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61SOC Coaxial <br />61SOC Coaxial <br />61SOP <br />The OPW 61 SOP is used in poppeted coaxial fill applications in areas where CARB <br />requirements have been adopted. (CARB Executive order G-70-52AN). A special poppeted <br />adaptor fitting allows the vapor return path to open only when a fill elbow is connected, thus <br />preventing fugitive emissions. <br />61SOP <br />