Glossary

ALL A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A
ABS Acrylonitrile butadiene styrene, or ABS, is a common thermoplastic used to make light, rigid, molded products such as pipe, valves and fittings. In North American plumbing systems, ABS pipes are black in color and are used for drain, waste and vent (DWV) systems. Find ABS products.
Acetylene A highly flammable gas used in metal welding and as an illuminant. Find Acetylene products.
Administrative Authority The official board, department, or agency established and authorized by a state, country, city or other political subdivision created by law to administer and enforce the provisions of the plumbing code as adopted or amended. Find Administrative Authority products.
AFUE Annual Fuel Utilization Efficiency - an estimate of annual fuel usage for a typical house under average conditions, based on computerized procedures required by the U.S. Department of Energy from manufacturers' certified tests of specific models of heating units. Find AFUE products.
AGA The American Gas Association, or AGA, was founded in 1918. It represents 200 local energy utility companies that deliver natural gas to more than 64 million homes, businesses and industries throughout the United States. AGA is an advocate for natural gas utility companies and their customers and provides a broad range of programs and services for member natural gas pipelines, marketers, gatherers, international natural gas companies and industry associates. 1 Find AGA products.
Air Break In a drainage system, a piping arrangement in which a drain from a fixture, appliance, or device discharges indirectly into a fixture, receptor or interceptor at a point below the flood level rim of the receptor. Find Air Break products.
Air Chamber A pressure surge absorbing device operating through the compressibility of air. Find Air Chamber products.
Air Conditioning The treatment of air so as to control simultaneously its temperature, humidity, cleaness and distribution to meet the requirements of a conditioned space. Find Air Conditioning products.
Air Gap In a drainage system, the unobstructed vertical distance through the free atmosphere between the outlet of the wastepipe and the flood level rim of the receptor into which it is discharging. In a water distribution system, the unobstructed vertical distance through the free atmosphere between the outlet of the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture or other device and the flood level rim of the receptor. Find Air Gap products.
Air Shutter An adjustable device for varying the size of the primary air inlet. Find Air Shutter products.
Air, Circulating Air for cooling, heating or ventilation distributed to habitable spaces. Find Air, Circulating products.
Ambient Temperature The temperature of the surrounding medium, usuallly used to refer to the temperature of the air in which a structure is situated or a device operates. Find Ambient Temperature products.
Appliance Equipment Any device that uses gas as a fuel or raw material to produce light, heat, power, refrigeration or air conditioning. Find Appliance Equipment products.
Appliance, Fan-Assisted Combustion An appliance equipped with an integral mechanical means to either draw or force products of combustion through the combustion chamber or heat exchanger. Find Appliance, Fan-Assisted Combustion products.
Area Drain A receptor designed to collect surface or storm water from an open area. Find Area Drain products.
Auger An instrument that can be used to remove substances from pipes. Find Auger products.
Automatic Gas Shutoff Device A device which limits the temperature of water in a hot water supply system such that when it attains some predetermined limit, it causes the gas to the system to be shut off. Find Automatic Gas Shutoff Device products.
Automatic Ignition Ignition of gas at the burner(s). Find Automatic Ignition products.
B
Backflow The flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable supply of water from any source or sources other than its intended sources. Find Backflow products.
Backflow Connection Any arrangement whereby backflow can occur. Find Backflow Connection products.
Backflow Drainage A reversal of flow in the drainage system. Find Backflow Drainage products.
Backflow Preventer A device or means to prevent backflow. Find Backflow Preventer products.
Backpressure Backflow A condition that may occur in the potable water distribution system, whereby a higher pressure than the supply pressure is created causing a reversal of flow into the potable water piping. Find Backpressure Backflow products.
Back-siphonage The flowing back of used, contaminated or polluted water from a plumbing fixture or vessel or other sources into a potable water supply pipe due to negative pressure in said pipe. Find Back-siphonage products.
Backwater Valve A device installed in a drain pipe to prevent backflow. Find Backwater Valve products.
Baffle An object placed in an appliance to change the direction of, or retard the flow of, air, air-gas mixtures or flue gases. Find Baffle products.
