6 INCHES, 300, SCH STD, A105 CS BODY AND SEAT, 316SS TRIM, 17-7 PH SS SPRING, DOUBLE FLANGED CONNECTIONS, WITH MANUAL (BYPASS) RESET SYSTEM, MEDIA: AMMONIA (LIQUID), ORIENTATION: HORIZONTAL AT NORMAL FLOW AND CLOSING FLOW, NORMAL F LOW / DP AT NORMAL: 28 M³/HR / 0.15 PSID PRESSURE DROP, MAX NORMAL FLOW / DP AT MAX NORMAL: 37 M³/HR / 0.27 PSID PRESSURE DROP, CLOSING FLOW / DP AT CLOSE: 55.5 M³/HR / 0.60 PSID PRESSURE DROP