Self-Cleaning Duplex Filter

摘要

A duplex fluid filter assembly allows extended life between filter replacements, by automatically back-flushing one filter unit with clean fluid from another filter unit of the duplex assembly.

主权项

1. A filter unit comprising:
a housing; a horizontal tube plate within the housing, separating the housing into upper and lower portions; at least one port in the tube plate, with a respective at least one connector for a respective at least one filter cartridge to be mounted in the housing upper portion; a fluid outlet below the tube plate and mounted within the housing lower portion, the at least one port communicating with the fluid outlet; a fluid inlet into the housing upper portion; at least one passage between the housing upper portion and the housing lower portion; and a drain communicating with the housing lower portion.