Acrylonitrile-Butadiene-Styrene a Rigid black plastic pipe used for drain, waste and vent lines.
- Access Panel
An Access Panel allows access to service areas for plumbing, electrical, sprinkler systems and more. They can be flush or surface mounted.
- Air Admittance Valve
One way valve designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system. The device shall close by gravity and seal the vent terminal at zero differential pressure (no flow conditions) and under positive internal pressures. The purpose of an air admittance valve is to provide a method of allowing air to enter the plumbing drainage system without the use of a vent extended to open air and to prevent sewer gases from escaping into a building.
- Air Break Drainage System
A piping arrangement in which a drain from a fixture, appliance or device discharges indirectly into another fixture, receptacle or interceptor at a point below the flood level rim and above the trap seal.
- Air Conditioning
The treatment of air so as to control simultaneously the temperature, humidity, cleanness and distribution of the air to meet the requirements of a conditioned space.
- Air Gap Drainage System
The unobstructed vertical distance through the free atmosphere between the outlet of the waste pipe and the flood level rim of the receptacle into which the waste pipe is discharging.
- Air Handling Unit
A blower or fan used for the purpose of distributing supply air to a room, space or area.
- Annual Fuel Utilization Efficiency
The ratio of annual output energy to annual input energy which includes any non-heating season pilot input loss, and for gas or oil fired furnace or boilers, does not include electrical energy.
- Anti siphon
A term applied to valves or mechanical devices that eliminate siphonage.
An apparatus or device that utilizes a fuel or raw material to produce light, heat, power, refrigeration or air conditioning.
- Appliance Shut Off Valve
A valve located in the piping system, used to isolate individual appliances for purposes such as service or replacement.
- Atmospheric Pressure
The pressure of the weight of air and water vapor on the surface of the earth, approximately 14.7 pounds per square inch (psi) (101 kPa absolute) at sea level.
- Automatic Gas Shutoff
A valve used in conjunction with an automatic gas shutoff device to shut off the gas supply to a water heating system.
Pressure created by any means in the water distribution system, which by being in excess of the pressure in the water supply mains causes a potential backflow condition.
- Barometric Draft Regulator
A balanced damper device attached to a chimney, vent connector, breeching or flue gas manifold to protect combustion appliances by controlling chimney draft. A double-acting barometric draft regulator is one whose balancing damper is free to move in either direction to protect combustion appliances from both excessive draft and backdraft.
- Bedpan Steamer or Boiler
A fixture utilized for scalding bedpans or urinals by direct application of steam or boiling water.
- Boiler Low Pressure
A self-contained appliance for supplying steam or hot water.
- Building Drain
That part of the lowest piping of a drainage system that receives the discharge from soil, waste and other drainage pipes inside and that extends 30 inches (762 MM) in developed length of pipe beyond the exterior walls of the building and conveys the drainage to the building sewer.
- Building Envelope
The elements of a building which enclosed conditioned spaces through which thermal energy is capable of being transferred to or from the exterior or to or from spaces exempt by the provisions in Section 101.2.1.
- Building Sewer
That part of the drainage system that extends from the end of the building drain and coveys the discharge to a public sewer, private sewer, individual sewage disposal system or other point of disposal.
- Building Trap
A device, fitting or assembly of fittings installed in the building drain to prevent circulation of air between the drainage system of the building and the building sewer.
A primarily vertical structure containing one or more flues, for the purpose of carrying gaseous products of combustion and air from an appliance to the outside atmosphere.
- Clothes Dryer
An appliance used to dry wet laundry by means of heated air.
- Coefficient of Performance (COP) Cooling
The ratio of the rate of heat removal to the rate of energy input in consistent units, for a complete (COP) cooling system or factory assembled equipment, as tested under a nationally recognized standard or designated operating conditions.
- Coefficient of Performance (COP) Heat Pump Heating
The ration of heat delivered to the rate of energy input, in consistent units, for a complete heat pump system under designated operating conditions. Supplemental heat shall not be considered when checking compliance with heat pump equipment.
- Combination Fixture
A fixture combing one sink and laundry tray or a two or three compartment sink and laundry tray in one unit.
- Combustible Products
Constituents resulting from the combustion of a fuel with the oxygen in the air, including inert gases, but excluding excess air.
- Common Vent
A vent connecting at the junction of two fixtures drains or to a fixture branch and serving as a vent or for both fixtures.
A specific machine, with or without accessories, for compressing a gas.
- Confined Space
A space having a volume less that 50 cubic feet per 1000 Btu/h of the aggregate input ratings of all appliances installed in that space.
- Construction Documents
All of the written, graphic and pictorial documents prepared or assembled for describing the design, locating and physical characteristics of the elements of the project necessary for obtaining a building permit. The construction drawing shall be drawn to an appropriate scale.
A manual or automatic device designed to regulate the gas, air, water or electrical supply to, or operation of, a mechanical system.
- Critical Level
An elevation (height) reference point that determines the minimum height at which a backflow preventer or vacuum breaker is installed above the flood level rim of the fixture or receptor served by the devices. The critical level is the elevation level below which there is a potential for backflow to occur. If the critical level marking is not indicated on the device, the bottom of the device shall constitute the critical level.
