Lafiyabawul4.5A25 bawul ne na musamman wanda yawanci ana rufe shi a ƙarƙashin aikin karfi na waje. Lokacin da matsin lamba na matsakaici a cikin kayan aiki ko bututun mai ya wuce ƙimar ƙayyadadden ƙayyadaddun, ana iya hana matsakaici matsakaiciyar ƙimar da aka ƙayyade ta hanyar dakatar da tsarin. Amincewa mai aminci shine bawul na atomatik, wanda aka yi amfani da shi akasarin a cikin kwalba, da tasoshin matsin lamba da bututu. Matsanitin sarrafawa baya wuce ƙimar ƙayyadadden ƙayyadadden, wanda ke taka muhimmiyar rawa wajen kare amincin mutum da kayan aiki. Za'a iya amfani da ƙimar aminci na allura bayan gwajin matsa lamba.
Laifin Valve 4.5A25 yana taka rawa a cikinjanaretatsarin sarrafa hydrogen. Lokacin da tsarin matsi ya wuce darajar ƙayyadadden ƙayyadaddun, da aminci bawul din za a buɗe don fitar da wani matakin da ba shi da izini, don tabbatar da cewa tsarin ba zai wuce matsi ba.