Yates Industries has always been known for quality, consequently, it was a seamless transition to become ISO certified in 2000. We are currently ISO 9001: 2008 certified. With diligent attention to detail and quality, we offer one of the industries best warranty policies. Three years on standard N.F.P.A. mounting style Yates cylinders, one year on custom and special manufactured cylinders, and six months on repaired cylinders.