Used to inspect PET and HDPE containers for low pressure caused by misplaced caps, stress cracks, pinholes and other defects, the filtec pressure/leak detector has a beltless system that eliminates the squeezing of bottles to detect improper pressure. Precisely positioned guide rails firmly support each bottle while it is inspected by an intelligent sensor utilizing a proprietary algorithm. When the pressure is outside acceptable limits, a defect is indicated, and the bottle is rejected from the line.