
High-pressure components, pilot plants and pressure generation systems up to 10'000 bar, machined in Switzerland

SITEC-Sieber Engineering AG
8124 Maur (ZH) · 8123 Ebmatingen (ZH)New on Amplifa
About SITEC-Sieber Engineering AG
SITEC-Sieber Engineering AG, headquartered in Maur (ZH), develops and manufactures systems and individual components for high-pressure technology. The portfolio includes high-pressure valves, fittings, tubing and hoses, pressure vessels, pressure generators, tools and accessories as well as electrical feed-throughs up to 7000 bar. In addition, the company offers modular HP pilot plants, including for supercritical CO2 extraction from solids and liquids, high-pressure micronization (RESS/GAS), high-pressure sterilization and autofrettage, as well as pressure generation systems for ultra-high pressures up to 10'000 bar. The components are machined on CNC lathes; pressure vessels are made from austenitic and ferritic materials as well as nickel-based alloys. Customers come from pharma, chemicals, food/natural products and research and development. Production is located in Ebmatingen (ZH), headquarters in Maur (ZH).
- Site
- Maur (ZH)
- Processes
- Manufacture of pressure vessels from austenitic and ferritic materials and, Manufacture of high-pressure valves, Manufacture of fittings, Manufacture of tubing and hoses, Manufacture of pressure generators, Manufacture of high-pressure components (ATEX-certified), Coning / tube end working (sealing cone 57–58°), Thread cutting on high-pressure tubing
- Materials
- 1.4542 (17-4 PH), PTFE, Austenitic materials, Ferritic materials, Nickel-based alloys, CO2 (carbon dioxide, supercritical), Stainless steel 1.4542 (17-4 PH)
- Certificates
- ISO 9001:2015, PED 2014/68/EU Category I and II (Module A2), ATEX 2014/34/EU high-pressure valves, ATEX 2014/34/EU high-pressure components, Transfer of material identifications (TÜV), PED 2014/68/EU Cat. I/II (Module A2), ATEX 2014/34/EU, Material identification transfer (TÜV)
- Founded
- 1984
- Industries
- Pharma, Chemicals, Food/natural products, Research and development
- 01
Engineering and design
- 02
CNC turning (machining)
- 03
Tube end working (coned-and-threated ends, threads)
- 04
Assembly and final inspection
- 05
Shipping and logistics
Materials and Processes
Stainless steel 1.4542 (17-4 PH)
High-strength structural material for electrical feed-throughs up to 7000 bar, combined with PTFE seals.
Austenitic materials
For machined pressure vessels in accordance with Directive 2014/68/EU.
Ferritic materials
For machined pressure vessels in accordance with Directive 2014/68/EU.
Nickel-based alloys
For machined pressure vessels with increased requirements.
PTFE
Chemically resistant sealing material for electrical feed-throughs and multi-conductor feed-throughs.
Locations

Maur (ZH)
CHHead Office

Ebmatingen (ZH)
CHEngineering, production, logistics
- CNC lathe
Components and Systems








Inside the production










Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of pressure vessels from austenitic and ferritic materials andMachining | – | – | – | – | austenitic materials, ferritic materials, nickel-based alloys |
| Manufacture of high-pressure valvesMachining | – | – | – | – | – |
| Manufacture of fittingsMachining | – | – | – | – | – |
| Manufacture of tubing and hosesMachining | – | – | – | – | – |
| Manufacture of pressure generatorsAssembly | – | – | – | – | – |
| Manufacture of high-pressure components (ATEX-certified)Machining | – | – | – | – | – |
| Coning / tube end working (sealing cone 57–58°)Machining | high surface quality | – | – | – | high-pressure tubing 1/8"–11/16" |
| Thread cutting on high-pressure tubingMachining | – | – | – | – | high-pressure tubing 1/8"–11/16" |
| Cold bending of thick-walled high-pressure tubingForming | – | – | – | – | high-pressure tubing 1/8"–9/16" |
| Internal deburring of high-pressure tubingMachining | – | – | – | – | high-pressure tubing |
| Reworking of tube sealing cones (cone milling)Machining | finest surface quality in the sealing | – | – | – | – |
| Engineering and construction of pilot plants for supercritical extraction from solids (max. 300 bar,Engineering | – | – | – | – | CO2 |
| Polyvalent pilot plants for supercritical extraction from liquids and solidsEngineering | – | – | – | – | CO2 |
| Phase equilibrium apparatus (max. 500 bar, options 700/1000 bar)Engineering | – | – | – | – | – |
| Pilot plants for high-pressure micronization (RESS/GAS process, max. 300 bar, option 500 bar)Engineering | – | – | – | – | CO2 |
| High-pressure sterilization apparatus (max. 7000 bar, option 10 000 bar)Engineering | – | – | – | – | – |
| High-pressure autofrettage systems (max. 7000 bar, option 10 000 bar)Engineering | – | – | – | – | – |
| Pressure generation systems for ultra-high pressure (up to 10 000 bar, liquids or gases)Engineering | – | – | – | – | liquids, gases |
| Retrofit (RETROFIT) of existing high-pressure pilot plantsEngineering | – | – | – | – | – |
| Measurement data acquisition and PLC controlEngineering | – | – | – | – | – |
8 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC lathe | – | – | – | – | Ebmatingen |
| Pressure intensifier (stroke volume 18 ml, option 45 ml) | SITEC | – | max. 7000 bar / 10 000 bar | – | – |
| HP pilot plant for supercritical extraction from solids (extractor volume 1 liter, options | SITEC | – | max. 300 bar (opt. 500/700 bar), 80°C (opt. up to 200°C), CO2 flow rate 18 l/h | – | – |
| Polyvalent HP pilot plant for supercritical extraction from liquids and solids | SITEC | – | max. 300 bar (opt. 500/700 bar), column inner diameter Ø 38 mm (opt. Ø 50/65/90 mm), | – | – |
| Phase equilibrium apparatus (cell volume 25 ml, opt. 50 ml) | SITEC | – | max. 500 bar (opt. 700/1000 bar), 80–200°C | – | – |
| High-pressure micronization plant (RESS/GAS), spray column Ø 90 mm, length 1 m | SITEC | – | max. 300 bar (opt. 500 bar), CO2 flow rate 18 l/h | – | – |
| High-pressure sterilization apparatus (volume 70 ml, opt. 100 ml) | SITEC | – | max. 7000 bar (opt. 10 000 bar) | – | – |
| High-pressure autofrettage system | SITEC | – | max. 7000 bar (opt. 10 000 bar) | – | – |
Additional services
Quality and Certification
Manufacturing is carried out in accordance with ISO 9001:2015; pressure vessels are certified in accordance with Directive 2014/68/EU (Module A2, TÜV SÜD). The transfer of material identifications is covered by a TÜV certificate; high-pressure valves and components are ATEX-certified.
| Evidence | Ebmatingen (ZH) | Maur (ZH) |
|---|---|---|
| ISO 9001:2015 | ||
| PED 2014/68/EU Cat. I/II (Module A2) | ||
| ATEX 2014/34/EU | ||
| Material identification transfer (TÜV) |
History
- 1984
Rolf Sieber, a graduate mechanical engineer with many years of experience in high-pressure technology, entered the market under the name SITEC.