Dual certified PRVs

Baker Hughes, Consolidated recently launched the 1900 Series Dual Media (DM), the overpressure protection industry’s first to market and only “Dual Certified” spring-loaded safety relief valve.
API 520 Part 1 defines Dual Certified as pressure relief valves that are both vapor/gas flow certified, and liquid flow certified where dual certification is achieved without making any modifications or adjustments to the relief device when switching fluids during the flow testing.
The patented 1900 Series DM trim offers a win/win scenario for the overpressure protection industry, enabling risk mitigation in multi-case relief scenarios and/or two-phase media applications with a single economical valve.