Which type of gauge glasses are used on boilers with pressures exceeding 250 psi?

The use of flat gauge glasses in boilers with pressures exceeding 250 psi is essential for maintaining both safety and accuracy in steam system operations. Flat gauge glasses are designed to withstand higher pressures without compromising visibility or integrity. Their construction ensures that they can handle the stress and strain caused by high-temperature and high-pressure steam environments.

In high-pressure settings, it is critical to have a reliable and durable means of monitoring water levels within the boiler, as this directly impacts the safety and functioning of the system. Flat gauge glasses meet these needs by providing a clear line of sight to the water level while being robust enough to withstand the necessary pressures.

Other types of gauge glasses, such as curved or transparent gauge glasses, may not provide the same level of safety or reliability at high pressures. Curved gauge glasses, for example, may not be as effective in high-stress situations, while transparent glasses may lack the required durability. Protected gauge glasses are designed for additional safety but are typically not the primary choice for extreme pressure scenarios like those exceeding 250 psi. Therefore, flat gauge glasses are the most suitable option for boilers operating under these conditions.