Battery of Fixtures Any group of two or more similiar adjacent fixtures which discharge into a common horizontal waste or soil branch. Find Battery of Fixtures products.
Bibb Also bibcock; a faucet with its nozzle bent downward. Find Bibb products.
Boiler Blow Tank A vessel designed to receive the discharge from a boiler blow-off outlet and to cool the discharge to a temperature which permits its safe discharge to the drainage system. Find Boiler Blow Tank products.
Boiler Blow-off An outlet on a boiler to permit emptying or discharge of sediment. Find Boiler Blow-off products.
Branch Any part of the piping system other than a riser, main or stack. Find Branch products.
BTU British Thermal Units. The term "BTU" is used to describe the heat value (energy content) of fuels, and also to describe the power of heating and cooling systems, such as furnaces, stoves, barbecue grills, and air conditioners. When used as a unit of power, BTU per hour (BTU/h) is understood, though this is often confusingly abbreviated to just "BTU". Find BTU products.
Building Drain, Sanitary A building drain which conveys sewage only. Find Building Drain, Sanitary products.
Building Drain, Storm A building drain which conveys storm water or other drainage, but no sewage. Find Building Drain, Storm products.
Building Sewer That part of the drainage system which extends to the end of the building drain and conveys its discharge to a public sewer, private sewer, individual sewage disposal system or other point of disposal. Find Building Sewer products.
BUNA Synthetic rubber formed by combining butadiene and sodium. Find BUNA products.
Burner A device (here, one in a gas grill) used to light fuel on fire and to maintain that fire. Find Burner products.
Butterfly Valve A disk that turns on an axis inside a pipe, used to allow flow in only one direction. Find Butterfly Valve products.
C
Cesspool A lined and covered excavation in the ground which receives the discharge of domestic sewage or other organic wastes from a drainage system, so designed as to retain the organic matter and solids, but permitting the liquids to seep through the bottom and sides. Find Cesspool products.
Clear Water Waste Effluent in which impurity levels are less than concentrations considered harmful by the Administrative Authority, such as cooling water and condesate drainage from refrigeration, and air conditioning equipment, cooled condensate from steam heating systems and residual water from ice making processes. Find Clear Water Waste products.
Combustion As used herein, the rapid oxidation of fuel gases accompanied by the production of heat and light. Find Combustion products.
Combustion Chamber The portion of an appliance where combustion occurs. Find Combustion Chamber products.
Combustion Products Constituents resulting in the combustion of a fuel with the oxygen of the air, including the inerts but excluding excess air. Find Combustion Products products.
Compression Coupling These are used to join together two pieces of conduit. Find Compression Coupling products.
Condensate The liquid that separates from a gas due to a reduction in temperature or increase in temperature or increase in pressure. Find Condensate products.
Consumption The maximum amount of gas per unit of time, usually expressed in cubic feet per hour, or BTU per hour, required for the operation of the appliance or appliances supplied. Find Consumption products.
Controls Devices designed to regulate the gas, air, water or electrical supply to a gas appliance. Find Controls products.
Convenience Outlet, Gas A permanently mounted, hand operated device providing a means for connecting and disconnecting an appliance or an appliance connector to the gas supply piping. The device includes an integral, manually operated gas valve with a nondisplaceable valve member so that disconnection can be accomplished only when Find Convenience Outlet, Gas products.
COP Coefficient of performance; the heating efficiency of the heat pump itself at laboratory "outdoor" test temperatures of 47 degrees, expressed as a percentage of BTU output divided by BTU input (KWH times 3,412). Find COP products.
CPVC Chlorinated polyvinyl chloride is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin. Uses include hot and cold water pipe, and industrial liquid handling. Find CPVC products.
Cross Connection Any connection or arrangement between two otherwise seperate piping sytems, one of which contains potable water and the other either water of questionable safety, steam, gas or chemical, whereby there may be a flow freom one system to the other, the direction of flow depending on the pressure differential between the two systems. Find Cross Connection products.
CTS Copper tube size. Find CTS products.
