The upper bridle segment, lower bridle segment and deflector body define a geometry between themselves.

A top flange is affixed to tops of each of the shells, and a top lid is seated on the top flange.

In the top flange (2) are provided cutout portions (12) extending from the outer peripheral edge of the top flange to its center.

Five holes shall be drilled in the top flange at a distance of 40 mm from the top edge of the flange and five in the bottom flange, 40 mm from the bottom edge of that flange.

Five holes shall be drilled in the top flange at a distance of 40 mm from the top edge of the flange and five in the bottom flange, 40 mm from the bottom edge of that flange.

A top brace spans between the opposing sidewalls and is fixed to the top panel at an off-center portion.

An upper flange and a lower flange of the screen cylinder (5) are respectively located at an upper stopper of the portion (4) and an upper stopper on an inner ring of the lower housing (6).

Another flange (23) stands up from an inner edge of the top flange.

An upper flange assembly includes an upper body portion, a second rim portion extending around the upper body portion, and a second fluid passageway.

The top-flange protective cover is formed to cover the entire outer surface of the top flange when it is attached to the flange.

A metering system comprising an upper flange a meter valve, and a lower flange.

The upper bridle segment, lower bridle segment and deflector body define a geometry between themselves.

A top flange is affixed to tops of each of the shells, and a top lid is seated on the top flange.

The flange portion has a third diameter greater than the second diameter.

The diameter of the flange section is greater than that of the housing.