The SFD series high-pressure and ultra-high-pressure two-color water level gauges are suitable for liquid level monitoring in steam boilers, pressure vessels, and pipeline water levels with a nominal pressure of less than or equal to 32MPa. Developed based on over twenty years of experience in manufacturing water level gauges at our company and incorporating the advantages of domestic and international two-color water level gauges, they offer benefits such as no or minimal blind spots, effective self-cleaning, clear display, easy maintenance, and high safety and reliability. They are currently the most ideal instruments for monitoring boiler steam bubble water levels.