AG AVB PVB DCVA PA 1 Abattoir (slaughter house) 2 Air compressor oil cooler 3 Agricultural chemicals (sprayers 4 Animal watering 5 Apartment building (within the scope of Part 3 of the Ontario Building Code) 6 Aspirator (toxic) 7 Aspirator (non-toxic) 8 Autoclave 9 Automotive plant 10 Automotive repair shop 11 Autopsy and mortuary equipment 12 Baptistery 13 Basin 14 Bathtub (all) 15 Bedpan washer 16 Bidet 17 Bottle washer 18 Bottel washer below flood level rim 19 Beverage processing plant 20 Canopy washer 21 Car wash 22 Carbonator (note: DCAP to be stainless steel or plastic) 23 Chemical feed tank 24 Chemical plant 25 Chiller tank 26 Chlorinator 27 Clothes washer 28 Coffee machine 29 College 30 Commercial coin-operated laundry 31 Commercial laundry 32 Condensate tank (top feed) 33 Condensate tank (bottom feed) 34 Cooking kettle 35 Cooling condenser (solenoid upstream) 36 Cooling condenser (solenoid downstream) 37 Cooling tower 38 Deaerator (top feed) 39 Deaerator (bottom feed) 40 Degreasing equipment system 41 Deionized water 42 Dental Vacuum pump 43 Dental office
AG AVB PVB DCVA PA 44 Dental high speed hand piece and air and water syringe (note: source isolation not required) 45 Dental Cuspidor (with internal air gap) 46 Dental Cuspidor (no air gap) 47 Detergent dispenser 48 Dish rinse unit with flex hose 49 Dishwasher (commercial) 50 Distiller 51 Dockside marine facility 52 Dye plant 53 Emergency eyewash/shower Equipment must be installed upstream of the zone isolation 54 55 56 57 58 59 60 61 Fire Protection Systems Wet sprinkler system (note: requires listed alarm check valve) Wet stand pipe system (note: requires resilientseated check valve) Wet sprinkler or stand pipe system containing anti-freeze with listed alarm check valve (note: requires expansion tank/chamber) Wet sprinkler or stand pipe system containing anti-freeze without listed alarm check valve (note: requires expansion tank/chamber) Dry sprinkler or standpipe system (note: premise isolation not required) Fire hydrant (note: premise isolation not required) Fire Service main connected to more than one of the following different sources of supply: 1) Municipal water supply system 2) a private water supply system, or 3) a source of non-potable water GENERAL CONDITIONS 1) Antifreeze solutions must be water solutions of pure glycerin (C.P. or U.S.P., 96.5% grade) OR propylene glycol conforming to Section 3-5.2.1 of NFPA-13, 1994 Edition. These are best described as food-grade chemicals. 2) Antifreeze solutions must be tested to verify compliance with above conditions. Any other antifreeze solution is NOT permitted and must be replaced. 3) Expansion chambers shall be of an appropriate size to compensate for thermal expansion of antifreeze solution. 4) An adequate amount of piping before or after the location of any backflow prevention device shall be increased in size to compensate for the pressure loss created by the device being installed. The flows are to be in accordance with NFPA-13 for the appropriate hazard classification in the area downstream of the backflow prevention device. 62 Flexible shower head 63 Floor drain with flushing rim 64 Flush tank 65 Flushing equipment device 66 Flushometer 67 Food processing plant 68 Fountain, ornamental 69 Fountain, ornamental (chemical added) 70 Funeral Home 71 Garbage disposal unit 72 Garbage can washer 73 Heating System (copper/plastic, no chemicals) 74 Heating System (no chemicals added) 75 Heating System (chemicals added) 76 Hose bib 77 Hospital (non-treatment area) 78 Hospital (active treatment area) 79 Hot tub
AG AVB PVB DCVA PA 80 Humidifier 81 Humidifier with sump 82 Hydrotherapy bath 83 Industrial fluid system 84 Irrigation system (chemical injected) 85 Irrigation system (pop up head and underground soaker) 86 Irrigation system (no chemical added) 87 Lab bench equipment (toxic) 88 Lab bench equipment (non toxic) 89 Laboratory 90 Laboratory faucet 91 Laundry machine 92 Laundry tub faucet with hose bib connection 93 Lavatory 94 Lethal substance 95 Livestock equipment 96 Mall - multi-tenant 97 Manufacturing plant (not specified) 98 Meat packing plant 99 Milk processing plant 100 Mixing tee with steam and water 101 Mobile home park 102 Mop sink faucet with hose bib connection 103 Mortuary or morgue 104 Office building 105 Oil Refinery 106 Paint manufacturing plant 107 Penitentiary 108 Petroleum processing or storage facility 109 Photo lab sink 110 Pipette washer 111 Plant using radioactive material 112 Plastic manufacturing plant 113 Plating shop 114 Plating tank 115 Pleasure boat marina 116 Potato peeler 117 Pressure washer (no aspirator) 118 Pressure washer (with aspirator) 119 Printing plant 120 Pump primer line (toxic) 121 Pump primer line (non-toxic) 122 Radiator shop
