Depressurize the Air System

jack stands up a second peg i still hear air pressure coming out of that fitting even though i dump the supply on the inside because my air seat is like disconnected for some reason when i was looking at it i found the line coming out of the floor just has like a t-valve on it so there must be something wrong with the air seat or the whoever had this before wouldn't have disconnected it so i just use that t-valve to dub the supply but there's still pressure back there so i'm going to go inside and manually dump as if i were going to lower the rear maybe i'll do the front too just because like i don't it's on jack's stance it's not going to go anywhere but i don't want to pull that off and hear it like creaking or anything because um you know my laugh my my life will flash before my eyes and i'm not trying to be a parking lot stain so i'm trying to go about this as carefully as i can i can hear it releasing i totally dumped everything even the front just because i don't want to even find out if that matters if it's stumped or not and it's reading nothing psi back here so we should be okay to pull that line off now