What materials are generally used for expansion vessels in hot water systems?

Expansion vessels in hot water systems are typically made from materials that can withstand high pressures and temperatures while also being resistant to corrosion and other forms of wear over time. Steel is commonly used due to its strength and longevity, providing a durable option for the vessel's construction. Reinforced plastic can also be an excellent choice as it offers a lightweight alternative that can still maintain the necessary strength and pressure resistance.

The combination of steel and reinforced plastic allows for efficient thermal expansion management in a hot water system, ensuring that any excess pressure caused by heated water can be contained safely. This is crucial for maintaining the integrity of the system and preventing potential failures or leaks. These materials are specifically chosen to meet the demanding requirements of operating environments found in hot water systems, reflecting a balance between durability and performance.