The Asse 1022 Dual Check Valve is a space-saving, code-aware solution for potable water backflow protection. It helps prevent contaminants and corrosive substances, such as carbonic acid, from entering drinking water. Using an approved device helps preserve potable supplies while supporting compliance with local and national plumbing requirements. Asse 1013 Manufacturers such as Watts produce backflow preventers that meet ASSE …
A Homeowner Quick Guide to Understanding the Asse 1022 Plumbing Code








