What is Johnson Screen

JX Filtration February 25, 2025 Wedge Wire Screen

The standard welded structure of Johnson Screen uses resistance welding to continuously rotate and connect the winding wire and supporting ribs, forming a continuous wedge-shaped mesh with open apertures as the wire is welded to the ribs. It can be made into various structural forms, including cylindrical, flat, arched, or other custom shapes.

The aperture size precision and welding strength of the screen are the two most important indicators for evaluating the quality of the mesh. Among the usual precision requirements, the aperture size precision is particularly critical.

In refineries and petrochemical plants, Johnson Screens are primarily used in catalytic reforming units for radial reactors' sectorial cylinders, central pipes, inner baskets, and outer baskets; typically in reactor inlet distributors, fouling baskets, support grids for catalyst beds, and outlet collectors. They are also used in filter pipes, centrifuge filter baskets, and vibrating screens.