Evaporation is the most common, syphoniage due to no vent or a block went is another cause or a leaking trap.
Same thing
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.
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
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.
Evaporation is the most common, syphoniage due to no vent or a block went is another cause or a leaking trap.
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
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).
Same thing
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.
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.
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
I BELIEVE: In a horizontal run, the p-trap must be below the vent. Otherwise, the vent may fill with water, creating a blockage, which would then syphon the water from the p-trap causing odors and health concerns from sewer gas. On a horizontal run, the vent must come off the run (presumably with a "wye") where the vent run is above the center line of the drainage run, thus the p-trap is lower than the 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.
Gas in the sewer line is prevented from coming back up into the toilet due to the water seal in the toilet's plumbing trap. This water seal acts as a barrier to block any gases or odors from entering the toilet bowl. Additionally, there are vent pipes in the plumbing system that allow gases to escape through the roof of the building.
Absolutely NOT What is possible (Check local codes) is to install the trap 2 ft from the fixture and the vent 2 ft from the trap BUT if the trap is not easily accessible then your going to have major problems snaking the line
By cutting it out and installing either a P trap or a running trap as an S trap is notorious for losing its seal