RETENTION VALVE; TYPE AUTOMATIC RECIRCULATION; CARBON STEEL BODY MATERIAL ASTM A105; EXTREMITY FLANGE; EXTREMITY TYPE FACE WITH SURFACE; ASME B16.5 EXTREMITY STANDARD; CONSTRUCTION ASME B16.34; VERTICAL OPERATING POSITION; PRESSURE CLASS 300 # (PN 50); INPUT (SUCCESS) DN 8 INCH; OUTPUT DN 8 POL; RECIRCULATION DN 4 INCH; MANUAL STARTUP DN 3 INCH; PROJECT TEMPERATURE 140 CRANES C; FLOW Q 100 = 666.00 M 3 / H; H100 = 250.00M; FLOW O QM = 130.00 M3 / H; HM = 318.00 M; FLOW QA = 130.00 M3 / H; HA = 318.00 M; DIFFERENTIAL PRESSURE 29.31 BAR (P DIFF = P1-PN);