HYDROGEN READY?!

BALL VALVES, WELLHEADS AND TESTS

FOR HYDROGEN APPLICATIONS

The right selection of materials and reliable

leak-tightness tests ensure safety
AREAS OF APPLICATION

Special valves, which have evolved for the demanding hydrogen medium, have been
used in the petrochemical industry for many decades. With energy transition, hydro-
gen will be found increasingly in other fields of application – from electricity gen-
eration (such as power-to-gas), through transport (in natural gas grids or hydrogen
pipelines), to processing and mobility.
The underground storage of hydrogen in salt caverns constitutes an environmentally
friendly and safe solution for storing large amounts of energy to balance between
power generation and demand.

Gas grid + H2 Industry

(petrochemical,
smelting etc.)

H2 Pipeline

Refinery
Compressors

Underground
Heating
storage

Mobility
H2
Gas + H2

Generation Transport Storage Use

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SOLUTIONS

BALL VALVE
Durable special valves provide a reliable shut-off

• True metal-to-metal seal between ball and seat ring

• Gas-tight, even at high pressures up to 690 bar
• Special design for temperatures up to 550°C
• High cycles up to 200,000 per year
• Two independent barriers – Double Isolation and Bleed (DIB)
• Test in the pipeline – Double Block and Bleed (DBB)
• Triple sealing technology

WELLHEAD
Secure interface with underground storages

• Ball valves acc. to API 6A with DIB in large diameters up to 13-5/8“

• Doubled sealing at the flange connection
• Integration of several components in one block
(fewer flange connections)
• Metallic seals at the wellhead
• Special designs for:
• Control lines
• Load measurement using strain gauges
• Electric pumps

REFERENCES

Power-to-Gas Petrochemical Petrochemical

DN 25 (1“) PN 100 (ANSI 600) DN 200 (8“) PN 420 (ANSI 2500) DN 600 (24“) PN 420 (ANSI 2500)
OP: 63 bar at 40°C OP: 184 bar at 380°C OP: 191 bar at 426°C

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HYDROGEN
TESTS

In future the challenging medium hydrogen will be utilised across increasing fields
of application. All components in direct contact with hydrogen must be suitable and
tested leak-tight in order to guarantee safe operation. Hydrogen valves and
wellheads must therefore meet the design criteria and metallurgy for a leak-tight
and secure hydrogen application.

Hartmann offers two hydrogen tests for both Hartmann ball valves and wellheads
as well as for the products of other manufacturers (based on documentation).

MATERIAL SUITABILITY TEST

Molecular hydrogen H2 is comparatively stable and marginally reactive,

therefore corrosion in the conventional sense is unlikely. So-called hydrogen
embrittlement, i.e. hydrogen induced stress corrosion (see image), presents
a risk for highly stressed pressurised components which requires particular
consideration. Within the scope of the material suitability test, the material
selection is comprehensively tested for hydrogen application.

© CEphoto, Uwe Aranas

The test is performed on the basis of the following standards:

• Pressure Equipment Directive 2014/68/EU (DGRL)
• API 6A, API 6D, ASME
• NACE MR175 / DIN EN ISO 15156
The following criteria are considered:
• Hardness
• Surface hardness
• Ductility
• Heat treatment and structure
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TEST FOR HYDROGEN LEAK-TIGHTNESS

Being a small molecule, hydrogen can migrate through sealing elements. A comprehensive
seal test provides assurance that the threshold values are adhered to and fugitive emis-
sions are minimised.

• The measurement of external leak-tightness is by means of mass spectrometer

• Forming gas in accordance with DIN EN ISO 14175 is used as the test medium
• The leak-tightness is measured based on DIN EN ISO 15848
(with appropriate threshold values)

YOUR BENEFITS

These hydrogen tests performed individually or combined save you time and effort
with in-house testing and provide operational safety:

• Confirmed hydrogen compatibility of the metallic materials

• Achievement of the highest leak-tightness requirements through standardised tests
• Upgrading of inventory valves by Hartmann experts
• Long service life, even at high pressures

VERIFIED SUSTAINABILITY
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QUALITY MADE
IN GERMANY
We start where the range of stand-
ard products ends: Hartmann devel-
ops tailor made high performance
components of the highest quality.
Safe. Reliable. Long-lasting.

INDIVIDUAL HARTMANN VALVES & WELLHEADS

DESIGN The family-owned Hartmann Valves GmbH is one of the
Our sales and design engineers eagerly await leading manufacturers of special ball valves, scraper
your enquiries from the high performance sec- valves and wellheads. Our high performance compo-
tor. In close collaboration we develop suitable
nents are installed all over the world - in the crude oil,
components for your special applications.
natural gas, (petro)chemical industry as well as in power
plant technology, geothermal and other renewables such
SOLUTIONS FOR as power-to-gas.
EXTREME AREAS All products are designed to individual requirements
and equipped with our metal-to-metal sealing system.
Hartmann ball valves and wellheads are de-
Design, assembly and tests are carried out solely in our
signed for pressure classes up to 690 bar, tem-
factories in Celle and Burgdorf-Ehlershausen. Hartmann
peratures from -200 to +550°C as well as for high
is now run by the third family generation and have de-
cycle operations and media of all types.
veloped into an international system supplier that today
employs over 170 people.
QUALITY
THAT PAYS
Durable and low maintenance products reduce A GLIMPSE INTO OUR PRODUCTION
the life cycle costs of your plants. This is why www.hartmann-valves.com/en/film
we develop, assemble and test exclusively in
Germany.

EXPERTISE & CONSULTATION

FROM A SINGLE SOURCE
You profit from more than 70 years experience
during all project phases. We provide you with
support, from consulting, development right
through to installation and maintenance service.

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 CONTACT

HARTMANN VALVES GMBH

Bussardweg 15
31303 Burgdorf-Ehlershausen
Germany

Sales
sales@hartmann-valves.com
+49 5085 9801-59

Service
service@hartmann-valves.com
+49 5141 3841-10

www.hartmann-valves.com