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 Mobile ViewPLUMBING SYSTEM INSPECT DIAGNOSE REPAIR AGE of PLUMBING MATERIALS & FIXTURES AIR DISCHARGE at FAUCETS, FIXTURES ANTI-SCALD VALVES APPLIANCE EFFICIENCY RATINGS AQUASTAT CONTROL Functions BACKDRAFTING HEATING EQUIPMENT BACKUP PREVENTION, SEWER LINE BATH & KITCHEN DESIGN GUIDE BATHROOM MOLD BATHROOM VENTILATION BIOLOGICAL POLLUTANTS Bisphenol-A, BPA BLEVE EXPLOSIONS BLOCKED DRAIN REPAIR METHODS BOILERS, HEATING BUILDING SAFETY HAZARDS GUIDE CARBON MONOXIDE - CO CHECK VALVES CHEMICAL CONTAMINANTS in WATER CHIMNEY INSPECTION DIAGNOSIS REPAIR CHLORAMINE / CHLORINE Tests CHLORINE IN DRINKING WATER CHLORINE in WATER, HOW TO TEST FOR CHLORINE IN SEPTIC WASTEWATER CISTERNS CLOGGED DRAIN DIAGNOSIS & REPAIR CLOGGED SUPPLY PIPING CONDENSATION or SWEATING PIPES, TANKS CROSS CONNECTIONS, PLUMBING DEBRIS in WATER SUPPLY, Water Heater DEPTH of DRAIN & SEWER PIPES DEPTH of SEPTIC TANK DRAIN & SEWER PIPING DRAIN a WATER HEATER TANK DRINKING WATER - EMERGENCY PURIFICATION DRINKING WATER - EMERGENCY SOURCES ELECTRIC WATER HEATERS FILTERS, WATER FLOODED HEATING EQUIPMENT REPAIR FLOODED WATER HEATER REPAIR FLOODED SEPTIC SYSTEMS, REPAIR FLUSHOMETER VALVES for TOILETS URINALS GAS FIRED WATER HEATERS GAS PIPING, VALVES, CONTROLS GALVANIC SCALE & METAL CORROSION HARD WATER - SOFTENERS HEAT TAPES, Heat, Insulation prevent Freeze-Up HOT WATER HEATERS KITCHEN & BATH DESIGN GUIDE KITCHEN VENTILATION LEAD POISONING HAZARDS GUIDE LEAD WATER PIPING HAZARDS & REMEDIES LEED GREEN BUILDING CERTIFICATION MANUALS & PARTS GUIDES - HVAC MIXING / ANTI-SCALD VALVES MIX VALVE SCALD PROTECTION, Best Practices MUNICIPAL WATER PRESSURE IMPROVEMENTS MOLD INFORMATION CENTER MVOCs & MOLDY MUSTY ODORS NOISE / SOUND DIAGNOSIS & CURE NOISE CONTROL for HEATING SYSTEMS NOISE CONTROL for PLUMBING NOISE, PLUMBING DRAIN DIAGNOSIS NOISE, PLUMBING DRAIN REPAIR NOISE, PLUMBING CHECKLIST NOISES, WATER HEATER NOISES, WATER PUMP ODORS & SMELLS DIAGNOSIS & CURE ODORS GASES SMELLS, DIAGNOSIS & CURE ODORS IN WATER ODORS, SEPTIC or SEWER ODORS SEWER GAS in COLD WEATHER ODORS, SULPHUR SMELL SOURCES ODORS, URINE REMOVAL OIL FIRED WATER HEATERS OIL-FIRED BOILERS, HEATING OIL FILTERS on HEATING EQUIPMENT OIL FUEL TYPES & CHARACTERISTICS OIL & GAS PIPING OIL TANKS OUTHOUSES & LATRINES PIPING IN buildings, Clogs Leaks Types AGE OF PIPING BRASS WATER PIPES CAST IRON DRAIN PIPING CAST IRON DRAIN LEAK, ODOR, REPAIR CHECK VALVES CHINESE DRYWALL HAZARDS COMPRESSION FITTINGS COPPER PIPING in buildings CLEANOUTS, PLUMBING DRAIN CLOGGED DRAIN DIAGNOSIS & REPAIR FIRST SIGNS of DRAIN CLOGGING DRAIN vs SEPTIC BLOCKED DRAIN? DRAIN DRAINFIELD DIAGNOSTIC TABLE PLUMBING DRAIN NOISE DIAGNOSIS PLUMBING DRAIN NOISE REPAIR CLOGGED SUPPLY PIPES, DIAGNOSIS CLOGGED SUPPLY PIPES, REPAIR CLOGGED SUPPLY PIPES, HOT WATER CONDENSATION or SWEATING PIPES, TANKS CROSS CONNECTIONS, PLUMBING DEBRIS in WATER SUPPLY, Water Heater DIAELECTRIC PIPE FITTINGS DRAIN & SEWER PIPING DRAIN NOISES FLARE FITTINGS FLOOR DRAIN / TRAP ODORS FREEZE-PROOF PIPES GAS PIPING, VALVES, CONTROLS GALVANIZED STEEL WATER