Cryo technology has increasingly found its way into wide scientific fields in recent years. In research applications, liquid helium (LHe) is often used as a medium at temperatures just above absolute zero (-271 °C). Examples include the cooling of superconducting magnets, or use in cryostats, where the avoidance of heat input into the medium for precise measurements is often the main focus – which is where valves from STÖHR ARMATUREN come into their own.
XXL sizes – a size class of its own.
XXL-fittings up to DN300
Long-term experience
Many years of experience in scientific applications
Since the 1970s, STÖHR ARMATUREN has specialised in the development of cryogenic valves with vacuum insulation. We have a wealth of experience built up over almost 50 years of dealing with cryogenic and vacuum technology, and our products always meet the highest demands:
- High leak tightness at seat and to the environment
- Extremely low heat input
- High flow performance (synonymous with a high Kv or Cv value)
- Avoidance of induced heat supply from outside by diverting from the valve spindle by means of sliding thermal contacts or by using new materials for the valve spindle
- Avoidance of media contamination in the event of a fault (for example due to breakage of the bellow)
- Integration of monitoring sensors into the valve, in combination with an energy harvester
- Safety for the plant operators and for the plant itself
Requirements
Valve technology that meets rigorous demands
In addition to the suitability for a vacuum insulation, the following is required for different valve functions:
- High leak tightness at seat with shut-off valves
- High control accuracy over a setting range with many intermediate control steps for control valves, coupled with the specified control characteristic
- Filtering the medium for low pressure drop contamination (Δp) for filters
- Low opening pressure on blow-off valves
Our clients
Our clients: direct customers and end customers
Our customers in this market segment are scientific and research institutes in Germany and around the world, as well as highly specialised plant engineers and plant construction companies.
Many options
Options for adaptation to a wide variety of operating conditions
Our series 1600 valves are specially designed to meet these extreme requirements. Stem extension or diameter of the welding flange are available as well as different control characteristics (equal percentage, linear, custom individual) of the control cone. Special requirements such as resistance to magnetic fields or radioactivity can be fulfilled on demand.
Check it out
Select the fittings you need for your specification from our product portfolio, using the configurator below. For bespoke products and special orders, email your specification to sales@stoehr-valves.de. If necessary, use our online checklists to help you define the valve you need.
| Valve Series | Function | Media-Temp. | Nominal Diameters | Pressure Range | Actuator | Vacuum-Insulation |
|---|---|---|---|---|---|---|
| Valve Series | Function | Media-Temp. | Nominal Diameters | Pressure Range | Actuator | Vacuum-Insulation |
| Univers 800 | Globe Valve | Cryogenic Valve | 10 – 50 | MP (45 bar) | manual | No |
| Univers 800 | Globe Valve, check function integrated | Cryogenic Valve | 10 – 50 | MP (45 bar) | manual | No |
| Sticks 900 | Globe Valve | Cryogenic Valve | 15 | MP (25 bar) | manual | Std |
| Sticks 900 | Globe Valve | Cryogenic Valve | 15 | MP (25 bar) | pneumatic | Std |
| Sticks 900 | Control Valve | Cryogenic Valve | 15 | LP, MP (25 bar) | pneumatic adjustable | Std |
| Sticks 900 | Control Valve | Cryogenic Valve | 15 | LP, MP (25 bar) | pneumatic | Std |
| Sticks 900 | Strainer | Cryogenic Valve | 15 | MP (18 bar) | Std | |
| Univers 1200 | Globe Valve | Ambient Valve | 10 – 300 | MP | manual | No |
| Univers 1200 | Globe Valve | Ambient Valve | 10 – 150 | MP | pneumatic | No |
| Univers 1200 | Globe Valve | Ambient Valve | 10 – 40 | MP | electric | No |
| Univers 1200 | Control Valve | Ambient Valve | 10 – 150 | MP | pneumatic adjustable | No |
| Univers 1200 | Check Valve | Ambient Valve | 10 – 100 | MP | spring based | No |
| Univers 1200 | Strainer | Ambient Valve | 10 – 100 | MP | No | |
