Side Stream Filter Package - 3/4"FEATURES and BENEFITS Double O ring on filter housing for reliable leak free cartridge replacements Ball valve drain with hose connection and cap ensures safe fluid handling Buoyant TPX ball movement can be seen at low flow rates less than 1 gpm Comes with standard DOE 25 micron cotton wound filter cartridge (5 micron filters available) Two tempered borosilicate glass windows gives better fluid visibility Manual balance valve provides flow metering,