Low-noise heating fitting with O-ring damping for hot water systems.
The RK70 check valve from GESTRA is specially designed for heating and hot water systems. With its compact intermediate flange design, low-noise function and O-ring damping, it offers maximum operational safety and comfort in closed systems.
| Characteristic | Value |
| Nominal pressure | PN 6 |
| Nominal size | DN 15 – DN 200 |
| Temperature range | -30°C to +130°C |
| Body | Brass (DN15-100) / Cast iron (DN125-200) |
| Gasket | Plastic / EPDM |
| Installation position | Any |
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.
Heating water and neutral liquids.
Yes, horizontal and vertical installation position possible.
DIN 2501, EN 558-1, Pressure Equipment Directive 2014/68/EU.
Yes, without spring for vertical lines.
Yes, the construction is maintenance-free.
Our insulations are more than just accessories – they perfectly complement fittings and systems and increase efficiency, safety and adaptability.
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