PIPING LEAD PIPES in buildings LEAD IN DRINKING WATER, HOW to REDUCE LEAD POISONING HAZARDS GUIDE LEAD WATER PIPING HAZARDS & REMEDIES LEAK TYPES, Water Supply/Drain Pipe OIL TANK PIPING & PIPING DEFECTS PLASTIC PIPING PLASTIC PIPE LEAK CAUSES PLUMBING DRAIN CLEANOUTS PLUMBING DRAIN VENTS PLUMBING DRAIN NOISE DIAGNOSIS PLUMBING DRAIN NOISE REPAIR PLUMBING VENT DEFINITIONS & TYPES PLUMBING VENT DEFECTS & NOISES REPAIR BURST LEAKY PIPES SEPTIC BACKUP PREVENTION SEPTIC BACKUP REPAIR SEWER BACKUP PREVENTION SEWER GAS ODORS SEWER GAS ODORS in COLD WEATHER SEWER BACKUP PREVENTION SEWER LINE REPLACEMENT SOUND CONTROL for PLUMBING SUPPLY PIPING SULPHUR & SEWER GAS SMELL SOURCES TRAPS on DRAINS VALVES, PLUMBING VENT PIPING Water pipe clog diagnosis Water pipe clog repair guide WELL PIPING LEAK DIAGNOSIS WATER HAMMER NOISE DIAGNOSE & CURE WATER PIPES, Clogs Leaks Types WATER PRESSURE LOSS PLUMBING FIXTURES, KITCHEN, BATH Plumbing Materials & Fixtures, Age, Types PLASTIC HEATER VENT PLASTIC PIPING PLUMBING FIXTURE TRAPS PUMPS & WELLS FAUCETS & CONTROLS, KITCHEN & BATH SCALD PROTECTION SHOWERS, TUBS SINKS, FIXTURES SPAS, WHIRLPOOLS, SOAK/JETTED TUBS SPAS, WHIRLPOOLS, INSTALLATION TOILETS, INSPECT, INSTALL, REPAIR TOILET ALTERNATIVES TOILET FLUSHOMETER VALVES TOILET INSTALLATION PROCEDURE TOILET OVERFLOW EMERGENCY TOILET PLUGS, SEWER BACKUP TOILET REPAIR GUIDE TOILET TISSUE CHOICES TOILET TISSUE TEST TOILET TYPES Toilet Types, Flush Methods TOILETS, DON'T FLUSH LIST TRAPS on PLUMBING FIXTURES TUBS & TUB REPLACEMENTS or RELINERS RANGE BOILERS RELIEF VALVES - TP Valves on Boilers RELIEF VALVES - STEAM TP VALVES RELIEF VALVES - Water Heaters RELIEF VALVES - Water Tanks SEPTIC SYSTEM INSPECT DIAGNOSE REPAIR SEPTIC SYSTEMS ONLINE BOOK SEPTIC SYSTEM DESIGN BASICS SEPTIC DESIGN ALTERNATIVES SEPTIC INSPECTIONS SEPTIC & CESSPOOL SAFETY SEPTIC METHANE GAS SEPTIC ODORS SEPTIC PUMPS SEPTIC SYSTEM ODORS SEPTIC SYSTEM FLOODING SEWER BACKUP PREVENTION SEWAGE BACKUP, WHAT TO DO SEWAGE BACKUP TEST & CLEANUP SEWAGE BACKUP PREVENTION SEWAGE EJECTOR / GRINDER PUMPS SEWER LINE REPLACEMENT SEWER GAS ODORS First Steps for Sewer Gas Odors CHINESE DRYWALL HAZARDS Dangerous Conditions Backdrafting & Sewer/Septic Odors Building Drain & Sewer Line Odors Cure Odors in Septic Systems HYDROGEN SULFIDE GAS Other Odors Blamed on Septic / Sewer PLUMBING FIXTURE TRAPS Plumbing Vent Definitions, Types PLUMBING VENT DEFECTS & NOISES Septic System or Sewer Piping Site, Weather, or Failing Neighbors Tests for Indoor Sewer Gas Tracking Odors to Source SEWER GAS ODORS in COLD WEATHER SMELL PATCH TEST to Track Down Odors SULPHUR & SEWER GAS SMELL SOURCES SUMP PUMPS GUIDE SUPPLY PIPING SWEATING (CONDENSATION) on PIPES, TANKS TOILET INSTALLATION PROCEDURE TOILET OVERFLOW EMERGENCY TOILET PLUGS, SEWER BACKUP TOILET REPAIR GUIDE TOILET TYPES Toilet Types, Flush Methods TOILETS, DON'T FLUSH LIST TRAPS on PLUMBING FIXTURES WATER HEATERS WATER PRESSURE GAUGE ACCURACY WATER PRESSURE & FLOW MEASUREMENT WATER PRESSURE GAUGE ACCURACY WATER PRESSURE LOSS DIAGNOSIS & REPAIR WATER PRESSURE PROBLEM DIAGNOSIS TABLE WATER PRESSURE