Stainless steel check valve for aggressive media and high temperatures.
The BOACHEM-RXA check valve from KSB is the ideal solution for demanding applications with aggressive, corrosive or explosive media. With its robust stainless steel construction, spring-loaded function and flange connection it offers maximum safety and reliability in the chemical industry, process engineering and food production.
The material 1.4408 sets the temperature limit of +400 °C; the permissible operating pressure falls as the temperature rises and must be taken from the pressure-temperature table. For abrasive media, Stellite facing of the seat should be considered.
| Characteristic | Value |
| Nominal pressure | PN 10 – PN 40 |
| Nominal size | DN 15 – DN 400 |
| Temperature range | -10°C to +400°C |
| Body | Stainless steel GX5CrNiMo19-11-2 (1.4408) |
| Gasket | Metallic / PTFE / EPDM / FPM |
| Installation position | Horizontal or vertical |
For the BOACHEM-RXA check valve, we also offer the option of designing the valve with a heating jacket or leakage jacket. This solution is ideal for applications where the medium must be kept at temperature or additional safety against leaks is required.
Details of the design:
Heating jacket material: Stainless steel 1.4541 / 1.4301 or 1.4571 / 1.4404
Heatable fitting: For steam, oil and process applications where temperature stability is crucial
Leakage jacket: Additional safety for critical media and aggressive liquids
Customization: Manufactured to customer specifications, including connections for heating media (steam, thermal oil)
Other flange processing possible: e.g. tongue and groove design, projection or recess in accordance with EN 1092-1
Our check valves offer a compact solution for standard installations and can be seamlessly integrated into piping systems – ideal for SKID systems, modular assemblies and complex process lines.
Whether pump station, valve stand or pipe production – our engineering teams ensure precise design and ready-to-install delivery. This saves you time, reduces interfaces and increases operational reliability.
Aggressive liquids, steam, hot water, heat transfer oil, explosive and corrosive media.
Yes, horizontally or vertically.
EN 1092, EN 12266, Pressure Equipment Directive 2014/68/EU, ATEX.
Yes, PTFE gasket and stelliting are available.
Yes, the construction is maintenance-free.
Our insulations are more than just accessories – they perfectly complement valves and systems and increase efficiency, safety and adaptability.
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