David™ DBT4 Inverted Bucket Steam Trap with Built-In Strainer - High Efficiency Steam Control for Industrial Boilers & HVAC Systems

David™ DBT4 is an extremely robust inverted bucket steam trap with a simple operation controlled by the difference in density of steam and water. The principle of its reliability comes from the simple design using a free-floating valve lever mechanism that opens the valve against the steam pressure. 

Built-in strainer to prevent obstructions from dirt or debris coming through the line and preventing from working properly. It can be serviced without removing it from the steam  line.