Which of the following is NOT an example of a Hexalt type anchor?

The correct answer is that a Curl is not an example of a Hexalt type anchor. Hexalt type anchors are specifically designed for certain applications involving refractory linings, typically featuring a unique shape and the ability to provide strong attachment to the lining material.

The S-Bar, Hexcel, and Tacko anchors all belong to the category of Hexalt type anchors. The S-Bar features a flat, elongated design, which aids in effective anchoring within the refractory material. Hexcel anchors, on the other hand, are often used to offer increased holding power and stability in high-temperature environments. The Tacko anchor is characterized by its distinctive design that integrates easily into the refractory lining, allowing for efficient load distribution.

In contrast, Curl anchors do not fit into this classification; they have a different design and purpose, typically not associated with the Hexalt system, which limits their use in high-temperature and structurally demanding environments. Understanding these distinctions is crucial for effectively selecting the right anchor for specific refractory applications.