Cycling Cycling is a term used for the continues process of a pump turning on and off. Thus, if a pump turns on and off 10 times an hour, this means the pump "cycles" 10 times an hour. Also known as pump cycling. Find Cycling products.
D
Dielectric An insulator; or, a substance which does not conduct electricity. Find Dielectric products.
Differential This is a term used with an on/off pressure switch. It refers to the pressure difference between the pump or compressor being on and the pump or compressor being off. Thus, if a pump or compressor turns on at 50 PSI and off at 70 PSI, it has a differential of 20 PSI. Also see Pressure Switch. Find Differential products.
Double Check Valve Assembly A backflow prevention device consisting of two independently acting check valves, internally force loaded to a normally closed position between two tightly closing shut-off valves, and with means of testing for tightness. Find Double Check Valve Assembly products.
Drain Any pipe which carries waste or water-borne wastes in a building drainage system. Find Drain products.
DWV Drain, waste and vent; the combined sanitary drainage and venting systems in a building. Find DWV products.
E
EER Energy Efficient Ratio; for cooling, BTUH output divided by Watts input, at standardized laboratory settings. Find EER products.
Energy Factor A measure of efficiency. It is the rate of how much energy you get out of an appliance versus how much energy you put into the appliance. Find Energy Factor products.
EPDM Ethylene propylene dimonomer. Ethylene and propylene gases come together to form a plastic polymer. Find EPDM products.
Epoxy A very strong bonding material that is resistant to chemicals and shrinkage. Find Epoxy products.
Escutcheon The plate behind the shower's temperature and flow control. Find Escutcheon products.
F
FIP Female iron pipe. Find FIP products.
Flood Level Rim Flood Level Rim or Floor Rim - The edge of the receptor or fixture over which water overflows. Find Flood Level Rim products.
Flow Pressure The pressure in the water supply pipe near the faucet or water outlet while the faucet or water outlet is fully open and flowing. Find Flow Pressure products.
Flush Valve A device located at the bottom of a tank for flushing water closets and similar fixtures. Find Flush Valve products.
Flushometer Tank A device integrated within an air accumulator vessel which is designed to discharge a predetermined quantity of water to the fixture for flushing purposes. Find Flushometer Tank products.
Flushometer Valve A device which discharges a predetermined quanity of water to fixtures for flushing purposes and is closed by direct water pressure or other mechanical means. Find Flushometer Valve products.
Flux A substance applied to a place that is about to be welded or soldered to ease the flow of the solder and to prevent oxides from forming. Find Flux products.
Foot Valve A check valve at the lower end of a pipe. Find Foot Valve products.
Frost Free / Frost Proof Silcock Frost Free Silcock, also known as a Wall Hydrant or Frost Proof Silcock valve usually has a standard hose connection. Designed to provide a year round source of water to areas of structures that are subject to freezing temperatures. The hydrant valve is connected to the supply piping in the heated portion of the structure where it shuts off water flow, eliminating the possibility of freezing. Find Frost Free / Frost Proof Silcock products.
G
Galvanized Iron or steel that has been coated with rust-resistant zinc. Find Galvanized products.
Gate Valve A regulator that opens by lifting a rectangular piece out of the way of the fluid and closes by putting it back. Find Gate Valve products.
Globe Valve A ball valve closed in a round chamber. Find Globe Valve products.
GPM Gallons per minute Find GPM products.
Grade The fall (slope) of a line of pipe in reference to a horizontal plane. In drainage it is usually expressed as the fall in a fraction of an inch per foot length of pipe. Find Grade products.
Ground Water Subsurface water occupying the zone of saturation. Find Ground Water products.
H
Hammer Flaring Tool A tool used to form a flame in a pipe. Find Hammer Flaring Tool products.
Hazard High In backflow prevention, an actual or potential threat of contamination to the potable water supply of a physical or toxic nature that would be a danger to health. Find Hazard High products.
Hazard Low In backflow prevention, an actual or potential threat to the physical properties or the potability of the water supply, but which could not constitute a health or system hazard. Find Hazard Low products.
Hot Water Hot water is supplied to plumbing fixtures at a temperature of no less than 120 degrees and no more than 140 degrees, except that commercial dishwashing machines and similar equipment shall be provided with water at 180 degrees for sterilization purposes. Find Hot Water products.
