What is the maximum PSI for cast iron?

Study for the Massachusetts Journeyman Pipefitter Exam. Tackle multiple choice questions with hints and explanations. Boost your confidence for the exam!

The maximum PSI for cast iron pipes is typically accepted to be around 250 psi. This specification is primarily due to the inherent properties of cast iron, which is a material known for its strength and durability in various pressure applications. However, its suitability for high-pressure situations is limited compared to other materials like carbon steel or PVC, which can handle higher pressures.

Cast iron has been widely used in plumbing and piping applications for many years, particularly in water and sewer systems. When operating under pressure, it is essential to stay within the material's limitations to avoid the risk of failure or fracture. Thus, the 250 psi rating reflects a safe operational range that balances the material's strength with the need for structural integrity, especially in applications where the piping system may be subjected to fluctuations in pressure.

Understanding this maximum threshold is crucial for pipefitter professionals to ensure the design and installation of piping systems meet safety standards and operational requirements, avoiding potential hazards associated with exceeding these specifications.

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