What is the maximum pressure a cast iron header should not exceed?

The maximum pressure that a cast iron header should not exceed is 160 psi. This limit is established primarily due to the structural integrity and material properties of cast iron, which can become brittle and less reliable at higher pressures. Exceeding this pressure can lead to catastrophic failures, such as cracking or even explosion, posing significant safety risks.

Understanding the materials used in boiler systems is crucial because different materials have different tolerances and characteristics under varying pressures and temperatures. Cast iron, while known for its durability at lower pressures, does not handle high-pressure environments as safely as other materials, like steel. Adhering to the maximum pressure limits is essential for maintaining operational safety and reliability in high-pressure boiler systems.