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Backflow Prevention Assembly Tester Training Salmonellosis - {Y4{%-A disease caused by pathogenic bacterica (often associated with chicken), which affects the intestinal tract. The primary symptom is severe diarrhea. A valve designed to open in the direction of normal flow and close with the reversal of flow. - (Y4{%-Check valve Overflow level - [Y4{%-The maximum height that water or liquid will rise in a receptacle before it flows over the rim. Backflow - {Y4{%4-A hydraulic condition, caused by a difference in pressures, in which non-potable water or other fluids flow into a potable water system. RPBP - {Y{/-A shortened name for a reduced pressure backflow preventer Air Gap - {Y4{4-In plumbing, the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or outlet supplying water to a tank, plumbing fixture, or other container, and the overflow rim of that container potential cross connection - {74(VJ-Any arrangements of pipes, fittings, or devices that indirectly connects a potable water supply to a non-potable source Dysentery - {Y4{%-A disease (sometime waterborne) caused by pathogenic microorganisms and characterized by severe diarrhea with passage of mucus and blood Backsiphonage - {74{Y4-A backflow condition in which the pressure in the distribution system is less than atmospheric pressure (subatmospheric) Hose bib - {74{%-A faucet to which a hose may be attached Carrier - (74{YJ-A human or animal that carries germs and can pass them to another person without getting the disease himself. Reduced pressure zone backflow preventer - {Y4{74-A mechanical device consisting of two independnetly operating, spring-loaded check valves with a reduced pressure zone between check valves. Auxiliary supply - {Y4{%4-Any water source or system, other than the potable water supply, that may be available in the building or premesis. Actual Cross Connection - {Y4{%J-Any arrangement of pipes, fittings, that connects a potable water supply directly to a non-potable source at all times. Hepatitis - {74{%J-An inflammation of the liver caused by a pathogenic virus. Symptoms are jaundice, general weakness, nausea, and the presence of dark urine. Feed water - {74{74-Water that is added to a commercial or industrial system and subsequently used by the system, such as water that is fed to a boiler to produce steam. Pressure vacuum breaker - {Y4{7J-A device designed to prevent backsiphonsge, consisting of one independently operating spring-loaded check valve and an independently operating spring-loaded air-inlet valve. Bypass - [74{/J-In cross-connection control, any pipe arrangement that passes water around a protective device, causing it to be ineffective. Gastroenteritis - (Y4{J-An intestinal disease caused by pathogenic microorganisms, which involves inflammation of the stomach and intestines. Symptoms are diarrhea, pain, and nausea. Back pressure - [Y4{%J-A backflow condition in which a pump, elevated tank, boiler or other means results in a downstream pressure greater than the supply pressure Incubation period - {Y4{%4-The time period that elapses between the time a person is exposed to some disease and the time that person shows the first sign of symptom of the disease. Cross connection - {Y4{%-Any arrangement of pipes, fitting, fixtures, or devices that connects a non potable system to a potable water system Area - {4{Y4-Measures the surface of an object Area - (YA{Y-Tells how big something is Area - (A{%-Measures in square inches (in2) Pressure - {¥4{YJ-Force applies uniformly across a surface Pressure - {74(V-=force/area Pressure - {Y4{%4-Tells how much weight over how big a surface area Pressure - {74{YJ-Measured in Ibs/in2 (psi) Atmospheric Pressure - [Y4{¥4-The amount of pressure exerted by the atmosphere above the earth 14.7 PSI - (YA{V-Atmospheric Pressure at sea level Vacuum - {Y4{%4-Pressure is less than atmospheric Vacuum - {Y4(¥4-Gage pressure is negative Vacuum - {Y4{%4-0 PSIA or -14.7 PSIG 