The Mainline full-port backwater valve features a patented normally open gate that allows sewer gases to vent freely while providing reliable protection against backflow. Designed for installation in basements, crawl spaces, and other accessible service areas, it’s a proven solution with over 20 years of use across North America.
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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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