SynC · Topic
These are the standards in the SynC Standards library that cover Backflow Prevention. Each one is a complete, plain-language specification: the scope it applies to, the requirements that govern it, and a structured equipment datasheet listing the values a project has to decide — ratings, materials, setpoints, and the standards each is verified against. All of it is free to read without an account and published under CC BY-SA 4.0.
A standard usually carries several topics, so most of the entries below also appear under neighbouring subjects. The topics each one carries are listed on its own page.
Backflow prevention assemblies and cross-connection control for potable water systems in commercial, institutional, and industrial buildings. Covers the selection, installation, testing, certification, and freeze protection of reduced-pressure principle assemblies (RPZ/RPA), double-check valve assemblies (DCVA), pressure vacuum breakers (PVB), spill-resistant vacuum breakers (SVB), atmospheric vacuum breakers (AVB), and dual-check valves with intermediate atmospheric vent (DCAP), as well as fire-service detector check assemblies (DCDA-II and RPDA-II). Includes selection by degree of hazard and type of cross-connection, indirect-waste sizing for RPZ discharge, heated-enclosure requirements for outdoor installations, and annual certification by qualified testers.
Underground automatic landscape irrigation systems for commercial, institutional, and industrial sites, including the point of connection and backflow prevention, buried mainline and lateral piping, isolation and zone control valves and valve boxes, spray heads and gear-driven rotors with matched-precipitation-rate nozzles, drip and micro-irrigation and subsurface drip for planting beds, smart weather/ET-based and soil-moisture-based controllers, master valve and flow sensor, rain and freeze sensors, sleeving and boring under paving and hardscape, coverage and hydrozoning design principles, pressure and coverage testing, winterization, and as-built controller programming. Emphasizes water efficiency, EPA WaterSense criteria, and local water-purveyor and code requirements.