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Metal non-return valve

GEMÜ R91

Configure
Double-leaf check valve made of blue cast iron with stainless steel flaps and central spring mechanism for industrial applications.

Non-return valve in double wing design

Product information

The GEMÜ R91 is a metal dual plate check valve with flange connection and standardized length to DIN EN 558-1. The valve body, plates and seals are available in various materials. In the version with metallic seal, the GEMÜ R91 valve can be used at high temperatures up to 300 °C.

Key features

  • Suitable for low and high temperatures
  • Standardized length to DIN EN 558-1, series 16
  • Available as option free of oil and grease
  • Drip and bubble-tight to EN 12266-1/P12, leakage rate A to G
Double-leaf check valve made of blue cast iron with stainless steel flaps and central spring mechanism for industrial applications.

Technical features

Parameters
Value
Media temperature
-200 to 300 °C
Operating pressure
0 to 16 bar
Nominal sizes
DN 50 to 600
Connection types
Flange
Connection standards
ANSI
ASME
EN
Body materials
1.0619, galvanized cast steel material
1.4408, investment casting material
EN-GJS-400-15
Seal materials
EPDM
FKM
NBR
Spring materials
1.4571, spring steel
Conformities
EAC
WRAS
Plate material
1.4408, investment casting material
1.4469, duplex cast steel material
EN-GJS-400-15, SG iron material

Suitable services

  • Expert knowledge for your applications

    Training

    Deepen your expertise in valve technology and plant control. Our training courses provide practical content to help you design processes that are safe, efficient, and compliant with standards.

  • Ensure longevity and reliability

    Maintenance

    Regular maintenance ensures consistently stable processes. Our service teams ensure the availability of your systems and reliably extend the service life of your components.

  • Fast, efficient, and precise

    Repair

    When it comes to repairs, every minute counts. Our experts analyze, repair, and test reliably - using original spare parts, technical precision, and a focus on minimizing downtime.

  • Intelligent networking with GEMÜ CONEXO

    Digital support

    CONEXO makes maintenance digital: RFID technology and mobile apps enable the unique identification of your components and document maintenance processes transparently.