HP Also horsepower, equal to about 745.7 watts, 33,000 foot-pounds per minute, or 1.5 times the power of a strong horse. Find HP products.
HSPF Heating Seasonal Performance Factor; similiar to SPF, but expressed as a ratio of BTU output divided by KWH input, as required by the U.S Department of Energy. Find HSPF products.
Humidifier A humidifier is a device that is used to increase the moisture content in the atmosphere. Humidifiers are especially useful in hot, dry climates, where the lack of moisture in the air may cause irritation to the skin, throat and nasal passages. Wooden articles, such as musical instruments, picture frames, furniture, wooden floors, etc., can also be damaged due to low moisture content which can cause shrinking, cracking, separation of joints and failure of glue joints and fasteners. Humidifiers help people relieve conditions that are know to cause and irritate respiratory infections and are also used for some relief of symptoms by people who have sleeping disorders such as Sleep Alpena. Humidifiers vary is size from small portable models used for a single room or spot humidification or be integrated with a central air conditioning or furnace system in residential or commercial buildings, so that moisture is released to the air requiring conditioning. Humidifiers may produce moisture via introducing a cool or a warm mist or steam into the atmosphere. Find Humidifier products.
Hydronics Hydronics is the name for the use of water as the heat-transfer medium in heating and cooling systems. Some of the oldest and most common examples are steam and hot-water radiators. In large-scale commercial buildings such as high-rise and campus facilities, a hydronics system may include both a chilled and a heated water loop, to provide for both heating and air conditioning. Chillers and cooling towers are used separately or together as means to provide water cooling, while boilers heat water. In addition, many larger cities have a district heating system that provides, through underground piping, publicly available steam and chilled water. By paying a service fee, a building in the service district may be connected to these. Hydronic Systems are of two basic types: Steam & Hot Water Hydronic systems are classified in five ways: Flow Generation (Forced Flow or Gravity Flow) Temperature (Low, Medium and High) Pressurization (Low, Medium and High) Piping Arrangement Pumping Arrangement Hydronic systems may be divided into several general piping arrangement categories: Single or One-pipe Two Pipe steam, (Direct Return or Reverse Return) Three Pipe Four Pipe Series Loop Find Hydronics products.
I
Indirect Waste Pipe A waste pipe which does not connect directly with the drainage system, but discharges into the drainage system through an air break or air gap into a trap, fixture, receptor or interceptor. Find Indirect Waste Pipe products.
Interceptor A device designed and installed so as to separate and retain deleterious, hazardous or undesirable matter from normal wastes while permitting normal sewage or liquid wastes to discharge into the drainage system by gravity. Find Interceptor products.
Invert The lowest portion of the inside of a horizontal pipe. Find Invert products.
IPS Iron pipe standard. IPS refers to the threading on a pipe. Find IPS products.
IrrigationTutorials.com An on-line resource about all things Irrigation. The Irrigation Tutorials are known as the Web's Mother Lode of Free Irrigation Information! In fact, you will find information from filters to sprinklers to pumps, if it's irrigation related you'll find at least some information on it here. Start with the irrigation tutorials! They're all FREE! Jess's website is not affiliated with any irrigation, sprinkler, or drip equipment manufacturer or supplier. As a sales organization we do not lightly refer our client-visitors to links off of our site but to not to tell you about this wonderful knowledge base would be irresponsible. Just remember we sent ya ok? You won't be back for a while because this is a big and interesting site so PLEASE bookmark us before you leave - Thanks ! Learn a lot! Visit Jess Stryker's IrrigationTutorials.com at: http://www.irrigationtutorials.com www.IrrigationTutorials.com "Thank You", to Jess for building The Irrigation tutorials. Find IrrigationTutorials.com products.
K
KWH Kilowatt hour; thousand of watts per hour, the measure of electrical usage. 1 KWH=3,412 BTU's. Find KWH products.
M
MAPP Methyl acetylene propadiene stabilized. A very flammable gas used in HVAC/R and plumbing applications. Find MAPP products.
