Another video on backwater valves from a TikTok動画保存 (ロゴなし MP4) - TokVibe - Download TikTok Video No Watermark & MP3

ウォーターマーク（ロゴ）なしで Another video on backwater valves from a home inspection. Th のTikTok動画をフルHD MP4保存できます。

Another video on backwater valves from a home inspection. These prevent sewer backups. But because they require a penetration of the basement floor, they need to be properly sealed to prevent soil gas infiltration, like radon. Unfortunately they are almost never sealed properly. Often the lid is caulked or slopped over with concrete. They need to be openable in order to service and inspect. If you have one of these in your house, tell your insurance company. They may offer you a premium discount. Take what you can get! #plumbing #homeinspection #realestate

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