
Rotarex · Specialty gas systems
Bellows low to high pressure valve for HP, UHP, cryogenic gases and fluids – K900
Manufacturer product images · for reference

K900 is a stop globe valve with replaceable bellows sealing. It is dedicated to low pressure at cryogenic temperature and can be actuated by a manual handwheel or a pneumatic actuator. The valve is ideally suited for liquid nitrogen and liquid oxygen, pure and ultra pure gases or liquids, combustible gases or liquids, oxidizings gases or liquids, toxic and corrosive gases or liquids, radioactive gases or liquids and noble gases or liquids.
- 100% Helium leak test performed on all valves
- Sustainable metallic bellows providing a high internal/ external tightness
- Fluid specific seat material as standard options: Metal - Metal on request
- Visual Open-Close indicator for both manual and pneumatic versions
- Individual serial number for full traceability
- Corrosion resistant internal option available: Hastelloy® bellows
- Electropolished surface roughness
- 100% degreased for Oxygen use
- Cryogenic extension
| Brand | Rotarex |
|---|---|
| Category | Specialty gas systems |
| Fluid media | Standard, high and ultra-high purity and corrosive gases or liquids |
| Temperature range | 77.15 K to 523.15 K (-196°C to +250°C) |
| Flow capacity (cv) | See table above |
| Max. working pressure | See table above |
| Nominal seat diameter | See table above |
| Pneumatic actuator operating pressure | 0.5 - 0.7 MPa (5 - 7 bar) |
| Certified max. helium outboard leak rate (at max. pressure) | ≤ 1.10 -10 Pa.m 3 .s -1 |
| Certified max. helium across the seat leak rate (at max. pressure) | ≤ 3.10 -10 Pa.m 3 .s -1 |
Product information and images are compiled from the manufacturer's own publications; they do not depict a Sedan Mühendislik installation. Technical data is confirmed before ordering.





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