American CNG Type 4 cylinders pair a polymer liner with a full carbon fiber overwrap, giving heavy-duty refuse and vocational fleets a lightweight, high-capacity way to carry CNG. Like any high-pressure component, they stay safe only when they're handled, installed, fueled, and inspected the right way.
Our Care & Maintenance Manual covers all of it: mounting and valve installation, fill limits, inspection schedules, how to grade damage, and when a cylinder has to come out of service. If you fill, install, or inspect these cylinders, keep a copy handy.
