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312:. That motivated the legislators to authorise the construction of a modern sewerage system in the city, of which the S-bend was an essential component. As of 2017, only about two-thirds of the world population have access to traps, in spite of the evidence that good sewage systems significantly improve economic productivity in places that employ them.
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which would allow heat to escape to locations where it is not wanted. Similarly, some pressure gauges are connected to systems using U bends to maintain a local gas while the system uses liquid. For decorative effect, they can be disguised as complete loops of pipe, creating more than one U for added
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in 1880. The U-bend could not jam, so, unlike the S-bend, it did not need an overflow. In the United States, traps are commonly referred to as P-traps. It is the addition of a 90 degree fitting on the outlet side of a U-bend, thereby creating a P-like shape (oriented horizontally). It is also
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can suction or blow water out of the traps. This is usually avoided by venting the drain pipes downstream of the trap; by being vented to the atmosphere outside the building, the drain lines never operate at a pressure much higher or lower than atmospheric pressure. In the United States,
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as unvented S-traps tend to siphon dry. It may be possible to determine whether a household uses an S- or U-bend by the presence of an overflow pipe outlet. What is required instead is a P-trap with proper venting. Certain drum-styled traps are also discouraged or banned.
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from entering buildings while allowing waste materials to pass through. In oil refineries, traps are used to prevent hydrocarbons and other dangerous gases and chemical fumes from escaping through drains. In heating systems, the same feature is used to prevent
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Because of its shape, the trap retains some water after the fixture's use. This water creates an air seal that prevents sewer gas from passing from the drain pipes back into the building. Essentially all plumbing fixtures including
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and other debris and limit the size of objects that enter the plumbing system, thereby catching oversized objects. For all of these reasons, most traps may be disassembled for cleaning or provide a cleanout feature.
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Because it is a localized low-point in the plumbing, sink traps also tend to capture small and heavy objects (such as jewellery or coins) accidentally dropped down the sink. Traps also tend to collect hair, sand,
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When a trap is installed on a fixture that is not routinely used—such as a floor drain—the eventual evaporation of the water in the trap must be considered. In these cases, a
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Once invented, despite being simple and reasonably reliable, widespread use was slow coming. In
Britain, the requirement to use traps was introduced only after the
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486:(First printing, 2011, including January 2012 errata ed.). Country Club Hills, Illinois: International Code Council. January 2012. pp. 27.1–27.2.
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may be attached to the trap to prevent the disruption of the seal in other nearby traps. The most common use of standpipes in houses is for clothes
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Water seal in drain pipe under a sink. Water enters at right, fills the trap, and continues left. Inverted siphoning occurs below the line "A".
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may be used instead. These devices avoid negative pressure in the drain pipe by venting room air into the drain pipe (behind the trap). A "
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Trap with copper drain pipe at underside of firestop packing in two-hour fire-resistance rated concrete floor slab
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may be installed; these are devices that automatically recharge traps with water to maintain their water seals.
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Where a volume of water may be rapidly discharged through the trap, a vertical vented pipe called a
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is a U-shaped portion of pipe designed to trap liquid or gas to prevent unwanted flow; most notably
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in 1880. The new U-bend could not jam, so, unlike the S-bend, it did not need an overflow.
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Maintaining the water seal is critical to trap operation; traps might dry out, and poor
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International
Association of Plumbing and Mechanical Officials (IAPMO)
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in London, in the summer of 1858, when the objectionable smell of the
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In chemical engineering applications, a trap may be known as a lute.
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Wash-out closet, manufactured by Myers
Sanitary Depot, New York, 1890
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referred to as a sink trap because it is installed under most sinks.
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In some regions of the US, "S" traps are no longer accepted by the
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In domestic applications, traps are typically U, S, Q, or J-shaped
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Includes several photographs of various types of drum traps.
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must be equipped with either an internal or external trap.
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293:following the introduction of the U-shaped trap by
209:following the introduction of the U-shaped trap by
75:. Unsourced material may be challenged and removed.
