Are the brass swing check valves steam rated?

Neither the 0806xx12NL series NO-LEAD Brass Swing Check Valves (CxC) or the  0806xx11NL series NO-LEAD Brass Swing Check Valves (THREADED) are steam rated. They have a maximum temperature rating of 212°F (100°C) and a maximum pressure rating of 200 PSI WOG Non-Shock (WOG pressure rating based on ambient temperature).