- Cross Connection
Any physical connection or arrangement between two otherwise separate piping systems, one of which contains potable water and the other either water of unknown or questionable safety or steam, gas or chemical, whereby there exists the possibility for flow from one system to the other, with the direction of flow depending on the pressure differential between the two systems.
- Cubic Foot
The amount of gas that occupies 1 cubic foot (0.02832 m3 ) when at a temperature of 60°F (16°C), saturated with water vapor and under a pressure equivalent to that of 30 inches of mercury (101 kPa).
- Degree Day Cooling
A unit based on temperature difference and time, used in estimating cooling energy consumption and specifying nominal cooling load of a building in summer.
- Draft Regulator
A device that functions to maintain a desired draft in the appliance by automatically reducing the draft to the desired value.
Any pipe that carries wastewater or water-borne wastes in a building drainage system.
- Drainage System
Piping within a public or private premise that conveys sewage, rainwater or other liquid wastes to a point of disposal. A drainage system does not include the mains of a public sewer system or a private or public sewage treatment or disposal plant.
- Duct System
A continuous passageway for the transmission of air that, in addition to ducts, includes duct fittings, dampers, plenums, fans and accessory air-handling equipment.
- Effective Opening
The minimum cross sectional area at the point of water supply discharge, measured or expressed in terms of the diameter or a circle or, if the opening is not circular, the diameter of a circle or equivalent cross sectional area. For faucets and similar fittings, the effective opening shall be measured at the smallest orifice in the fitting body or in the supply piping to the fitting.
- Energy Efficiency Ratio (EER)
The ratio of net equipment cooling capacity in British thermal units per hour (Btu/h) (W) to total rate of electric input in watts under designated operating conditions. When consistent units are used, this ration becomes equal to COP.
That part of the system in which liquid refrigerant is vaporized to produce refrigeration.
- Exhaust System
An assembly of connected ducts, plenums, fittings, registers, grilles and hoods through which air is conducted from the space or spaces and exhausted to the outdoor atmosphere.
A valve end of a water pipe through which water is drawn from or held within the pipe.
- Fill Valve
A water supply valve, opened or closed by means of a float or similar device, utilized to supply water to a tank. An antisiphon fill valve contains an antisiphon device in the form of an approved air gap or vacuum breaker that is an integral part of the fill valve unit and that is positioned on the discharge side of the water supply control valve.
A fire chamber and hearth constructed of noncombustible material for use with solid fuels and provided with a chimney.
- Fixture Supply
The water supply pipe connecting a fixture to a branch water supply pipe or directly to a main water supply pipe.
- Fuel Gas
A natural gas, manufactured gas, liquefied petroleum gas or mixtures of these gases.
- Fuel Oil
Kerosene or any hydrocarbon oil having a flash point not less than 100°F.
- Gas Piping
An installation of pipe, valves or fittings installed on a premise or in a building and utilized to convey fuel gas.
- Grease Interceptor
A plumbing appurtenance that is installed in a sanitary drainage system to intercept oily and greasy wastes from a wastewater discharge. Such device has the ability to intercept free floating fats and oils.
- Heat Pump
A refrigeration system that extracts heat from one substance and transfers it to another portion of the same substance or to a second substance at a higher temperature for a beneficial purpose.
- Hot Water Heating Boiler
A boiler in which no steam is generated, from which hot water is circulated for heating purposes and then returned to the boiler, and that operates at water pressures not exceeding 160 pounds per square inch gauge (psig) (1100 kPa gauge) and at water temperatures not exceeding 250°F (121°C) at or near the boiler outlet.
- HVAC System
HVAC system equipment provides in one or more factory assembled packages, means for air circulation, air cleaning, air cooling with controlled temperature and dehumidification’s and, optionally, either alone or in combination with a heating plant, the functions of heating and humidifying. The cooling function is either electrically or heat operated and the refrigerant condenser is air, water or evaporatively cooled. Where the equipment is proved in more than one package, the separated packages shall be designed by the manufacturer to be used together. The equipment shall be permitted to provide the heating function as a heat pump or by the use of electric or fossil fuel fired elements.
- HVAC System Components
HVAC system components provide, in one or more factory assembled packages, means for chilling or heating water or both, with controlled temperature for delivery to terminal units serving the conditions spaces of the building.
- Ignition Source
A flame, spark or heat surface capable of igniting flammable vapors or fumes. Such sources include appliance burners, burner igniters and electrical switching devices.
- Individual Main Burner
A valve that controls the gas supply to an individual main burner.
The uncontrolled inward air leakage through cracks and interstices in any building element around windows and doors of a building caused by the pressure effects of wind or the effect of differences in the indoor and outdoor air density or both.
A device designed and installed to separate and retain for removal, by automatic or manual means, deleterious, hazardous or undesirable matter from normal wastes, while permitting normal sewage or wastes to discharge into the drainage system by gravity.
- Limit Control
A device responsive to changes in pressure, temperature or level for turning on, shutting off or throttling the gas supply to an appliance.
- Main Burner Control
A valve that controls the gas supply to the main burner manifold.
