Inquiry (采购产品): testing We have a lot of blow off valves for air sytems up to 350 psi. What is the recommended time scheduale for testing of these valves by lift test and how often is it necessary to test lift pressure settings if visual inspections are good and valve has not activated in servive **** Hidden Message ***** Robert Colter 98813 Company: army corp of engineers E-mail: robert.n.colter@usace.army.mil **** Hidden Message ***** robert.n.colter@usace.army.mil