... both a safety valve and circulating valve. The rupture disk (RD) safety circulating valve functions as both a safety valve and ... .00(152.4)114,000(60782)15,000(1034)1.23(7.94)437/83.90(9.91)1.80(4 ... ,000(1034)3.14(20.26)4 5'' Rupture Disk (RD) Safety Circulating Valve