"these are made for automated shops using standard “shop air” pressures from 90-120psi. Because of this, most companies certify the fittings to around double what they expect to see in standard automation applications. We have many customers in paintball, misting and greasing applications that use our fittings. The weakest link on any fitting is going to be the collet connection with the tubing and due to our one-piece collet design, ours always test higher in pressure pull tests than our competitors. These fittings are tested well above 2500psi and the major concern then becomes the tubing which I have only ever seen rated to a max of 1300 psi (high pressure tubing).