AG AVB PVB DCVA PA 123 Refinery, petroleum processing 124 Research building 125 Residential premises - multi-tenant 126 Restricted area 127 Reverse osmosis (note: AG required at drain) 128 Reverse osmosis with chemical cleaning 129 School 130 Serrated faucet 131 Sewage treatment plant 132 Sewage ejector 133 Sewage pump 134 Shampoo sink 135 Shopping mall 136 Sizing vat 137 Solar energy unit 138 Solution tank 139 Specimen tank 140 Steam boiler plant 141 Steam table 142 Steam generator 143 Steam cleaner 144 Sterilizer (condensate cooling only) 145 Sterilizer (condensate into chamber) 146 Still (note: AG required at drain) 147 Storage warehouse 148 Swimming pool 149 Swimming pool (direct connection) 150 Swimming pool makeup tank 151 Technical Institute 152 Track-side facilities for trains 153 Trap primer (note: air gap fitting required) 154 University 155 Vegetable sprayer 156 Veterinary clinic 157 Veterinary clinic (special equipment) 158 Vending machine (with carbonator), (note: DCAP to be stainless steel or plastic) 159 Vending machine (with filter) 160 Water closet (tank type) (N/A if constructed after 1995) 161 Water closet (flushometer type) 162 Water hauling equipment (non-toxic) 163 Water hauling equipment (toxic) 164 Water softener, commercial (note: requires AG at drain) 165 -ray equipment
AG AVB PVB DCVA PA Definitions: Premise Isolation Source Isolation Zone Isolation Minor Hazard Moderate Hazard Severe Hazard means isolation of the water located within a building or structure from the Municipality's water supply means isolation of the water located within or having flowed through a source or potential source of contamination within a building or structure including a device, machine, water system or the like, from any potable water system means the isolation of the water located within an area of a building or structure from any potable water system located within such building or structure means any cross-connection or potential cross-connection that constitutes only a nuisance, with no possibility of any health hazard means any minor hazard that has a low probability of becoming a severe hazard means any cross-connection or potential cross-connection involving any substance that could be a danger to health Abbreviations: AG DCVA DCAP PA AVB HCVB LFVB Air Gap means the unobstructed vertical distance through air between the lowest point of the water supply outlet and the flood level rim of the fixture or device into which the outlet discharges. There shall be a minimum physical separation of at least two pipe diameters between the public supply pipe and the private system. Double Check Valve Assembly means a backflow prevention device consisting of two force-loaded, independently acting check valves, including tightly closing resilient-seated shutoff valves located at each end of the assembly and fitted with properly located resilient-seated test cocks. This device is designed for use under continuous pressure. Dual Check Valve with Atmospheric Port means a backflow prevention device that consists of two independently acting check valves separated by an intermediate chamber with an atmospherice port. A chamber pressure higher than the supply pressure is required to open the port when there is a positive pressure on the supply side. This device is designed for use under continuous pressure. Reduced Pressure Principle Assembly means a backflow prevention device that consists of a mechanically independently acting, hydraulically dependent relief valve located in a chamber between two independently operating, force-loaded check valves, the intermediate chamber pressure always being lower than the supply pressure when there is a positive pressure on the supply side. The unit includes properly located resilient-seated test cocks and tightly closing resilient-seated shutoff valves at each end of the assembly. This device is designed for use under continuous pressure. Atmospheric Vacuum Breaker means a device that will prevent backflow when pressure in the system upstream of the device falls below atmospheric pressure and in which air is only admitted downstream of the device and which is designed to be under pressure only when water is being drawn from the system and for short, intermittent periods of time. Hose Connection Vacuum Breaker means a device that will prevent backflow when pressure in the system upstream of the device falls below atmospheric pressure and in which air is only admitted downstream of the device and which consists of a single force-loaded check valve biased to a normally closed position. Downstream of the check valve is a means of automatically venting to atmosphere that is force-loaded or biased to a normally open position. If there is no flow through the device, the check valve is closed and the vent is open. The device is designed to be under pressure only when water is being drawn from the system and for short, intermittent periods of time. Laboratory Faucet Vacuum Breaker means a device that will prevent backflow when pressure in the system upstream of the device falls below atmospheric pressure and in which air is only admitted downstream of the device and which consists of two independently acting check valves force-loaded or biased to a normally closed position. Between the check valves there is a relief port that is force-loaded or biased to a normally open position. When the laboratory faucet is off, the check valves are closed and the port is open. When the faucet is on, the check valves are open and the port is closed. PVB Pressure Vacuum Breaker means an assembly containing an independently acting check valve force-loaded or biased to a normally closed position, and an independently operating air inlet valve force-loaded or biased to a normally open position and located on the discharge side of the check valve. The assembly is equipped with properly located resilient-seated test cocks and tightly closing resilient-seated shutoff valves located at each end of the assembly. The device is designed for use under continuous pressure.