REPAIRS & COSTS WATER PUMPS, TANKS, TESTS, WELLS, REPAIRS WATER PUMPS, TANKS, WELLS - BASICS WATER PUMP TYPES & LIFE EXPECTANCY WATER PURIFIERS WATER QUALITY TESTS, CONTAMINANTS, TREATMENT WATER QUANTITY IMPROVEMENT WATER QUANTITY USAGE GUIDE WATER SHUTOFF VALVE LOCATION, USE WATER SHUTOFF VALVE, WELL PUMP WATER SOFTENERS & CONDITIONERS WATER SOURCE ALTERNATIVES WATER SUPPLY & DRAIN PIPING CLEANOUTS, PLUMBING DRAIN CLOGGED DRAIN DIAGNOSIS & REPAIR CLOGGED SUPPLY PIPES, DIAGNOSIS CLOGGED SUPPLY PIPES, REPAIR CLOGGED SUPPLY PIPES, HOT WATER DEBRIS in WATER SUPPLY, Water Heater PIPING IN buildings, Clogs Leaks Types SEPTIC BACKUP PREVENTION SEPTIC BACKUP REPAIR SEWER BACKUP PREVENTION SEWER GAS ODORS SEWER GAS ODORS in COLD WEATHER TRAPS on PLUMBING FIXTURES WATER PRESSURE LOSS DIAGNOSIS & REPAIR WATER TANK: USES, TROUBLESHOOTING WATER TANK AIR, HOW TO ADD WATER TANK AIR INLET VALVE WATER TANK AIR LOSS SIGNS WATER TANK AIR VALVE REPAIRS WATER TANK AIR VOLUME CONTROLS WATER TANK BLADDERS & CAPTIVE AIR WATER TANK CAPTIVE AIR vs TRADITIONAL WellMate WATER TANK CONTROLS & SWITCHES WATER TANK LIFE EXPECTANCY WATER TANK PRESSURE CALCULATIONS WATER TANK PRESSURE GAUGE WATER TANK REPLACEMENT WATER TANK REPAIRS WATER TANK REPLACEMENT WATER TANK SAFETY WATER TANK SIZE & VOLUME WATER TANK TYPES: WATER, OIL, EXPANSION, ALL WATER TESTS, CONTAMINANTS, TREATMENT WATER ODORS, CAUSE CURE WATER PUMPS & WELLS WATER SOFTENERS & CONDITIONERS WATER TREATMENT EQUIPMENT CHOICES WELL PUMP PRIMING PROCEDURE WELLS CISTERNS & SPRINGS WINTERIZE A BUILDING More Information |
This article defines plumbing vent system terms, distances, and functions, and other specifications and code requirements. We explain how plumbing vents work on buildings, why plumbing vent piping is needed, and what happens to the building drains when the vent piping is not working. We define the soil stack, waste stack, wet vents and dry vents, and we summarize the distances permitted between plumbing fixtures and their vent piping. InspectAPedia offers impartial, unbiased advice without conflicts of interest. We will block advertisements which we discover or readers inform us are associated with bad business practices, false-advertising, or junk science. Our contact info is at InspectAPedia.com/Contact.htm.Our page top sketch of a plumbing stack vent and other sketches included below are provided courtesy of Carson Dunlop. At PLUMBING DRAIN VENTS we explain the basics of proper plumbing vent piping and how errors cause trap siphonage, odors, and noises. We discuss how to diagnose and cure drain sounds at PLUMBING DRAIN NOISE DIAGNOSIS. Other advice about controlling plumbing noises in buildings is at SOUND CONTROL for PLUMBING. More details about plumbing drain line venting can be found at PLUMBING VENT DEFINITIONS & TYPES, also PLUMBING VENT DEFECTS & NOISES and at CLOGGED DRAIN DIAGNOSIS & REPAIR. Citation of this article by reference to this website and brief quotation for the sole purpose of review are permitted. Use of this information at other websites, in books or pamphlets for sale is reserved to the