GESTRA GESTRA RK86/RK86A Check Valve

The GESTRA RK86 check valve is a high-performance wafer-type check valve designed for industrial fluid systems for liquid, gas and steam media.GESTRA, a leading global valve brand, is renowned for its durability and installation flexibility, and is used in a wide range of applications in the steam system, chemical and pharmaceutical sectors. Whether it's preventing the backflow of media or ensuring system safety, GESTRA RK86 check valves provide reliable performance support. Products comply with EN and ASME standards to ensure high quality and compatibility.

Key Product Features

• design innovation: Wafer design with extremely short overall length in accordance with EN standards for easy clamping between PN 10/16/25/40 flanges. Equipped with a spring mechanism, it supports installation in any position (horizontal, vertical or inclined) without considering the effect of gravity.
• Pressure and temperature range: Supports pressure ratings from PN 6 to PN 40 and temperatures from -40°C to +150°C (depending on seal material). Suitable for high pressures and highly corrosive environments, the RK86A variant is particularly suitable for cryogenic or corrosive fluids.
• Low pressure drop and high efficiency: Low valve opening pressure ensures smooth passage of fluids and reduces system energy consumption. Metal-to-metal or soft seal options (e.g., EPDM, FPM, PTFE) provide excellent sealing performance.
• Durable: Anti-corrosion design for water, steam, gas and other media to avoid equipment damage caused by reverse flow.

Detailed specification parameters

Below are the main specifications for the GESTRA RK86 Check Valve, based on the official data sheet for easy selection by industrial users:

• Size range: DN 15-200 (NPS 1/2-8).
• Material composition::
  • Body: Chrome steel 1.4317 (equivalent to ASTM A743-CA6-NM) for corrosion resistance.
  • Valve disc: Stainless steel 1.4571 (equivalent to AISI 316 Ti) to ensure long-term stability.
  • Seal: Metal to metal (standard), or EPDM/FPM/PTFE soft seal (optional, for different media).
  • Spring: High-strength stainless steel to provide reliable closing force.
• connection standard: Compatible with ASME Class 125/150/300 flanges for easy integration into existing piping systems.
• application scenarioIdeal for use in steam boilers, compressed air systems, chemical piping, food processing and pharmaceutical equipment, the RK86A model has enhanced low-temperature resistance for use in harsh industrial environments.

Why choose a GESTRA RK86 check valve?

The GESTRA RK86 non-return valve not only provides excellent reliability and ease of maintenance, but also reduces the risk of system failure and improves overall efficiency. As the industrial valve of choice, it helps optimize fluid control and extend equipment life. Whether it's a new construction project or a system upgrade, the GESTRA RK86 is designed to meet the most demanding requirements.

Links to related documents

To ensure transparency and accuracy, below are links to official documents that you can download to view detailed specifications, installation instructions and pressure/temperature charts:

• GESTRA RK86 Official Datasheet PDF - Includes full specifications and diagrams.
• GESTRA Global Product Page - Summarize information on features and variants.
• Additional Specification Inquiry PDF - Provides flange compatibility details.