High-pressure valves 

Valves based on ATEX 1,000–10,000 bar
Hand valves, metering valves 1,000–10,000 bar
Micrometering valves 1,000–7,000 bar
Piston type air-operated valves 1,000–7,000 bar
Diaphragm type air-operated valves 400–10,000 bar
High-temperature valves 1,000–4,000 bar
Special valves max. 2000 bar
Laboratory valves LHP 1,000 bar
Motor-driven valves 1,000–7,000 bar
Air-operated control valves max. 4,000 bar
Test bench valves max. 90°C -0.8–+40 bar
Test bench valves max. -40–+120°C max. 500 bar
Test bench valves max. -40–+120°C max. 300 bar
 

Fittings

HP Connectors 1,000–10,000 bar
Standard fittings 1,000–10,000 bar
Special fittings, reducers, adapters max. 7,000 bar
Swivel joints 1,500–4,000 bar
Check valves 2,000–10,000 bar
Safety heads 10–7,000 bar
Safety relief valves 500–4,400 bar
Relief valves 4,000 bar
Filters 1,000–7,000 bar
Standard LHP fittings 2,000 bar
 

Tubing and hoses

High-pressure tubing 1,200–11,000 bar
High-pressure hoses 3,200 bar
    
 Assembly instructions for LHP tubes (1/8" and 1/16")
Sizing of high-pressure tubing systems
 

Pressure vessels    

Optical cells and windows units 100–7,000 bar
Optical cells for in-line monitoring 100–1,000 bar
 
Optical cells:
Reliable optical monitoring of chemical and physical characteristics of liquids, gases and solids at max. pressures from 100 up to 7,000 bar.SITEC-Sieber Engineering AG is authorized by TÜV to design and maunufacture pressure vessels according to PED category I and II.
 

Pressure generators

Hand pumps 300–7,000 bar
Motor-driven pumps 300–7,000 bar
Pressure intensifiers 7,000 bar, 10,000 bar
Air driven diaphragm type compressors 1,000 bar
Gear pumps max. 700 bar
Hand lever pumps 500–1,000 bar
 

Pilot units for supercritical fluid extraction (SFE) of solids

Selective separation of valuable thermolabile components from solid raw materials using a supercritical gas as solvent.   

Standard designOptionsMax. operating pressure300 bar 500, 700 bar
Max. operating temperature 80°C120, 150, 200°C
CO2 flow capacity 18 l/h10, 30, 50, 100 l/h
Extractor capacity 1 litre2, 4, 6, 10, 20 litres
 

Multi-purpose pilot units for supercritical fluid extraction (SFE) of liquids and solids

Selective separation of valuable thermolabile components from solid and liquid raw materials using a supercritical gas as solvent. 

Standard designOptionsMax. operating pressure300 bar500, 700 bar
Max. operating temperature 80°C120, 150, 200°C
CO2 flow capacity 18 l/h 10, 30, 50, 100 l/h
Extractor capacity 1 Liter 2, 4, 6, 10, 20 litres
Column interior diameter Ø 38 mm Ø 50, 65, 90 mm
Column internal lenght 2 m 3, 4, 5 m
Liquid capacity 2 l/h 4, 10, 18 l/h
 

Phase equilibria apparatus

System for fast determination of solubility data and for the observation of phase behaviour at high-pressure conditions, as base for supercritical fluid extraction processes. 

Standard designOptionsMax. operating pressure 500 bar 700, 1,000 bar
Max. operating temparature 80°C 120, 150, 200°C
Equilibria cell capacity 25 ml 50 ml
 

Pilot units for high-presssure micronization and spray drying (RESS/GAS)

High-pressure micronization (RESS/GAS) is used to generate very fine and uniform powders or well defined geometries of solid particles by expansion of a high-pressure fluid. 

Standard designOptionsMax. operating pressure 300 bar 500 bar
Max. operating temparature 80°C 120, 150, 200°C
CO2 flow 18 l/h 10, 30, 50, 100 l/h
Column interior diameter Ø 90 mm Ø 60, 110, 160 mm
Column internal lenght 1 m 0.4, 2 m
 

Pilot units for continuous supercritical fluid reactions

Performing a reaction at supercritical conditions enhances the conversion rates and the space-time yield. Smaller reactors can be used for the same amount of reaction product. 
 
Standard design OptionsMax. operating pressure 50–1,000 bar 
Max. operating temparature 20–500°C
 

Pilot units for high-pressure sterilization

Applying ultra-high-pressure to pharmaceutical or natural products leads to an inactivation of germs without thermal alteration of the products.

Standard designOptionsMax. operating pressure 7,000 bar 10,000 bar
Max. operating temparature 80°C 120°C
Sterilization autoclave 70 ml 100 ml
 

Units for high-pressure autofrettage

Treatment of high-pressure components (e.g. fuel-injection tubings) to increase the fatigue limit under cycling pressures. 

Standard designOptionsMax. operating pressure 7,000 bar 10,000 bar
Stroke capacity of intensifier 18 ml 45 ml
 

Ultra-high-pressure generation systems

Systems for the generation of very high pressures (up to 10,000 bar / liquids or gases) based on hand pumps, electrical piston pumps or intensifiers.

Standard designOptionsMax. operating pressure 7,000 bar 10,000 bar
Stroke capacity of intensifier 18 ml 45 ml
 

Retrofit of existing pilot units

Modular design allows technical upgrading and extension of existing high-pressure pilot units. 

Picture shows pilot unit for the extraction of caffeine from coffee beans (right part) which was adapted for the treatment of tea leaves with water saturated carbon dioxide (left part).