MBH Thousands of BTU's per hour. Also displayed as MBTUH. Find MBH products.
MIP Male iron pipe. Find MIP products.
MPT Male pipe thread. Find MPT products.
N
Nipple A short length of pipe threaded on both ends. Find Nipple products.
Non-potable Water Water not safe for drinking or for personal or culinary use. Find Non-potable Water products.
O
OD Outside diameter. Find OD products.
Offset A combination of elbows or bends which brings one section of the pipe out of line but into a line parallel with the other section. Find Offset products.
Offset Double Two changes of direction installed in succession or series in a continuous pipe. Find Offset Double products.
Offset Return A double offset installed so as to return the pipe to its original alignment. Find Offset Return products.
OHV Overhead valve. Find OHV products.
P
PEX Cross-linked polyethylene. It is formed into tubing, and is used predominantly in hydronic radiant heating systems, domestic water piping and insulation for high tension electrical cables. Find PEX products.
Plumbing System Includes the water supply and distribution pipes, plumbing fixtures and traps; soil, waste and vent pipes; and sanitary and storm drains and building sewers, including their respective connections, devices and appurtenances to an approved point of disposal. Find Plumbing System products.
Pneumatic Run by or filled with compressed air. Find Pneumatic products.
Pollution The addition of sewage, industrial wastes, or other harmful or objectional material to water. Sources of pollution may be privies, septic tanks, subsurface irrigation fields, seepage pits, sink drains, barnyard wastes, etc. Find Pollution products.
Polypropylene A strong, durable, plastic polymer used in molded parts. Find Polypropylene products.
Potable Water Water free from impurities present in amounts sufficient to cause disease or harmful physiological effects and conforming in its bacteriological and chemical quality to the requirements of the Public Health Service Drinking Water Standards or the regulations of the public health authority having jurisdiction. Find Potable Water products.
Pressure Balancing Valve Mixing valve which senses incoming hot and cold water pressures and compensates for fluctuations in either to stabilize outlet temperature. Find Pressure Balancing Valve products.
Pressure Switch An electrical switch that is operated by a change in pressure. A common pressure switch applications are found on water pumps, pressure booster pumps, some designs of sump pumps and effluent pumps, and air compressors. A common application of a pressure switch is to automatically turn a pump on or shut it off automatically. It would work in this way, if the pressure switch senses low water or low air pressure with-in a system the switch is designed in such as way as it will turn the pump or air compressor on to re-establish the charge or required volume of water or air (Turn On/Cut-In), thus creating more pressure within the vessel or system. Once a specific high pressure setting is achieved, the pressure switch senses that pressure has met it's high set point and de-energizes the pump or compressor shutting it off (Turn Off/ Cut Out Pressure). Also see: Turn On/Cut-In Pressure and Turn Off/ Cut Out Pressure Find Pressure Switch products.
Pressure Tank A holding tank normally filled with water and or air. In the case of a water system pressure tank the tank may be the type that has a rubber liner inside the tank separates the water and air. Water is forced inside the pressure tank when the pump is operated, which in turn compresses the encapsulated air. Two things happen when the pump is operated. The pressure tank is filled to store water and the air inside the tank is compressed. Once a tank is pressurized small water demands may be met by the captured pressurized water, eliminating excessive motor cycling. Find Pressure Tank products.
Public Toilet Room A toilet room intended to serve the transient public. Find Public Toilet Room products.
PVC Also polyvinyl chloride. A very strong and commonly used material in plumbing pipes. Find PVC products.
R
Readily Accessible Direct access without requiring the use of tools for removing or moving any panel, door or similiar obstruction Find Readily Accessible products.
Receptor A fixture or device which receives the discharge from indirect waste pipes. Find Receptor products.
Reduced Pressure Principle Backpressure 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, in which there is an automatic relief means of venting to atmosphere internally loaded to a normally open position between two tightly closing shut-off valves and with means for testing for tightness of the checks and opening of relief means. Find Reduced Pressure Principle Backpressure Backflow Preventer products.
Rim An unobsructed open edge of a fixture. Find Rim products.
Riser A water supply pipe which extends vertically one full story or more to convey water to branches or to a group of fixtures. Find Riser products.
