Check valves with hydraulic brake system

Konrad double eccentric check valves with hydraulic brake system

In collaboration with Konrad GmBh., we supply double eccentric check valves with hydraulic brake system for cooling water, sea water, coke gas and other demanding conditions. Konrad’s patented Exentromat® check valves have a double eccentric disc and a welded casing made of forged steel or stainless steel. Thanks to this high-quality design, the Konrad valves can be seen as rock-solid valves that realise very long operating lives.

The Konrad non-return valve with hydraulic brake system is available as a check valve or as a combined check valve-butterfly valve. It offers 100% gas-tightness, bi-directional if so desired. In the event of an emergency or maintenance, the valve can be locked in opened or closed position by means of a gearbox. Because each individual part can be manufactured from multiple materials, this valve can be perfectly adapted to different circumstances.

Terugslagkleppen met hydraulische rem


  • Range: DN50 to DN2000
  • Pressure: 0 barg to 63 barg (PN10-63 and 150lbs.-300lbs.)
  • Temperature: -196⁰C to 550⁰C
  • Design: 1-piece casing
  • Tightness: uni-directional tightness (EN 12266-A)
  • Casing material: steel, stainless steel
  • Sealing material: EPDM, NBR, Viton, metal, hybrid seals
  • Exotic materials possible: yes
  • Available as a 100% check valve or with gearbox for manual operation


Due to the robust design and the double eccentric seal, this valve is suitable for the most severe conditions. For this reason, this valve is often used to shut off cooling water, seawater, coke gas, steam and other mediums as they offer a long working life without maintenance. The version with hydraulic brake system is recommended for any application in which quick closing is undesirable to prevent water hammer.

Product request

Request your product by completing the form. Do you have any questions about Check valves with hydraulic brake system? Feel free to write these down on the form as well. Our specialists will contact you directly to discuss your needs. 

Need advice on what applies in your situation? Contact us.