![HLZC-Pieces Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue) - Amazon.com HLZC-Pieces Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue) - Amazon.com](https://m.media-amazon.com/images/I/61HyIDV3eIS.jpg)
HLZC-Pieces Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue) - Amazon.com
![Hey pros! Our new cafe has this 3 compartment sink with an air gap that dumps into a grease trap. When we drain the sinks, this over flows. Previous tenant used a Hey pros! Our new cafe has this 3 compartment sink with an air gap that dumps into a grease trap. When we drain the sinks, this over flows. Previous tenant used a](https://preview.redd.it/hey-pros-our-new-cafe-has-this-3-compartment-sink-with-an-v0-na1bxib1gbc91.jpg?width=4032&format=pjpg&auto=webp&s=7d0b59ba809726e6bb2f4791aa2ef67848f64db7)
Hey pros! Our new cafe has this 3 compartment sink with an air gap that dumps into a grease trap. When we drain the sinks, this over flows. Previous tenant used a
![Sentinel Drain Guard Sewage Backflow Preventer 3 in. and 4 in. Backwater Valve - Holmes Approved DG100 - The Home Depot Sentinel Drain Guard Sewage Backflow Preventer 3 in. and 4 in. Backwater Valve - Holmes Approved DG100 - The Home Depot](https://images.thdstatic.com/productImages/02fe2dcd-2713-4598-b7ff-a05d94aec27b/svn/sentinel-backflow-preventers-dg100-64_600.jpg)
Sentinel Drain Guard Sewage Backflow Preventer 3 in. and 4 in. Backwater Valve - Holmes Approved DG100 - The Home Depot
![The Ebb and Flow of Plumbing and Backflow, Cody Barber of Maricopa County Environmental Services - YouTube The Ebb and Flow of Plumbing and Backflow, Cody Barber of Maricopa County Environmental Services - YouTube](https://i.ytimg.com/vi/3LTlnBtqaJ0/hqdefault.jpg)
The Ebb and Flow of Plumbing and Backflow, Cody Barber of Maricopa County Environmental Services - YouTube
![Amazon.com: Sentinel Drain Guard Sewer Backflow Preventer 3" and 4" Backwater Valve - Holmes Approved : Everything Else Amazon.com: Sentinel Drain Guard Sewer Backflow Preventer 3" and 4" Backwater Valve - Holmes Approved : Everything Else](https://m.media-amazon.com/images/I/71O5zPxaMiL.jpg)
Amazon.com: Sentinel Drain Guard Sewer Backflow Preventer 3" and 4" Backwater Valve - Holmes Approved : Everything Else
![Floor Drain Pipe Preventer Connector Multi-Layer Sealing Circle High-quality Silicone Material Double Drainage for Dishes Basins Mop Pools - Walmart.com Floor Drain Pipe Preventer Connector Multi-Layer Sealing Circle High-quality Silicone Material Double Drainage for Dishes Basins Mop Pools - Walmart.com](https://i5.walmartimages.com/asr/ff31045d-83ef-4418-bf50-7def9e027e1b.7ff794a7ca78513e96cebee220b14c23.jpeg)