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The components of this model name typically represent the following meanings (based on common naming conventions):

B74G: Series number, indicating a large filter/pressure regulator with a G3/4 connection size;
6GK: Function code, denoting a filter-regulator combination with automatic drain;
AD3: Version or configuration code;
RMN: Outlet thread type (e.g., Rc 1/8).
Integrated Design: Combines filtration and pressure reduction into one unit, simplifying piping layout.
Automatic Drainage: Equipped with an automatic drain valve that periodically removes condensate from the filter bowl, reducing manual maintenance.
Modular Installation: Uti