RETENTION VALVE; TYPE AUTOMATIC RECIRCULATION; BODY MATERIAL CARBON STEEL ASTM A105; END FLANGE; TYPE FACE WITH RECOIL; STANDARD END ASME B16.5; CONSTRUCTION ASME B16.34; POSITION OPERATION VERTICAL; CLASS PRESSURE # 600 (PN 100); INLET (SUCTION) DN 4 POL; OUTLET (DRAIN) DN 6 POL; RECIRCULATION DN 2 POL; STARTUP DN 2 POL; DESIGN TEMPERATURE 140 DEGREES C; FLOW Q = 100 161.00M3 / H; H100 = 184.00M; QM FLOW = 75.00M3 / H; HM = 202.00M; FLOW RATE QA = 75.00M3 / H; HA = 202.00M; PRESSURE DIFFERENTIAL 18.42 BAR (P DIFF = P1-PN)