What is the primary advantage of using a cast iron boiler for low pressure heating service?

The primary advantage of using a cast iron boiler for low pressure heating service lies in its long service life and durability, which is significantly attributed to its corrosion resistance. Cast iron possesses a natural ability to withstand the effects of corrosive elements that may be present in the water, such as oxygen or various minerals. This resistance to corrosion allows cast iron boilers to maintain their structural integrity over time, resulting in a longer operational lifespan compared to other materials that may degrade more quickly.

This longevity means that cast iron boilers can be a more cost-effective option in the long run, despite potentially higher initial installation costs, as they require less frequent replacement or extensive maintenance. Their design and material qualities make them particularly well-suited for low-pressure heating applications, providing reliable and efficient service over many years.