Robust flanged check valve for hot water and steam up to 350°C.
The BOA-R check valve from KSB is a high-grade solution for hot water, steam and heat transfer oil applications. With its robust design, spring-loaded check cone and flange connection it offers maximum operational reliability and a long service life – ideal for heating, process and industrial plants.
Sizes: DN15-DN350
Materials:
EN-GJL-250 (grey cast iron) up to 300°C
EN-GJS-400-18-LT (ductile iron) up to 350°C
Special versions:
Hochtemperaturfarbe
Low-temperature bolts down to -30°C
Certification to customer specification
Because the cone is spring-loaded, the BOA-R closes independently of the installation position and even with low reverse flow. The body material determines the temperature limit: grey cast iron up to 300 °C, ductile iron up to 350 °C.
| Characteristic | Value |
| Nominal pressure | PN 6 / PN 16 |
| Nominal size | DN 15 – DN 350 |
| Temperature range | -10°C to +300°C / +350°C |
| Body | Cast iron EN-GJL-250 / ductile iron EN-GJS-400-18-LT |
| Gasket | CrNi graphite |
| Installation position | Horizontal or vertical |
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.
Warm water, hot water, saturated steam, heat transfer oil and neutral liquids.
Yes, horizontal or vertical (with or without spring).
EN 1092, EN 12266, Pressure Equipment Directive 2014/68/EU, ATEX.
Yes, available oil-free and grease-free.
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.
Order and configure now.
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