than the supply pressure, the system being above atmospheric pressure. (See also Double Check Valve Assembly, Double Check Valve with Intermediate Atmospheric Vent, and Reduced Pressure Principle Backflow Presenter). BACKFLOW PREVENTER - a device to prevent backflow. As there are two conditions of backflow, the device should be identified by the conditions which it is designed to prevent. (See Back-Pressure Backflow Presenter, Reduced Pressure Principle Backflow Preventer, Back-Siphonage Backflow Preventer). BACK-SIPHOHAGE BACKFLOW - a reversal of the normal direction of flow in the pipeline due to a negative pressure (vacuum) being created in the supply line with the backflow source subject to atmospheric pressure. BACK-SIPHONAGE BACKFLOW PREVENTER, GENERAL - a device or combination of devices for preventing back-siphonage backflow in a water supply line. BAROMETRIC LOOP - a fabricated piping arrangement rising at least thirty- five (35) feet at its topmost point above the highest fixture it supplies. It is utilized in water supply systems to protect against back-siphonage. BY-PASS - any system of piping or other arrangement whereby the water may be diverted around any part or portion of a water supply or treatment facility including, but not limited to, around an installed backflow preventer. COMMERCIAL DISHWASHER - a mechanical that is used in other ‹dishwasher than domestic applications. CONTAINMENT - a method of backflow prevention which requires a backflow prevention device or method on the water service pipe to isolate the customer from the water main. CONTAMINATION - the introduction into of microorganisms, chemicals, toxic substances, wastes or wastewater that makes the water unfit for its intended use. CROSS CONNECTION - any connection or arrangement by means of which contaminant of any kind can be caused to enter the potable water supply system. DEGREE OF HAZARD - the term is derived from an evaluation of the potential risk to public health and the adverse effect of the hazard upon the potable water. 151 1999 Louisiana Amendments io the f994 Standar:I Plumbing Codas
than the supply pressure, the system being above atmospheric pressure. (See also Double Check Valve Assembly, Double Check Valve with Intermediate Atmospheric Vent, and Reduced Pressure Principle Backflow Presenter). BACKFLOW PREVENTER - a device to prevent backflow. As there are two conditions of backflow, the device should be identified by the conditions which it is designed to prevent. (See Back-Pressure Backflow Presenter, Reduced Pressure Principle Backflow Preventer, Back-Siphonage Backflow Preventer). BACK-SIPHOHAGE BACKFLOW - a reversal of the normal direction of flow in the pipeline due to a negative pressure (vacuum) being created in the supply line with the backflow source subject to atmospheric pressure. BACK-SIPHONAGE BACKFLOW PREVENTER, GENERAL - a device or combination of devices for preventing back-siphonage backflow in a water supply line. BAROMETRIC LOOP - a fabricated piping arrangement rising at least thirty- five (35) feet at its topmost point above the highest fixture it supplies. It is utilized in water supply systems to protect against back-siphonage. BY-PASS - any system of piping or other arrangement whereby the water may be diverted around any part or portion of a water supply or treatment facility including, but not limited to, around an installed backflow preventer. COMMERCIAL DISHWASHER - a mechanical ‹dishwasher that is used in other than domestic applications. CONTAINMENT - a method of backflow prevention which requires a backflow prevention device or method on the water service pipe to isolate the customer from the water main. CONTAMINATION - the introduction into of microorganisms, chemicals, toxic substances, wastes or wastewater that makes the water unfit for its intended use. CROSS CONNECTION - any connection or arrangement by means of which contaminant of any kind can be caused to enter the potable water supply system. DEGREE OF HAZARD - the term is derived from an evaluation of the potential risk to public health and the adverse effect of the hazard upon the potable water. 1999 Louisiana Amendments io the f994 Standar:I Plumbing Codas 151
wPLUMBING_DOCUMENT_FOR_OWNER_PACKET_.docx