The Dual Check (DUC) is a non-testable backflow prevention device designed for low-hazard residential water system containment under continuous pressure. It features a lead-free cast copper body, two replaceable plastic check valves, and stainless steel springs for reliable performance.
Installed immediately downstream of a residential water meter—typically in a horizontal orientation—the DUC includes a meter connection nut (MCN) at the inlet, allowing it to thread directly onto the outlet of the meter. This configuration eliminates one connection in a standard meter setting.
Evans Supply Limited distributes hundreds of specialty waterworks items throughout the province each and every day. We source products from manufacturers situated all over North America and make them readily available to our water and wastewater utility customers. Whether you require a product or tool in the water treatment plant, sewage treatment plant or out in the distribution system we can supply it regardless of how obscure it is.
Evans Supply Limited distributes hundreds of specialty waterworks items throughout the province each and every day. We source products from manufacturers situated all over North America and make them readily available to our water and wastewater utility customers. Whether you require a product or tool in the water treatment plant, sewage treatment plant or out in the distribution system we can supply it regardless of how obscure it is.
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