- Manual Main Gas Control
A manually operated valve in the gas line for the purpose of completely turning on or shutting off the gas supply to the appliance, except to pilot or pilots that are provided with independent shutoff.
- Manual Reset
An automatic shutoff valve installed in the gas supply piping and set to shut off when unsafe conditions occur. The device remains closed until manually reopened.
Modulating or throttling is the action of a control from its maximum to minimum position in either predetermined steps or increments of movement as caused by its actuating medium.
The practice, materials and fixtures utilized in the installation, maintenance, extension and alteration of all piping, fixtures, plumbing appliances and plumbing appurtenances, within or adjacent to any structure, in connection with sanitary drainage or storm drainage facilities; venting systems; and public or private water supply systems.
- Plumbing Fixture
A receptacle or device that is either permanently or temporarily connected to the water distribution system of the premises and demands a supply of waste there from; discharges wastewater, liquid-borne waste materials or sewage either directly or indirectly to the drainage system of the premises; or requires both a water supply connection and a discharge to the drainage system of the premises.
- Potable Water
Water free from impurities present in amounts sufficient to cause disease or harmful physiological effects and conforming to the bacteriological and chemical quality requirements of the Public Health Service Drinking Water Standards or the regulations of the public health authority having jurisdiction.
- Reduced Pressure Principle Backflow Preventer
A backflow prevention device consisting of two independently acting check valves, internally force-loaded to a normally closed position and separated by an intermediate chamber or zone in which there is an automatic relief means of venting to the atmosphere, internally loaded to a normally open position between two tightly closing shutoff valves and with a means for testing for tightness of the checks and opening of the relief means.
A substance utilized to produce refrigeration by its expansion or vaporization.
- Refrigeration System Absorption
A heat operated, closed-refrigeration cycle in which a secondary fluid (the absorbent) absorbs a primary fluid (the refrigeration) that has been vaporized in the evaporator.
- Relief Valve Device
A safety valve designed to forestall the development of a dangerous condition by relieving either pressure, temperature or vacuum in the hot water supply system.
- Roof Drain
A drain installed to receive water collecting on the surface of a roof and to discharge such water into a leader or conductor.
- Service Shutoff Valve
A valve installed by the serving gas or water supplier between the service meter or source of supply and the customer piping system, to shut off the entire piping system.
- Stack Vent
The extension of a soil or waste stack above the highest horizontal drain connected to the stack.
- Steam Heating Boiler
A boiler in which steam is generated and that operates at a steam pressure not exceeding 15 psig (100 kPa gauge).
- Sump Pump
An automatic water pump powered by an electric motor for the removal of drainage, except raw sewage, from a sump, pit or low point.
- Swimming Pool
Any structure, basin, chamber or tank containing an artificial body of water for swimming, diving, or recreational bathing having a depth of 2 feet or more at any point.
- Tempered Water
Water having a temperature range between 85°F and 110°F.
- Thermostat Electric Switch
A device that senses changes in temperature and controls electrically, by means of separate components, the flow of gas to the burner(s) to maintain selected temperatures.
- Thermostat Integral Gas Valve
An automatic device, actuated by temperature changes, designed to control the gas supply to the burner(s) in order to maintain temperatures between predetermined limits, and in which the thermal actuating element is an integral part of the device.
- Unusually Tight Construction
Construction that meets the following; (a) Walls exposed to the outdoor atmosphere having a continuous water vapor retarded with a rating of 1 perm or less with openings gasket or sealed; (b) Openable windows and doors meeting the air leakage requirements of the International Energy Conservation Code; (c) Caulking or sealants are applied to areas, such as joints around window and door frames, between sole plates and floors, between wall ceiling joints, between wall panels, at penetrations for plumbing, electrical and gas lines and at other openings.
A device used in piping to control the gas supply to any section of a system of piping or to an appliance.
- Vent Piping Breather
Piping running from a pressure regulating device to the outdoors, designed to provide a reference to atmospheric pressure.
- Vent Piping Relief
Piping run from a pressure regulating or pressure limiting device to the outdoors, designed to provide for the safe venting of gas in the event of excessive pressure in the gas piping system.
- Water Heater
Any heating appliance or equipment that heats potable water and supplies such water to the portable hot water distribution system.
- Water Supply System
The water service pipe, water distribution pipes, and the necessary connecting pipes, fittings, control valves and all appurtenances in or adjacent to the structure or premises.
- Well: Bored
A bored well is constructed by boring a hole in the ground with an auger and installing a casing.
- Well: Drilled
A drilled well constructed by making a hole in the ground with a drilling machine or any type and installing casing and screen.
- Well: Driven
A well constructed by driving a pipe in the ground. The drive pipe is usually fitted with a well point and screen.
- Well: Dug
A well constructed by excavating a large diameter shaft and installing a casing.
- Whirlpool Bathtub
A plumbing appliance consisting of a bathtub fixture that is equipped and fitted with a circulating piping system designed to accept, circulate and discharge bathtub water upon each use.
A tool used to provide grip and mechanical advantage in applying torque to turn objects usually rotary fasteners, such as nuts and bolts or keep them from turning.