Abstract: A filter assembly has a one-piece cast metal pressure vessel with an inlet port communicating only with an inlet chamber and an integral offset bulkhead forming a separate filtrate chamber on the opposite side of the bulkhead having an upper exit port and lower exit port on opposite sides of the filtrate chamber. A filter assembly is disposed through an aperture in the bulkhead with the filter inlet side communicating only with the inlet chamber and the filter outlet side communicating only with the filtrate chamber. An access opening is provided in the top of the pressure vessel with a lid for changing filters. A closure member attached over the lower exit port configures the assembly for simplex operation. Relocating the closure member to cover the upper exit port on a pair of the pressure vessels with filters therein readily configures the pair for attachment to opposite sides of a central diverter valve for duplex filtering operation without rework of either of the pair of pressure vessels.

Abstract: A filter assembly has a one-piece cast metal pressure vessel with an inlet port communicating only with an inlet chamber and an integral offset bulkhead forming a separate filtrate chamber on the opposite side of the bulkhead having an upper exit port and lower exit port on opposite sides of the filtrate chamber. A filter assembly is disposed through an aperture in the bulkhead with the filter inlet side communicating only with the inlet chamber and the filter outlet side communicating only with the filtrate chamber. An access opening is provided in the top of the pressure vessel with a lid for changing filters. A closure member attached over the lower exit port configures the assembly for simplex operation. Relocating the closure member to cover the upper exit port on a pair of the pressure vessels with filters therein readily configures the pair for attachment to opposite sides of a central diverter valve for duplex filtering operation without rework of either of the pair of pressure vessels.

Abstract: A reactor for UV sterilization having an array of UV-C tubes in a pressure vessel with an inlet at one end of the tubes and an outlet at the opposite end. An orifice plate baffle is disposed between the inlet and the proximate end of the UV tubes. Diffusers may be disposed about the UV tubes in the form of lobed rods or a strip having helically spiraled or twisted surfaces.