author. Technical review by industry experts has been performed and is ongoing - reviewers welcomed and are listed at References. © Copyright 2012 InspectAPedia.com, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use page top links to major topics or use links at the left of each page to navigate within topics and documents at this website. Green links show where you are in a document series or at this website. Plumbing Vent System Terms, Definitions, & Types of Vents
2. Allow sewer gases to be vented safely outdoors. Because sewer gases may flow back up into the building drain piping from a public sewer or private septic system, and because some sewer gases are included in building waste flowing through the piping, the plumbing vent system needs to carry these gases outside, usually above the building roof, where they are disposed-of safely and without leaving unpleasant, or possibly dangerous smells and gases inside the building. The basic plumbing vent terms are shown in the sketch at left. In these notes, the plumbing stack vents and other sketches included below are provided courtesy of Carson Dunlop. What is the Plumbing Stack Vent?
What is the Difference Between a Soil Stack & a Waste Stack?
The waste stack pipe shown in the sketch refers to any other vertical drain piping in the building that does not carry soil (sewage) from a sanitary fixture (toilet). Typically waste stack piping carries drainage away from sinks, tubs, and showers. How far can the plumbing vent piping be located from a plumbing fixture?
Tables of Plumbing Drain Pipe & Vent Pipe Sizes & Critical DistancesBelow our tables 1 and 2 summarize common plumbing code specifications for fixture venting and vent pipe sizes and distances that a plumbing fixture can be located (horizontally) from the vent stack. You'll see these distances also in our sketch at left. [Click any image to see an enlarged, detailed version.].
Plumbing Vent RoutingWithin the building the plumbing vent routing is generally unrestricted. That is, dry vent piping carrying only air, sewer gas, or moisture to above the roof line is unrestricted. However the piping does need to be protected from nails - use nail plates to protect vent and drain piping both where where piping passes through studs, joists, or rafters. What is Direct Venting of Plumbing Fixtures?
What is a Wet Vented Plumbing Fixture?
But a wet vented fixture requires a larger drain pipe diameter in its wet portion as we show in the sketch. This diameter increase helps assure adequate air flow into the drain system in the event that the sink basin (in this example) happens to be draining at the same moment that the toilet is flushed. (908.2.3.) Also note that wet vented fixtures (toilet, bathtub, shower, or floor drain) are permitted for bathrooms on the same floor level, not between floors. Questions & Answers regarding this articleQuestions & answers about plumbing vent piping and systems: code, installation, distances, sizes Ask a Question or Search InspectAPediaHTML Comment Box is loading comments...
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