Consolidated 1900/1900 DM Series Safety Relief Valves With the Eductor Tube Advantage

The highly adaptable 1900 & 1900 Dual Media (DM) Series Safety Relief Valves are designed to meet numerous application requirements.


  • Orifices: D – J Orifices
  • Set pressure: Up to 10,000 psig (689.5 barg)
  • Sizes: 1-13/16” x 3, 3 x 4
  • Inlet connections: Studded API 6A 10/15K flanges with ring joint nozzle, Grayloc™ and Techlok™ hubs available
  • Outlet connection: Studded ASME Class 300
  • Body/bonnet: Duplex (F51, F53, F55), F65 (non-code) alloy, SA182 F316 SS, SA105 CS, SA350 LF2 CS
  • Trim: Nozzle/Disc – Inconel 718 is standard, F51/55 duplex materials with Stellite hard-facing is optional
  • Spring material: Inconel X-750
  • Seat design: Metal seat design only


  • Steam
  • Organic heat transfer media
  • Liquid
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