| Univers 1200 | Globe Valve | Cryogenic Valve | 10 – 300 | MP | manual | Opt |
| Univers 1200 | Globe Valve | Cryogenic Valve | 10 – 150 | MP | pneumatic | Opt |
| Univers 1200 | Control Valve | Cryogenic Valve | 10 – 150 | MP | pneumatic adjustable | Opt |
| Univers 1200 | Check Valve | Cryogenic Valve | 10 – 100 | MP | spring based | Opt |
| Univers 1200 | Strainer | Cryogenic Valve | 10 – 100 | MP | Opt | |
| Magros 1500 | Check Valve | Ambient Valve | 6 – 100 | MP | solenoid | No |
| Magros 1500 | Check Valve | Cryogenic Valve | 6 – 100 | MP | solenoid | No |
| Univers 1600 | Globe Valve | Cryogenic Valve | 2 – 300 | MP | manual | Std |
| Univers 1600 | Globe Valve | Cryogenic Valve | 2 – 300 | MP | pneumatic | Std |
| Univers 1600 | Control Valve | Cryogenic Valve | 2 – 300 | LP, MP | pneumatic adjustable | Std |
| Univers 4200 | Globe Valve | Ambient Valve | 4 – 25 | HP (250 bar) | manual | No |
| Univers 4200 | Globe Valve | Ambient Valve | 4 – 25 | HP (250 bar) | pneumatic | No |
| Univers 4200 | Check Valve | Ambient Valve | 4 – 25 | HP (250 bar) | spring based | No |
| Univers 4200 | Globe Valve | Cryogenic Valve | 4 – 25 | HP (250 bar) | manual | Opt |
| Univers 4200 | Globe Valve | Cryogenic Valve | 4 – 25 | HP (250 bar) | pneumatic | Opt |
| Univers 4300 | Globe Valve | Ambient Valve | 4 – 50 | HP (250 bar) | manual | No |
| Univers 4300 | Globe Valve | Ambient Valve | 4 – 50 | HP (250 bar) | pneumatic | No |
| Balans 7100 | Globe Valve | Ambient Valve | 10 – 40 | HP (360 bar) | manual | No |
| Balans 7100 | Globe Valve | Ambient Valve | 10 – 40 | HP (360 bar) | pneumatic | No |
| Balans 7100 | Globe Valve | Cryogenic Valve | 10 – 40 | HP (360 bar) | manual | No |
| Balans 7100 | Globe Valve | Cryogenic Valve | 10 – 40 | HP (360 bar) | pneumatic | No |
| Locks | Globe Valve | Ambient Valve | 10 | MP (24 bar) | manual | No |
| Ellips 1700 | Globe Valve | Cryogenic Valve | 8 – 100 | MP (25 bar) | manual | Opt |
| Ellips 1700 | Globe Valve | Cryogenic Valve | 8 – 100 | MP (25 bar) | pneumatic | Opt |
| Sticks 900 TD | Globe Valve | Cryogenic Valve | 15 | MP (25 bar) | manual | Std |
| Sticks 900 TD | Globe Valve | Cryogenic Valve | 15 | MP (25 bar) | pneumatic | Std |
| Sticks 900 TD | Control Valve | Cryogenic Valve | 15 | LP, MP (25 bar) | pneumatic adjustable | Std |
| Frees 1200 TD | Globe Valve | Cryogenic Valve | 10 – 50 | MP | manual | Opt |
| Frees 1200 TD | Globe Valve | Cryogenic Valve | 10 – 50 | MP | pneumatic | Opt |
| Frees 1200 TD | Control Valve | Cryogenic Valve | 10 – 50 | MP | pneumatic adjustable | Opt |
| Blasts 2600 | Relief Valve | Ambient Valve | 10 – 50 | MP | spring based | No |
| Blasts 2600 | Relief Valve | Ambient Valve | 10 – 50 | MP | spring based | No |
| Blasts 2600 | Relief Valve | Ambient Valve | 6 – 10 | MP | spring based | No |
| Axius 1400 | Check Valve | Cryogenic Valve | 6 – 80 | HP (420 bar) | pneumatic | No |
| UHP 800 | Globe Valve, Relief Valve | Ambient Valve | 10 – 15 | UHP (800 bar) | manual, pneumatic | No |
| NPPs | Globe Valve, Check Valve | Ambient Valve | 16 – 250 | 16 - 250 bar | manual, solenoid | No |
| Balans 7100 | Globe Valve | Cryogenic Valve | 40 | UHP (900 bar) | hydraulic | No |
| Balans 7100 | Globe Valve | Cryogenic Valve | 40 | UHP (900 bar) | pneumatic | No |
| Balans 7100 | Globe Valve | Cryogenic Valve | 40 | UHP (900 bar) | manual | No |
| Balans 7100 | Check Valve | Cryogenic Valve | 40 | UHP (900 bar) | solenoid | No |
| Axius 1400 | Globe Valve | Cryogenic Valve | 6 – 80 | HP (420 bar) | pneumatic | No |
Best for Helium - and nothing gets lost.
We offer solutions for liquid helium applications.Valves from STÖHR optimize effort and cost for an efficient transport of the medium to and within your gas plant.
Best for Helium
When used in 24 / 7 / 52 continuous operation, STÖHR valves are not immune to errors, despite their tried and tested design, the use of the best materials and careful processing during assembly and testing. If this happens, we offer support:
Valve Service
Exhibitions, Congresses, Events: Your chance to meet, greet and share opinions with the team of STÖHR ARMATUREN.
Exhibitions, Congresses
Discover the team behind the technology, and read about our history and progress with the development and manufacture of high-quality products for the global market since 1938.