241:A bottle trap, which can be unscrewed for cleaning
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546:"50 Things That Made the Modern Economy: S-Bend"
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135:Learn how and when to remove this message
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1679:Plumbing & Drainage Institute (PDI)
480:2010 Florida Building Code: Residential
197:. An S-shaped trap is also known as an
14:
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2566:History of water supply and sanitation
2452:Sulabh International Museum of Toilets
451:
184:
1775:
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281:An S-shaped trap is also known as an
234:almost always have an internal trap.
27:"House trap" redirects here. For the
1629:Mechanical, electrical, and plumbing
73:adding citations to reliable sources
44:
2621:Workers' right to access the toilet
2571:Human right to water and sanitation
566:Saltzman, Reuben (April 18, 2013).
371:Accepted traps in the United States
352:When a vent cannot be provided, an
24:
2203:Toilet-related injuries and deaths
580:from the original on July 15, 2015
25:
2658:
2417:Madison Museum of Bathroom Tissue
949:Push-to-pull compression fittings
597:
2581:Infection prevention and control
289:in 1775 but became known as the
205:in 1775 but became known as the
49:
2169:Privatization of public toilets
60:needs additional citations for
559:
538:
509:
471:
454:"How to Plumb for a Standpipe"
445:
13:
1:
570:. The Home Inspector (blog).
452:Deziel, Chris (18 Feb 2013).
438:
316:Venting and auxiliary devices
2437:Public toilets in Bratislava
1689:World Plumbing Council (WPC)
1240:Reduced pressure zone device
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7:
2107:(combined toilet and bidet)
1801:
1684:Uniform Plumbing Code (UPC)
1403:Instant hot water dispenser
1205:Piping and plumbing fitting
383:
35:. For the music genre, see
10:
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2208:Toilet Revolution in China
1030:Backflow prevention device
1015:Atmospheric vacuum breaker
360:" is another alternative.
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193:located below or within a
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1290:Thermostatic mixing valve
1007:
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568:"How Bad Are Drum Traps?"
2472:Toilets in New York City
2422:Modern Toilet Restaurant
2154:Islamic toilet etiquette
1020:Automatic bleeding valve
659:Compatibility (chemical)
2376:Fecal sludge management
2335:Urine collection device
2320:Urinal deodorizer block
2285:Female urination device
1225:Pressure-balanced valve
1220:Pressure vacuum breaker
929:Pipe (fluid conveyance)
871:Drain-waste-vent system
851:Chemical drain cleaners
525:Oxford University Press
458:San Francisco Chronicle
402:Drain-waste-vent system
393:, an older type of trap
2606:Sustainable sanitation
2591:Reuse of human excreta
1746:Template:Public health
1418:water recycling shower
1388:Hot water storage tank
719:Onsite sewage facility
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242:
201:. It was invented by
160:
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2561:Ecological sanitation
2462:Toilet History Museum
2412:Hundertwasser Toilets
2354:Feces-related aspects
2273:Urine-related aspects
2174:Swachh Bharat Mission
1731:Fire sprinkler system
1440:Tankless water heater
1383:Garbage disposal unit
1368:Electric water boiler
840:British Standard Pipe
407:Garbage disposal unit
331:
323:
285:. It was invented by
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240:
158:
150:
2477:Bryant Park restroom
2325:Urinal (health care)
2144:Honeywagon (vehicle)
1430:Storage water heater
999:Water heat recycling
907:National Pipe Thread
809:Water supply network
354:air admittance valve
310:Houses of Parliament
84:"Trap" plumbing
69:improve this article
2576:Improved sanitation
2427:National Poo Museum
2371:Defecation postures
2232:Jobs and activities
2134:Bathroom privileges
2090:Urine-diverting dry
1761:Template:Wastewater
1619:Hydrostatic testing
1260:Rooftop water tower
856:Compression fitting
185:General description
2525:Groom of the Stool
2290:Interactive urinal
2244:Restroom attendant
1715:Waterborne disease
1614:Hydronic balancing
1373:Evaporative cooler
1338:Accessible bathtub
1235:Radiator (heating)
1215:Pressure regulator
1110:Double check valve
1085:Concentric reducer