Roof Drain A drain installed to receive water collecting on the surface of a roof and to discharge it into a leader or a conductor. Find Roof Drain products.
Roughing-in The installation of all parts of the plumbing system which can be completed prior to the installation of fixtures. This includes drainage, water supply and vent piping, and the necessary fixture supports, or any fixtures that are built into the structure. Find Roughing-in products.
S
Sanitary Sewer A sewer which carries sewage and excludes storm, surface and ground water. Find Sanitary Sewer products.
Schedules of Pipe The most popular schedules of pipe are 40, 80, and 160. The schedule does not, contrary to popular belief, tell anything about the pressure the pipe can take, but is instead related to pipe thickness. Find Schedules of Pipe products.
SDR An abbreviation for "standard dimensional ratio", which relates to a specific ratio of the average specified outside diameter to the minimum wall thickness for outside controlled diameter plastic pipe. Find SDR products.
SEER Seasonal Energy Efficiency Ratio; for cooling, the ratio of BTUH divided by Watts for the entire cooling system. Find SEER products.
Septic Tank A water-tight receptacle which receives the discharge of a building's sanitary drainage system of part thereof, and is designed and constructed so as to separate solids from liquids, digest organic matter through a period of detention, and allow the liquids to discharge into the soil outside of the tank through a system of open join to perforated piping, or a sewage pipe. Find Septic Tank products.
Sewage Any liquid waste containing animal or or vegetable matter in suspension or solution, and may include liquids containing chemicals in solution. Find Sewage products.
Sewage Pump A permanently installed mechanical device, other than a ejector, for removing sewage or liquid waste from a sump. Find Sewage Pump products.
Sillcock Also called a bibcock, these devices provide hose connections outside of buildings. Find Sillcock products.
Solder An alloy applied to the joint between metal objects to unite them. Find Solder products.
SPF Seasonal Performance Factor; the overall winter efficiency of the heat pump and supplementary heat source, expressed as the percentage of total BTU input (KWH times 3,412). Find SPF products.
Submersible Pump A water pump that is literally, submersed under water. When refering to a water pump a submersible pump is usually used in an application where water is not available at shallow depths or above ground (like a river or stream). A submersible water pump is normally installed in a drilled well where it is submerged in the water table. When speaking in terms of other special application pumps such as sump pumps, effulent or de-watering pumps theytoo may be referred to as submersible pumps in relation to other pumps that may preform similar duties but not be the style or type of pump that is submerged. Referrred to in abbreviation as a "Sub". Find Submersible Pump products.
Sump A pit where water or other liquid is collected. Find Sump products.
Sweat To join metal by interposing cold solder and then heating, or the joint where this has been done. Find Sweat products.
T
test test Find test products.
T
Thermoplastic A substance which is deformable and melts to a liquid when heated while it freezes to a brittle glass when cooled. Find Thermoplastic products.
Ton A ton is a unit of measurement that refers to the amount of heat a particular cooling application is able (or required) to remove from a conditioned space. It is equal to 12,000 BTU. Find Ton products.
Turn Off/Cut-Out Pressure When a compressor or water pump pump is turned off via a pressure switch, it's done so by the pressure switch reaching the high pressure turn off point or otherwise known as the high pressure cut-out point. Also see Pressure Switch. Find Turn Off/Cut-Out Pressure products.
Turn On/Cut-In Pressure When a compressor or water pump is turned on via a pressure switch, it's done so by the pressure switch reaching the low pressure turn on point or otherwise known as the low pressure cut-in point. Also see Pressure Switch. Find Turn On/Cut-In Pressure products.
V
Vacuum Breaker, Non-pressure Type A vacuum breaker which is not designed to be subject to static line pressure Find Vacuum Breaker, Non-pressure Type products.
Vacuum Breaker, Pressure Type A vacuum breaker designed to operate under conditions of static line pressure. Find Vacuum Breaker, Pressure Type products.
Vacuum Relief Valve A device to prevent vacuum in a pressure vessel. Find Vacuum Relief Valve products.
