Power Plant Technology
Reliability under extreme loads
Power plant engineering places the highest demands on valves, as they must operate reliably under extreme temperatures, high pressures, and abrasive and corrosive media. Different types of power plants, such as coal- and gas-fired power plants, and processes involving water, steam and gas require maximum operational safety, long service life and absolute tightness.
Hartmann ball valves are optimally designed for these conditions: metal-to-metal sealing, robustly engineered and H₂-ready, they ensure safe operation even under extreme conditions. Thanks to certified safety and long service life, our special-purpose valves are a reliable solution for your plant
and make them a reliable solution for modern and future power plant applications.
Reliable and safe solutions
Gas turbines
In power plants, gas turbines are key units for power and energy generation. For safe operation, reliable control and shut-off of fuel and auxiliary media such as fuel gas, air and water is essential. Hartmann ball valves have proven themselves worldwide in gas turbine applications and have been used for many years for various turbine types.
With their metal sealing system, they offer maximum operational safety under demanding conditions, such as high temperatures.
They are available in various nominal sizes and pressure classes, and according to the gas turbine manufacturer’s specifications or your project-specific requirements.
Temperature
up to +315°C
Pressure
up to 160 bar
Applications
For the Siemens gas turbine SGT5-4000F (V94.3A) and the Ansaldo gas turbine AE94.3A
| TURBINE TYPE | DN | PN | SERVICE | HARTMANN ARTICLE NO. | CONSISTING OUT OF | VALVE MATERIAL | CONN. | ACTUATOR | PAGE |
|---|---|---|---|---|---|---|---|---|---|
| SGT5-4000F (V94.3A) / AE94.3A | 25 | 160 | Fuel Oil Drain | 40005338 40002145 40002128 10027695-001 | valve with actuator valve w/o adaption valve with adaption actuator with controls | Stainless Steel | G1¼” | TA 130 FM | 4 |
| 25 | 160 | Fuel Oil Drain | 40001977 40002145 40002128 10052423-001 | valve with actuator valve w/o adaption valve with adaption actuator with controls | Stainless Steel | G1¼” | TA 130 HA | 4 | |
| 25 | 160 | Fuel Oil Drain | 40005339 40000533 10057530-001 | valve with actuator valve w/o adaption actuator with controls | Stainless Steel | G1¼” | BIU10/40HFL | 4 | |
| 25 | 160 | Fuel Oil Drain | 40000399 40002145 40002108 10082328-001 | valve with actuator valve w/o adaption valve w/o adaption actuator with controls | Stainless Steel | G1¼” | TA 120/2 FM | 4 | |
| 50 | 160 | Fuel Oil Drain | 40000166 40000060 10024767-001 | valve with actuator actuator with controls | Stainless Steel | R13 | ET-S0300-5 1x SOV | 5 | |
| 50 | 160 | Fuel Oil Drain | 40005260 40000060 10079138-001 | valve with actuator actuator with controls | Stainless Steel | R13 | ET-S0300-5 2x SOV | 5 | |
| 50 | 160 | Fuel Oil Drain | 40005336 40005354 10027655-001 | valve with actuator valve w/o adaption actuator with controls | Carbon Steel | E | ET-50600-6 | 5 | |
| 25 | 40 | Purge Air | 40001190 | valve with actuator | Stainless Steel | B2 | ET-S000150-6 U | 6 | |
| 50 | 40 | Purge Air | 40000098 | valve with actuator | Stainless Steel | B2 | ET-SC00600-6 U | 7 | |
| 100 | 40 | Purge Air | 40001182 | valve with actuator | Stainless Steel | B2 | ET-SC00900-6 U | 8 | |
| 100 | 40 | Purge Air | 40001189 | valve with actuator | Stainless Steel | B2 | ET-SC00900-6 U with positioner | 8 | |
| 250 | 100 | Fuel Gas | 40001946 | valve with gearbox | Stainless Steel | RF | 9 | ||
| SGT5-2000E (V94.2) / AE94.2 | 40 | 100 | Fuel Oil Transfer | 40000103 40000146 40002120 40002103 40003531 10027624-00 10068980-002 | valve with actuator actuator with controls | Stainless Steel | R13 | ET25-2 220-04 | 10 |
| 40 | 40 | Pilot Gas Stop | 40000431 40000550 10068980-002 | valve with actuator valve w/o adaption actuator with controls | Stainless Steel | B2 | ET25-2 220-04 | 11 | |
| 100 | 40 | Fuel Gas Stop | 40000430 40000556 10068980-002 | valve with actuator valve w/o adaption actuator with controls | Stainless Steel | B2 | ET25-2 220-04 | 12 | |
| 100 | 16 | Fuel Oil | 40000537 40000537 10023817-001 | valve with actuator valve w/o adaption actuator with controls | Stainless Steel | E | ET-SC00600-6 | 13 | |
| Electric actuator for SGT5-2000E | 10068980-002 | actuator with controls | ET25-2 220-04 | ||||||
| Ask for detailed product range Further ball valves for turbines available on request. | |||||||||
Reliable solution for
Hydropower plants
In hydropower, potential energy from the difference in elevation is converted into electrical energy. As these are open systems, the water has a high oxygen and solids content, resulting in significant corrosive and erosive loads. Thanks to the metal-to-metal sealing system and the careful selection of materials, Hartmann ball valves are ideally matched to these conditions.