886:Garden Hose Thread
779:Thermal insulation
649:Air gap (plumbing)
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2249:Sanitation worker
2239:Manual scavenging
1867:Toilet seat riser
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1751:Template:Sewerage
1698:Health and safety
1674:NSF International
1484:Specialized tools
1363:Drinking fountain
1330:Plumbing fixtures
1210:Plug (sanitation)
1195:Nipple (plumbing)
1115:Eccentric reducer
1095:Coupling (piping)
1060:Chemigation valve
913:Nominal Pipe Size
876:Ductile iron pipe
774:Thermal expansion
493:978-1-60983-188-2
287:Alexander Cumming
203:Alexander Cumming
159:Examples of traps
145:
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119:
16:(Redirected from
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2616:World Toilet Day
2611:Waste management
2601:Sewage treatment
2488:Historical terms
2467:Toilets in Japan
2149:Incontinence pad
2139:Bathroom reading
1901:Toilet rim block
1889:Holder/dispenser
1852:Electronic bidet
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1756:Template:Toilets
1521:Flare-nut wrench
1280:Submersible pump
1105:Dielectric union
1025:Automatic faucet
984:Thread seal tape
944:Plastic pipework
704:Hydrostatic loop
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456:. Demand Media,
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1450:Washing machine
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1150:Flushing trough
1100:Diaphragm valve
1090:Condensate pump
1070:Circulator pump
1050:Butterfly valve
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974:Solvent welding
866:Crimp (joining)
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764:Surface tension
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377:building codes
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343:plumbing codes
332:Typical P-trap
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295:Thomas Crapper
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211:Thomas Crapper
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417:Septic system
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125:December 2016
117:
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93:
89:
86: –
85:
81:
80:Find sources:
74:
70:
64:
63:
58:This article
56:
52:
47:
46:
38:
34:
31:episode, see
30:
29:Bob's Burgers
19:
2540:Privy midden
2361:Anal hygiene
2254:Slopping out
2223:Vacuum truck
2198:Toilet plume
2188:
2129:Adult diaper
2115:Cultural and
1999:Incinerating
1905:
1884:Toilet paper
1832:Bidet shower
1634:Pipe marking
1607:and services
1603:Professions,
1551:Strap wrench
1491:Basin wrench
1470:Water heater
1465:Water filter
1378:Flush toilet
1353:Dehumidifier
1295:Trench drain
1275:Street elbow
1265:Safety valve
1250:Relief valve
1190:Needle valve
1175:Grinder pump
1145:Flow limiter
1130:Float switch
1065:Chopper pump
1045:Booster pump
994:Tube bending
939:Pipe support
804:Water hammer
788:
784:Thermosiphon
714:Neutral axis
584:December 28,
582:. Retrieved
573:Star Tribune
571:
561:
550:. Retrieved
540:
528:. Retrieved
520:
511:
497:. Retrieved
479:
473:
461:. Retrieved
447:
374:
362:
358:Chicago Loop
351:
346:
335:
306:River Thames
299:
290:
282:
280:
264:
255:
253:
244:
216:
206:
198:
188:
168:
162:
131:
122:
112:
105:
98:
91:
79:
67:Please help
62:verification
59:
28:
2535:Pail closet
2520:Gong farmer
2505:Close stool
2500:Chamber pot
2447:Shit Museum
2100:Vermifilter
2004:Intelligent
1894:Orientation
1857:Flushometer
1579:Flow sensor
1567:and control
1565:Measurement
1556:Tap and die
1531:Pipe wrench
1516:Driving cap
1408:Laundry tub
1285:Tap (valve)
1270:Sewage pump
1255:Riser clamp
1200:Pinch valve
1170:Grease trap
1165:Globe valve
1155:Flushometer
1140:Floor drain
1135:Float valve
1055:Check valve
1040:Bleed screw
814:Water table
754:Storm sewer
640:Fundamental
530:21 December
422:Septic tank
391:Buchan trap
365:trap primer
302:Great Stink
173:sewer gases
2636:Categories
2596:Sanitation
2545:Reredorter
2530:Night soil
2366:Defecation
2179:Toilet god
2164:Latrinalia
2124:Accessible
2080:Telescopic
1995:(Scouting)
1967:Dual flush
1952:Composting
1639:Pipefitter
1526:Pipecutter
1506:Core drill
1393:Humidifier
1358:Dishwasher
1320:Zone valve
1315:Water tank
1160:Gate valve
1035:Ball valve
1008:Components
828:Technology
799:Wastewater
759:Stormwater
552:2018-11-02
439:References
432:Water pipe
412:Sanitation
347:vent stack
248:food waste
181:efficacy.
