Definition(s)
Utility Tip or Pipe-Flare Tip
The simplest flare-tip design is commonly referred to as a utility or pipe-flare tip and can consist of little more than a piece of pipe fitted with a flame retention device for flame stability at higher exit velocities (the upper portion is typically stainless steel to endure the high flame temperatures) and a pilot for gas ignition.
Source: API STD 521, Pressure-relieving and Depressuring Systems, Fifth Edition, January 2007 (Addendum May 2008). Global Standards