Steam Safety Relief Valves, ASME Section I
1/2 x 3/4 to 6 x 8 in. (15 x 20 to 150 x 200mm)
Series Figure 31 Steam Safety Relief Valves are ASME section I valves used on steam boilers with operating pressures from 5 to 250psi (.34 to 17.2 bar). Series Figure 31 is a high capacity safety relief valve with a top guide and full nozzle. It consists of a bronze body (sizes 1/2 to 2 1/2 in.) with NPT threaded male inlet and threaded female outlet (drain) connections, or a cast iron body (sizes 1 1/2 to 6 in.) construction with flanged connections. ASME, Section I rated.
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