Cast iron water columns may be used for pressures up to how many psi?

Cast iron water columns are commonly used in steam systems for various applications, such as providing a means for water level indication in steam boilers. The ability of cast iron water columns to safely handle pressure is crucial for their proper function.

In this context, the correct answer indicates that cast iron water columns can safely operate at pressures up to 250 psi. This is a standard limit recognized in the industry, confirming the material's strength and durability under typical operating conditions in stationary steam applications. Understanding this limit is essential for steam engineers, as exceeding it could result in structural failure or safety hazards.

When utilizing cast iron for water columns, it is important to ensure that all components are rated properly for the pressure they will encounter. This knowledge helps maintain system integrity and operational safety. The specifications of the materials used dictate their appropriate applications and potential pressure ratings, which is crucial for effective steam system design and maintenance.