INSPECTION& MAINTENANCEBULLETIN
Remove the valve body and stem from the press taking care to prevent the stem from Machining,grinding,weldingorotheralterations The ARI 1118 and ARI 1148 safety relief valves are designed to operate at 75 psig. The start to discharge pressure (STD) must be 75 psig +/ 3 psig and vapor tight at 60 psig minimum.