Rotor impeller assembly

Roving bar screen

Run-off water filter for storm drains

Runoff drain filter with separately removable cartridges

Safety device for open receptacle

Safety device for sealing a drain assembly

Sand trap and flow controller mechanism for a bathtub

Sani drain

Sanitary floor drain

Sanitary, storm and catch basin trap with filter insert

Sanitary, storm and catch basin trap with filter insert

Sanitation barrier for oil/grease separator in a kitchen

Scraper arm for rake screen

Screen

Screen comprising a travelling endless screening band

Screen scraper for trash racks

Screened gravity-fed funnel

Screening apparatus

Screening apparatus for removing coarse material from fluids inc

Screening apparatus for sewage