7.48 gallons - {Y4{Y4-1 ft3 of water 8.34 Ibs - [YA{%J-1 gallon of water 62.4 - (YJ[V-(7.48 gal/ft3)(8.34lbs/gal) 0.433 - [Y4{-For every one foot of water you generate how much PSI? 2.31 ft - [YAl-1.0 PSIG Feet of head - {YJ {%J-=(psi)(2.31 ft/psi) 2.31 feet - [YA{YA-27 3/4 inches 20 psi - [4/%4-Minimum system pressure 35 psi - [Y4{/-Minimum static pressure 60 psi - {Y4{/-Average working pressure 100 psi - [74{74-Maximumun pressure delivered to customers 33.9 feet - [Y74f/J-Only pertains to suction/vacuum. Absolute furthest water can be pulled up a column under a complete and total vacuum/siphonage Barometric Loop - (Y4{%-Only for backsiphonage protection. Cannot protect for backpressure. Backlfow - {74{%-Undesirable reversal of flow of water or other substances into the potable water distribution supply. Back pressure - (Y4{%J-Pressure in downstream piping greater than supply pressure Backsiphonage - {¥4{%4-Sub atmospheric pressure in the water system. Cross connection - {Y4{%-An actual or potential connection between a potable water supply and any non-potable substance. Direct cross connection - {74{74-Subject backpressure or backsiphonage Indirect cross connection - {Y4{%4-Subject to backsiphonage only Pollutant - {74{%J-Non-health hazard (does not cause illness or death) Contaminant - (74{%-Health hazard (can cause illness or death) 27 3/4 - (VAYA-2.31 feet of head Backflow - {¥4{%-The undesirable reversal of flow of water or other substances into the potable water distribution supply. Backpressure and backsiphonage - [74{V4-Backflow occurs because of what two things Proper installation for DC and RP - [Y4{YJ-Minimum 12" above grade, maximum 36" above grade, accessibility for testing and repair, and weather/vandalism protection (if needed) with adequate drainage. Proper installation for DC and RP - {Y4{%-Double check valve assemblies and reduce pressure backflow preventers should be installed vertically, if they have been specifically approved for vertical orientation. Pressure Vacuum Breaker (PVB) - [74{74-Must be installed 12" above grade Pressure Vacuum Breaker (PVB) - {Y4{%4-Does not protect against backpressure, but will protect against backsiphonage, contaminants, and pollutants. Atmospheric Vacuum Breaker (AVB) - {Y4{4-Does not protect against backpressure, but will protect against backsiphonage, contaminants, and pollutants. Atmospheric Vacuum Breaker (AVB) - {Y4{%4-Must be 6" above grade and has intermittent (non-continuous use) Indirect or direct - [Y4{%4-What kind of Cross connection is it? Pollutant or contaminant - {74{%4-What is the degree of hazard? Water supply protection - {74{%-The supply line and fittings for every plumbing fixture shall be protected so as to prevent backflow. Dual Check valve type backflow preventer - [74{%J-Non testable Barometric Loop - {¥4{/4-Shall proceed the point of connection and shall extend vertically to a height of 35 feet. This shall only be utilized as an atmospheric-type or pressure-type vacuum breaker. Backflow test gages - {7/{%/-Include three detachable color coded hoses. High pressure: red Low pressure: green or blue Bypsss/vent: typically black or yellow Backflow test gages - [7/["4-They are tested periodically (minimum of annually) using pressure differential gages. Backflow test gages - [7/{74-Should be looked at a minimum of annually. Local administrators will require and annual inspection and a copy of the certification and paperwork. Kit supposed to be accurate within + - 0.2 PSID at several different readings. Air Gap - (YA{Y-A physical seperation between the free flowing discharge end of a potable water supply pipeline and the highest flood level of an open or non-pressure receiving vessel. Air Gap - (Y4{4-Requires a minimum vertical air space 2 pipe diameters above the flood rim. Requires a minimum 1 in. Distance. Air Gap - {Y{%-Testing requirements: it does not require "testing" as the other devices. But it should be inspected to make sure it has not been nullified with objects such as hoses or pipes. 