For safe operation
Steam in the steam cycle
Steam turbines and the associated steam cycle are used in several types of power plants, such as coal, nuclear or combined-cycle plants. Steam, water and wet steam place high demands on material selection and design with regard to temperature and pressure loads. Under these conditions as well, the metal sealing in combination with steam-resistant seals has proven to be a reliable system. With experience in design engineering for nuclear facilities, including seismic analysis, and the preparation of preliminary review documentation in the documentation department, Hartmann Valves is a reliable partner.
Reliable Shut-off
Our metal-to-metal sealing system
Metal-to-metal sealing ball valves are designed for applications where soft-seated systems reach their limits. They are used wherever demanding media, extreme pressures and temperatures, or very high actuation frequencies require a permanently reliable shut-off valve. The gas-tight sealing system meets leak rate A and ensures permanently reliable shut-off.
The sealing integrity of our valves is verified through technical tests according to the relevant regulations and in accordance with the underlying product standard. Our internal manufacturer standard exceeds the requirements of common test standards such as API 598 and DIN 12266. This provides a robust basis for very high shut-off sealing integrity in demanding applications. The internal definition of leak rate A is based on DIN ISO 5208.
The metal-to-metal sealing between the ball and seat rings ensures high wear resistance, reduced maintenance requirements and a long service life.
For safe operation
Safety Concepts
Depending on plant requirements, our ball valves can be equipped with additional safety and functional options. The selection of suitable concepts depends on the medium, pressure direction, test requirements, cycling frequencies, and customer-specific application and maintenance concepts.
Hartmann Valves’ trunnion-mounted ball valves can be designed with both double block and bleed (DBB) function and double isolation and bleed (DIB) function.
The DBB function can be implemented in a single valve (double-sided upstream sealing with bleed connection for depressurization/testing) (Hartmann Type AST), or as a Twin Ball Valve with two separate balls (Hartmann Types TSF and TST).
For the realization of the DIB function, Hartmann Valves uses double piston seat systems that can seal in both directions. Double-sided double piston seat systems (DIB1) are mainly used for gases, while single-sided double piston seat systems (DIB2) can be used for all media due to the resulting cavity pressure relief. By using double piston seat systems, two barriers can be created in one direction within a valve. When these systems are used in a Twin Ball Valve with two separate balls, up to four barriers can even be achieved in the pressure direction. Thus, these functions can significantly increase plant safety.
Custom-engineered design
Manufactured individually for your processes
The gas-tight, metal-to-metal sealing ball valves, they withstand high temperatures and pressures. Special designs offer additional safety and economic advantages.
Our low-maintenance and durable valves ensure maximum uptime in highly stressed systems.
Depending on the medium, the highest requirements are placed on sealing technology, the material used and the valve design: requirements that Hartmann products meet reliably over the long term.
Temperature
-196 °C to +550 °C
Pressure
High-pressure applications up to 1,030 bar
Media
Natural gas, hydrogen, steam, air, oil, water
Applications
e.g. in water and steam lines in coal-fired, combined-cycle and nuclear power plants; control and shut-off valves in gas and hydrogen turbines; hydropower plants with erosive media; high-temperature and high-pressure systems
Certified safety for power plant processes
Our high-performance valves comply with national and international standards, including:
- TA-Luft 2021 (Emission Control)
- ISO 15848 (for fugitive emissions)
- ATEX (for potentially explosive atmospheres)
- PED (Pressure Equipment Directive of the EU)
- SIL
- NACE
- API 6D
Our solutions for POWER PLANT ENGINEERING
2-WAY BALL VALVE
API 6A ball valves combine robust design with reliable sealing for safe use in high-pressure applications. Developed for long-lasting performance.
MULTI-WAY BALL VALVE
For safe switching and distribution of media flows, these valves offer flexible flow paths. Designed for reliable operation, short actuation times and low pressure losses.
TWIN BALL VALVE
Twin Ball Valves combine two independent shut-off systems (two balls) in one body, are bubble-tight and can be tested between the closures. Compact, safe, and space- and cost-saving.
SCRAPER VALVE BALL VALVE
Scraper valve ball valves combine shut-off and scraper valve function in one valve and enable safe launching and receiving. As a space- and cost-saving replacement for pig trap systems.
JACKETED BALL VALVE
Integrated heating keeps media flowable and ensures reliable operation. The jacketed design improves heat transfer and simplifies installation.
Contact Us
We support you throughout all project phases: from planning and design through manufacturing to installation and regular inspection.
FAQ
In which types of power plants are Hartmann ball valves used?
Hartmann ball valves are used in coal-fired, gas-fired, combined-cycle, nuclear and hydropower plants. They cover applications ranging from steam lines and natural gas and hydrogen turbines to high-pressure water systems, and offer maximum safety thanks to their metal sealing system.
What advantages do metal-seated ball valves offer in power plants?
The metal sealing ensures maximum tightness (leak rate A) and resistance to steam, pressure and temperature. This makes Hartmann ball valves low-maintenance, durable and suitable for abrasive or corrosive media.
Can Hartmann ball valves be used for hydrogen applications?
Yes. In addition to traditional power plant applications, ball valves are also being developed for the reconversion of electrical energy into chemically bound energy (e.g. hydrogen). This means they can be used in modern power-to-gas and hydrogen systems.
Which safety functions are integrated in Hartmann ball valves?
Hartmann ball valves are available with DIB (Double Isolation and Bleed), DBB (Double Block and Bleed) or Twin Ball Valve designs. These multiple barriers increase process safety and prevent uncontrolled media leakage.
Which standards and certifications do Hartmann ball valves meet for power plant engineering?
The valves meet standards such as API 6A, API 6D, TA Luft, Fire Safe, SIL and NACE. For nuclear applications, seismic analyses are also performed and preliminary review documentation is prepared.