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SKU RSV-RK86 Category

Check valve RK86

High-pressure valve for steam and aggressive media up to 400°C and PN40.

Data sheet

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Armaturenfabrik GESTRA DISCO® Rückschlagventil RK86 für Hochdruck, Zwischenflansch, PN40, DN15–DN200

Product information

The RK86 check valve from GESTRA is the perfect solution for high-pressure and high-temperature applications. With its robust chrome steel and stainless steel construction, spring-loaded function and compact design, it offers maximum safety and reliability in power plants, chemical plants and process plants.

Special features

  • Intermediate flange version to EN 1092, PN10/16/25/40
  • ASME Class 125/150/300 optional
  • Chrome steel or stainless steel body (RK86A for higher temperatures)
  • Temperature range: -10°C to +400°C (RK86), up to +550°C (RK86A)
  • Nominal pressure: PN40 (ASME Class 300 up to 51.1 bar)
  • Seat seal: Metallic (optional EPDM, FPM, PTFE)
  • Any installation position (horizontal or vertical)
  • With earthing connection as standard

Advantages

  • Suitable for high-pressure and high-temperature areas
  • High corrosion resistance
  • Maintenance-free construction
  • Compact short length according to EN 558-1, series 49
  • Optional special springs for defined opening pressures (up to 3000 mbar)

Variants

  • Sizes: DN15-DN200
  • Materials:
    RK86: Chrome steel / cast steel
    RK86A: Stainless steel for higher temperatures and aggressive media
  • Special versions:
    PTFE gasket for aggressive media
    Nimonic® springs for extreme temperatures
    Silicone-free, oil and grease-free, stroke limitation for reduced volume flows

Areas of application

  • Power plants
  • High-pressure steam systems
  • Chemical and petrochemical industry
  • SKID systems and pipe assemblies
  • Food and pharmaceutical industry (RK86A pickled)
CharacteristicValue
Nominal pressurePN 40 / ASME Class 300
Nominal sizeDN 15 –
DN 200
Temperature range-10°C to +400°C (RK86),
to +550°C (RK86A)
BodyChrome steel 1.4107 /
Stainless steel interior parts
GasketMetallic / EPDM / FPM / PTFE
Installation positionAny

Check valves for SKID systems and pipe assemblies

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.

Your advantages:

  • Ready-to-install SKID solutions: We supply complete pipe assemblies with integrated check valves.
  • Standard-compliant design: Adaptations in accordance with EN 1092-1, ASME B16.5 and Pressure Equipment Directive 2014/68/EU.
  • Individual configuration: For water, steam, gas and aggressive media – including automation and documentation.

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.

Learn more
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FAQs

Which media are suitable?

Steam, hot water and aggressive media.

Yes, horizontal and vertical installation position possible.

EN 1092, EN 12266, Pressure Equipment Directive 2014/68/EU.

Yes, PTFE gasket, Nimonic® springs and ASME versions are available.

Yes, the construction is maintenance-free.

Insulation – In combination with fittings and containers

Our insulations are more than just accessories – they perfectly complement fittings and systems and increase efficiency, safety and adaptability.
Order and configure now.

We offer:

  • Custom-made insulating pads to fit your fitting
  • Heating jacket integration – reliable even under extreme conditions
  • Insulation jackets and pipe insulation for SKID assemblies – ideal for modular systems and complex systems
  • Special solutions for high temperatures – for power plants, the chemical and process industries
Insulations
Heating jackets for fittings
Armaturenfabrik Valve insulation High-temperature pipe insulation with IFS-Plast25 insulation pads and IFS-MW20 mineral wool for SKID systems, process plants

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Benefit from our expert knowledge in process monitoring. Our experienced team will provide you with sound advice on selecting the optimum products for your specific requirements. Arrange your personal consultation now!
Armaturenfabrik Industriefabrik Schneider Consulting for industrial valves, tank construction, contact the company

Contact person
Emily John

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