How many general classes of malleable iron fittings are available?

Malleable iron fittings are categorized based on their mechanical properties and manufacturing processes. Specifically, there are two general classes of malleable iron fittings: the first is designed for standard pressure applications, while the second is intended for high-pressure or more demanding environments. Each class is characterized by different tensile strengths and usage scenarios, making it essential for pipe fitters to understand the classifications when selecting fittings for plumbing and piping systems to ensure both safety and functionality.

The differentiation between these two classes allows for proper application and adherence to building codes, ensuring that the fittings chosen can withstand the conditions they will face in service. Understanding these classifications is crucial for anyone involved in the installation or maintenance of piping systems.