Vent, Branch A vent connecting one or more individual vents with a vent stack or stack vent. Find Vent, Branch products.
Vent, Circuit A branch vent that serves two or more traps and extends from the downstream side of the highest fixture connection of a horizontal branch to the vent stack. Find Vent, Circuit products.
Vent, Common A vent connected at a common connection. Find Vent, Common products.
Vent, Dry A Dry Vent is a vent that does not recieve the discharge of any sewage or waste. Find Vent, Dry products.
Vent, Individual A pipe installed to vent a fixture drain. Find Vent, Individual products.
Vent, Relief An auxillary vent which permits additional circulation of air in or between drainage and vent system. Find Vent, Relief products.
Vent, Stack A vertical vent pipe installed to provide circulation of air to and from the drainage system and which extends through on or more stories. Find Vent, Stack products.
Vent, System A pipe, or pipes, installed to provide a flow of air to or from the drainage system or to provide a circulation of air within such systems to protect trap seals from siphonage and back pressure. Find Vent, System products.
Vent, Wet A vent which recieves the discharge of waste other than from water closets and kitchen sinks. Find Vent, Wet products.
W
Wall Hung Water Closet A water closet installed in such a way that no part of the water closet touches the floor. Find Wall Hung Water Closet products.
Wall Hydrant Wall Hydrant or Frost Proof Silcock valve usually has a standard hose connection. Wall Hydrants are designed to provide a year round source of water to areas of structures that are subject to freezing temperatures. The hydrant valve is connected to the supply piping in the heated portion of the structure where it shuts off water flow, eliminating the possibility of freezing. Wall Hydrant may also be known as a - frost free silcock. Find Wall Hydrant products.
Waste Pipe A pipe which conveys only waste. Find Waste Pipe products.
Water Distributing Pipe A pipe within the building or on the premises which conveys water from the water-service pipe to the point of usage. Find Water Distributing Pipe products.
Water Feeder Water Feeder Units provide a reliable method of controlling a pump that in combination provide the proper steam boiler water level. The Water Feeded and Pump fill the boiler with water as dictated by the limits recommended by the boiler manufacturer to maintain maximum steaming efficiency. In addition to the fill feature pump switch, a steam boiler water feeder may have a switch which can provide low water burner cut-off. Where the burner switch interrupts the burner circuit when the water drops below the minimum level and may also provides a low water alarm if desired. Find Water Feeder products.
Water Hammer Water hammer (or, more generally, fluid hammer) is a pressure surge or wave resulting when a fluid in motion is forced to stop or change direction suddenly (Momentum Change). Water hammer commonly occurs when a valve is closed suddenly at an end of a pipeline system, and a pressure wave propagates in the pipe. The noises of banging pipes associated with water hammer can be a very disturbing sound and at the same time water hammer is also very destructive to the piping system causing many plumbing problems including leaks. Find Water Hammer products.
Water Main A water supply pipe for public use. Find Water Main products.
Water Outlet A discharge opening through which water is supplied to a fixture, into the atmosphere, to a boiler or heating system, or to any devices or equipment requiring water to operate, but which are not part of the plumbing system. Find Water Outlet products.
Water Service Pipe The pipe from the water main, or other source of potable water supply, to the water distributing sytem of the building served. Find Water Service Pipe products.
Water Temperature Control Valve A valve of the pressure balance, thermostatic mixing or combination pressure balance/thermostatic mixing type, which is designed to control water temperature to reduce the risk of scalding. Find Water Temperature Control Valve products.
Whirlpool Bathtub A plumbing appliance consisting of a bathtub fixture which is equipped and fiited with a circulation piping system, pump and other appurtenances and is so designed to accept, circulate and discharge bathtub water upon each use. Find Whirlpool Bathtub products.
Wier (trap or crown) Discharge overflow of the trap outlet. Find Wier (trap or crown) products.
Winterization Winterization of a pump means to prepare it for freezing weather. When we winterize, we avoid damage caused by freezing temperatures and the formation of ice that can damage the water system. By taking the proper steps to protect the water system early, before pipes, pumps, irrigation and water systems freeze, we prevent flood damage and avoid costly repairs. Find Winterization products.