted sealants
DIN EN 331 Operating temperature
The following standards and regulations apply:
Areas of use
Media
Overview
Threaded connection
Technical data
Corrosion
Product information
Gas ball valve 6 from 12

DIN 30672
DVGW-TRGI 2008, Point 5.2.7.1 Outer pipes
DVGW-TRGI 2008, Point 5.2.7.2 Inner pipes
DVFG-TRF 2012, Point 7.2.7.1 Outer pipes
DVFG-TRF 2012, Point 7.2.7.2 Inner pipes
DVGW-TRGI 2008 Exceptions, selection criteria, and
arrangement of the components
DVFG-TRF 2012 Exceptions, selection criteria, and
arrangement of the components
DVGW-TRGI 2008, Point 5.3.9 Application of active and passive
protection measures
DVGW-TRGI 2008, Point 5.6
DVFG-TRF 2012, Point 8 Testing and initial commissioning
of a liquid gas system
DVGW-TRGI 2008 Appendix 5c Operation and maintenance of
gas installations
2.2 Intended use
The use of the model for areas of use and media other than
those described must be approved by the Viega Service
Center.
2.2.1 Areas of use
Use is possible in the following areas among others:
nGas installations
nLiquid gas installations
nCompressed air systems
Mounting instructions
Leakage test
Maintenance
Product information
Gas ball valve 7 from 12

For planning, execution, modification and operation of gas installations,
observe the applicable regulations, see ÄChapter 2.1 „Standards and
regulations“ on page 6 .
Use is possible in the gas installations described in the following:
nGas installations
– low pressure range ≤100 hPa (100 mbar)
– medium pressure range from 100 hPa (100 mbar) up to 0.1 MPa (1 bar)
nLiquid gas installations
– with liquid gas tank in medium pressure range downstream of
the pressure regulating device, 1st level on the
liquid gas tank > 100 hPa (100 mbar) up to a permitted operating
pressure of 0.5 MPa (5 bar)
– with liquid gas tank in the low pressure range
≤100 hPa (100 mbar) behind the pressure regulating device,
2nd level
– with liquid gas pressurised container (liquid gas bottles) < 16 kg
behind the small bottle pressure regulating valve
– with liquid gas tank (liquid gas bottle) ≥16 kg
behind the large bottle pressure regulating device
Observe the applicable regulations, see ÄChapter 2.1 „Standards and
regulations“ on page 6 .
2.2.2 Media
The model is also suitable for the following media, amongst others:
nGases, see ÄChapter 2.1 „Standards and regulations“ on page 6
nLiquid gases, only in the gaseous state for domestic and commercial
applications, see ÄChapter 2.1 „Standards and regulations“
on page 6 .
nCompressed air
2.3 Product description
2.3.1 Overview
Viega gas fittings conform with the requirements of the
applicable regulations. The gas fittings have been tested
and certified by the DVGW in accordance with the following
criteria, see ÄChapter 2.1 „Standards and regulations“
on page 6:
– Leak tightness
– Higher thermal resistance (HTR)
Product information
Gas ball valve 8 from 12

The model is equipped as follows:
ncasing made of brass
ndual-sided Rp internal thread
The yellow protective sleeve on the actuating lever shows the medium
to be gas.
The model is available in the following dimensions:
Rp ½/ ¾/ 1 / 1 ¼/ 1 ½/ 2.
2.3.2 Threaded connection
Prerequisite for a threaded connection, which seals via a thread, is a
threaded pair in accordance with applicable regulations, see ÄChapter
2.1 „Standards and regulations“ on page 6
. Pursuant to these regula-
tions, a permitted threaded pair comprises a conical external thread and
a cylindrical internal thread, e. g. R ¾and Rp ¾.
Only use commercially available and chloride-free, DVGW approved
sealant in accordance with the applicable regulations to seal threads,
see ÄChapter 2.1 „Standards and regulations“ on page 6 .
2.3.3 Markings on components
The model is marked as follows:
n
MOP5 for maximum operating pressure 0.5 MPa (5 bar)
n GT1 for maximum operating pressure with HTR requirement 0.1 MPa
(1 bar)
nDVGW writing
nHTR marking
nPosition indicator
2.3.4 Compatible components
Please contact the Viega Service Center for questions on this subject.
Product information
Gas ball valve 9 from 12

2.3.5 Technical data
Observe the following operating conditions for the installation of the
model:
Use Gas installation Liquid gas installation
Operating tempera-
ture
-20° C up to +70° C -20° C up to +70° C
Operating pressure ≤0.5 MPa (5 bar)
(MOP 5)
≤0.1 MPa (1 bar)
(HTR / GT1)2)
≤0.5 MPa (5 bar)
(MOP5)1)
≤0.1 MPa (1 bar)
(HTR / GT1)2)
1) Maximum pressure – equates to the pick-up pressure of the SSV in
the pressure regulating valve
2) Operating pressure at HTR requirement max. 0.1 MPa (1 bar) (GT1)
In accordance with the applicable regulations, the scope of the oper-
ating temperature is between -20 °C and +60 °C, see ÄChapter 2.1
„Standards and regulations“ on page 6 .
2.4 Information for use
2.4.1 Corrosion
Depending on the area of use, corrosion protection measures may have
to be taken into account.
One differentiates between external pipelines (underground and over-
ground external pipelines), as well as internal pipelines.
For corrosion protection, comply with the applicable directives, see
ÄChapter 2.1 „Standards and regulations“ on page 6 .
Overground pipes and fittings in rooms do not normally require external
corrosion protection.
There are exceptions in the following cases:
nThere is external contact with materials containing chloride.
nStainless steel pipes must not come into contact with building mate-
rials or mortar containing chloride.
nThere is contact with aggressive building materials such as materials
containing nitrite or ammonium.
nin aggressive surroundings
Product information
Gas ball valve 10 from 12