Backflow Preventer Basics
About this video: Backflow preventers are addressed in Section 6.5.7 Plumbing of the ComSOP. It states that inspectors should verify the presence of a back-flow prevention device if, in the…
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Building Trap Basics
About this video: A building trap at a commercial building is a plumbing device installed to prevent sewer gasses from entering the building’s interior. It typically consists of a U-shaped…
Commercial Property Plumbing Inspection at InterNACHI’s Pennsylvania House of Horrors®
About This Video: Follow Rob Claus, CMI®, as he performs a commercial property plumbing inspection at InterNACHI’s Pennsylvania House of Horrors®. He starts the inspection at the backflow preventer and…