Rockvalves Approaches to Sour Service Gate Valve Selection via NACE
Sour Service Gate Valve selection begins with a clear understanding of the conditions that trigger compliance needs under NACE MR0175 ISO 15156. Environments containing free water and hydrogen sulfide above a partial pressure of 0.0003 MPa require materials resistant to sulfide stress cracking and related forms of degradation. Carbon and low alloy steels must stay at or below 22 HRC including...
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