4 preliminary steps to testing - (YA{Y-Notify, identify, inspect, or observe. Relief valve - {Y4{%4-Must open at 2 PSID Relief valve check valve 1 - (Y4{%-Hold relief +3 PSID Relief valve check valve 2 - (Y4{/-Must hold against back pressure Relief valve check valve 2 - {Y4[Y-If tested must hold 1 PSID Reduced Pressure Backflow Preventer - [¥4{74-An assembly containing two independently acting approved check valves together with a hydraulically operating, mechanically independent pressure differential relief valve located between the check valves and at the same time below the first check valve. Reduced Pressure Backflow Preventer - {7/{/-Installed 12-36" above grade Seating with flow - {Y4{%-Usually indicates whether the valve closes under normal conditions Differential (PSID) - (YA{Y-A component of test # 2 Differential (PSID) - (Y4{%-Evaluation of how well the valve closes - how strong the spring is - how easliy the valve moves in the guide Pass - [Y4(J-Valves holding backpressure Fail - (Y4{%-Valve leaking under backpressure Fail - {4{%-Valve leaking under normal flow 1 PSID - {Y4{J-Minimum standards for passing check valve Expansion tank - {Y4{/4-A means of controlling increased pressure on a household Dual check - {74{%-Non testable and located behind meter 4,3,2,1 - (A{Y-Flush test cocks in this sequence Double Check Valve Backflow Prevention Assembly (DC) - [Y4{%4-Check valve 1 and. 2 must hold at 1 PSID or higher Double Check Valve Backlfow Preventer - [74{74-An assembly composed of two independently acting, approved check valves, including tightly closing resilient sealed shutoff valves attached at each end of the assembly and fitted properly located resilient seated test cocks. Double Check Valve Backlfow Preventer - {74{74-Must be installed 12-36" above grade Double Check Valve Backlfow Preventer - [74{"J-Adequate clearance above the sides of the unit for operation or repair must be 12" on the backside and 24" on the testcock side. Double Check Valve Backlfow Preventer - {74{%-Horizontal position unless approved for vertical installations Double Check Valve Backlfow Preventer - [7/{/4-Resilient seated shutoff valves, resilient seated testcocks provided for field testing, protective enclosure provided if needed, and proper drainage for all enclosures. Double Check Valve Backlfow Preventer - [Y4{4-Will protect against backpressure, backsiphonage, and pollutants. Will not protect against contaminants. Double Check Valve Backlfow Preventer - {7/{/4-Must be tested upon instillation, cleansed or repaired, and at least annually. Atmospheric Vacuum Breaker - {74{"4-Must be installed 6" above the highest downstream point. Atmospheric Vacuum Breaker - (V4{%4-Installed for backsiphonage only Atmospheric Vacuum Breaker - (Y4{%J-Has a floating check valve Atmospheric Vacuum Breaker - {74{%4-An assembly containing an air inlet valve, a Check seat, and an air inlet port. The flow of water into the unit causes the air inlet valve to close the air inlet port. When the flow of water stops the air inlet valve falls and forms a check valve against backsiphonage. Atmospheric Vacuum Breaker - {74{%-Installed a minimum of 6' clearance above the over flow rim (highest downstream point). Atmospheric Vacuum Breaker - {74{%4-Mounted in the vertical upright position Atmospheric Vacuum Breaker - (Y4{%-Has no downstream shutoff Atmospheric Vacuum Breaker - (V4{¥J-All water use downstream should be considered non-potable Atmospheric Vacuum Breaker - {74{%4-No downstream pumps Atmospheric Vacuum Breaker - (Y4{%-Canopy should be in place while the unit is in operation Pressure Vacuum Breaker - (74{¥4-Protects against backsiphonage, low hazard and high hazard only. Spill Resistant Pressure Vacuum Breaker - (Y4{/4-This assembly has one test cock. Pressure Vacuum Breaker - [74{¥4-The #1 test cock is located after the #1 shut off. Pressure Vacuum Breaker - (74{4-Must be installed 12" above the highest downstream point. 
