This protocol covers gutters, barrier materials and/or catchment surfaces (coatings, paints and liners) placed on rooftops and ground surfaces that come into direct contact with rainwater that is collected for drinking
Backflow Preventer and Automatic Boiler or Chiller Filling Device with Pressure Regulating Managemen...
The scope of LEC 2009 covers direct-type boiler and chiller fill valve assemblies with integral backflow preventer and system pressure regulator that are used to control the inflow of water into heating and cooling systems to ensure sufficient system pressure. These devices protect the potable water supply against backflow due to backpressure and backsiphonage