95:newspapers
37:Trap music
2642:Bathrooms
2515:Garderobe
2442:Rest area
2407:Haewoojae
2391:Scatology
2330:Urination
2310:Sanistand
2264:Toileting
2059:Sanisette
2014:Low-flush
1810:Equipment
1658:Industry
1644:Pipelayer
1501:Borescope
1496:Blowtorch
1435:Sump pump
969:Soldering
934:Pipe dope
897:Hydronics
769:Tap water
734:Sewer gas
699:Heat trap
694:Greywater
664:Corrosion
427:Tap water
256:standpipe
33:Housetrap
2554:See also
2495:Aphedron
2432:Outhouse
2300:Pee curl
2044:Portable
2019:On-board
1982:Freezing
1947:Chemical
1927:Arborloo
1922:Aircraft
1817:Ballcock
1724:See also
1710:Scalding
1398:Icemaker
1185:Manifold
744:Sewerage
724:Pressure
679:Fuel gas
654:Backflow
642:concepts
633:Plumbing
578:Archived
397:Drainage
384:See also
224:bathtubs
165:plumbing
2510:Dansker
2295:Pissoir
2159:Istinja
2105:Washlet
2085:Treebog
2009:Latrine
1972:EToilet
1942:Cathole
1847:Commode
1842:Cistern
1803:Toilets
1649:Plumber
1605:trades,
1546:Plunger
1455:Washlet
1343:Bathtub
1245:Reducer
1075:Cistern
979:Swaging
959:Sealant
835:Brazing
338:venting
269:History
232:Toilets
228:showers
109:scholar
2647:Piping
2400:Places
2315:Urinal
2305:Pollee
2095:Vacuum
2054:Public
1989:(boat)
1937:Bucket
1874:Toilet
1822:Bedpan
1736:Piping
1445:Urinal
1413:Shower
919:O-ring
892:Gasket
749:Siphon
739:Sewage
517:"Lute"
499:1 July
490:
463:1 July
291:U-bend
283:S-bend
226:, and
207:U-bend
199:S-bend
111:
104:
97:
90:
82:
18:U-bend
2075:Squat
2070:Space
2049:Potty
1977:Flush
1932:Blair
1915:Types
1837:Brush
1827:Bidet
1348:Bidet
1310:Valve
954:Putty
924:Oakum
915:(NPS)
909:(NPT)
888:(GHT)
842:(BSP)
548:. BBC
484:(PDF)
220:sinks
116:JSTOR
102:books
2065:Sink
1993:Hudo
1987:Head
1862:Seat
1425:Sink
1230:Pump
819:Well
709:Leak
586:2016
532:2022
501:2016
488:ISBN
465:2016
191:pipe
169:trap
167:, a
88:news
2039:Pit
2034:Pig
2029:Pay
1962:Dry
163:In
71:by
2638::
523:.
519:.
349:.
222:,
1795:e
1788:t
1781:v
625:e
618:t
611:v
588:.
555:.
534:.
503:.
467:.
138:)
132:(
127:)
123:(
113:·
106:·
99:·
92:·
65:.
39:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
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