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Using a typical 1/4" per foot fall (slope) on a 1 1/2" drain, such as a sink drain, the vent must be within 6 feet of the trap to avoid falling below the drain level, and thereby not functioning as a vent.
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∙ 14y ago
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Should the trap be before or after vent or condensation drain?
The trap should be before the vent. The trap is used to maintain a watter barrier to prevent waste water and sewer gasses from entering the home. The vent is use after the trap to allow the water to flow freely in the pipe with out drawing the water from the trap.
What is the maximum distance of a water closet trap from a vent line?
toilet should have a vent with in three feet of down pipe, but as long as you are with in the drop range for hori. pipe run you can go as far as you want, but you need that air vent close as you can so that the suction from the toilet water does not pull the rest of water from toilet base(p trap).
What is the difference between vent and anti siphonage pipe?
The pipe installed for the purpose of ventilation is known as a vent pipe while a pipe which is installed in a house drainage to preserve the water seal of trap is an anti-siphonage pipe.
How do you check your vent pipe?
Vent pipe inspection kit
Allowable distance from trap to waste pipe?
Normally local codes prevail BUT I normally go no more then 24" from the trap and the trap located no more then 2ft from the vent
What is the proper way to run a condensate drain with a trap Does it need a vent?
The condensate drain on the a-coil should have a trap and the trap should be vented for proper operation . The vent should rise above the top edge of the drain pan in the unit. Their should be a capped clean out before the vent.
Do you install a vent line below the p trap?
The drain pipe should have a vent that goes up where the sink drain goes into it. That is where it vents. Sinks drain because there is nothing causing a vacuum when the water leaves the sink.
What is a wet vent?
Definition: Wet vent means a waste pipe that also serves as a vent pipe
Do you need an air vent installed for the dishwasher and garbage disposal and if so can it be installed another way if needed?
Your kitchen sink should already be vented if there is a p-trap draining to the wall. if it is an s-trap it is not vented and not to present code requirements. The dishwasher drain goes into the side of the disposal and the disposal should drain to the trap. A separate vent is not required for the disposal or dishwasher as the trap for the sink is what requires a vent.
Why does a vent pipe gargle?
blockage in vent tiring to relieve waste pipe
Should the trap be before or after vent?
Depends on your perspective what is before or after. If you're following the direction of the water flow, the trap needs to be before the vent. A water filled trap blocks bad smells/dangerous gasses from entering your home. Putting the vent closest to the sink would bypasses that block. It would also likely cause gurgling because of siphon action trying to pull the water out of your trap (the vent breaks the siphon because its easier to pull air down the vent than to remove the water from the trap) Right = Sink - trap - vent - main drain stack
How close or far apart must the vent be from a trap in a sewer system?
The FAI must be with in 4 feet of the bldg house sewerOther fixtures OTHER THEN Floor drains must be have their trap located with in 24" of the vent and the fixture with in 24" of the trap ..Other codes will vary but they are not in civilized areas
