2. What is a plumbing trap?
• A trap is a depressed or twisted connection that is installed in a
drainage network which maintains a water seal by always remaining
full of water.
3. Why do we install plumbing traps?
• To create a barrier in the drainpipe that prevents sewer gas from
rising back up through the drain and into the house.
• To prevent insects, bacteria, and pests from entering the structure
through the drain pipes.
5. 1. Gully Trap
• These plumbing traps are built external to the building to carry
wastewater released from sinks, washbasin, restrooms, and so on,
and are associated with the most nearby building drain or sewers so
that foul gases from the sewer don’t go to the house. These are
profound seal traps.
6.
7. • Advantage
• Prevents entry of pests from sewer line to waste pipes
• Disadvantage
• Blockages and overflow are common issues due to waste food,
grease, fats, oils, tea and coffee residue.
8. 2. P Trap
• The most common type of plumbing trap.
• This trap likewise has a water seal and forestalls a section of foul
gases to the house.
9.
10. • Advantage
• Small items dropped into the sink can easily be retrieved through
disassembling this type of trap
• Disadvantage
• When not properly installed, these traps can leak toxic sewer smells
into the structure.
11. 3. Q Trap
• These plumbing trap types are utilized in the latrine submerged
storage room.
• It is practically like an S trap and is being used in the upper story
rather than the ground floor.
12.
13. • Advantage
• Maintains the minimum required water seal.
• Disadvantage
• Only installed in the upper storeys
14. 4. S Trap
• This plumbing trap types are like a P-shaped trap and is utilized for
fixing water closets in latrines. The lone contrast between the P trap
and the S trap is that the P-shaped trap is being used for an outlet
through the wall while the S-shaped trap is utilized for an outlet
through the floor.
15.
16. • Advantage
• serves as a filter for debris and other objects that might stop
wastewater from flowing through your sewage pipes.
• Disadvantage
• The tendency of water seal being siphoned through, so sewer gasses
enter the structure.
17. 5. Floor Trap | Nahni Trap
• the floor traps are additionally called Nahni Trap. Nahni Trap is given
to forestall the foul gasses going into the building by providing the
water seal.
18.
19. • Advantage
• prevents entry of bugs and insects from entering the home through
the sewer line.
• Disadvantage
• Blockages that occur due to hair, soap scum, and hard water.
20.
21. 6. Bottle Trap
• A bottle plumbing trap is given to get squander from washbasin,
kitchen sinks, and different machines where the apparatuses don’t
have an underlying trap.
22.
23.
24. • Advantage
• Prevent foul gases from entering your home. A more modern and
aesthetic appearance.
• Disadvantage
• It is not self-scouring, leaving behind waste and debris in the bottle
portion
25. 7. Intercepting Trap
• A trap that is installed at the point where the building drainage enters
the public sewer or the septic system.
26.
27. • Advantage
• Prevents the entry of foul gasses from public sewers into building
sewers
• Disadvantage
• Prone to deterioration and damage through ground settlement and
roots.
28. 8. Grease Trap
• A grease trap is introduced in the waste line from at least one
installation to isolate grease from the fluid and hold it.
• Utilized in major hotels, cafes and companies where substantial
amounts of greasy waste are expected to enter the water supply.
29.
30. • Advantage
• Collects and therefore reduces the amount of fats, oils and greases
that enter the main sewers.
• Disadvantage
• When not maintained properly, the occurrence of clogs, blockages,
and overflow are likely, as well as rotten smells in the kitchen and
dining area
31. 9. Running Traps
• Running traps (or building traps) are traps located in the drainage
piping that are not directly connected with a fixture. These traps
were designed to prevent sewer gases from entering the house.
32.
33. • Advantage
• Seals off condensation gasses from entering the living space
• Disadvantage
• Tend to become clogged or obstructed and lead to corrosion, as this
trap has no cleanout.
34. 10. Drum Traps
• Their primary purpose was to keep large, heavy debris from getting
stuck in your plumbing. They were common for many years and can
still be found in older homes.
• Classified as a water seal device.
35.
36.
37. • Advantages
• Higher resealing quality then P-trap
• Greater amount of water may pass through in a shorter interval without
the danger of trap seal loss.
• Disadvantage
• Large and cumbersome
• Unsightly
• Depending on type, cleanout is placed inconveniently
• Not self scouring
38. 11. Straight-through trap
• An alternative valve works on the simple principle of using an internal
membrane as a seal. The membrane allows water to flow through it
when the water is released, then closes to prevent foul air from
entering the building.
• When there’s not enough room for a trap
• More concealabale
39.
40. • Advantage
• Air is drawn through the valve and not the water seal
• Much quieter discharge
• Disadvantage
• The two tight curves in this design slow the flow of water.
41. 12. Low-level (bath) trap
• A low-level trap is suitable for a tight space under a shower and bath
tray.
42.
43. • Advantage
• Prevents the odor from the manhole from re-entering the room
through the pipe
• Disadvantage
• May not be compatible with all vent stacks
44. 13. Building Traps
• A device, fitting or assembly of fittings installed in the building drain
to prevent circulation of air between the drainage system of the
building and the building sewer.
45.
46. • Advantage
• Prevent circulation between the building drainage and building sewer
• Disadvantage
• Outdated plumbing devices and have caused many plumbing
problems in old homes
47. 14. Bell Trap
• A bell trap utilizes a basin with a bell-shaped component that fits over
the vertical drain pipe. Combined, these components are designed to
maintain a water "plug" that prevents gases from passing around the
trap
53. • Dried-out trap: If a drain isn’t used for a few weeks (this can happen
in guest bathrooms), the water in the trap dries out. Sewer gas will
start to escape. Pour water down the drain for a minute to restore
the water plug.
• Clogging: The plumbing trap, unfortunately, is a prime spot for
objects to become stuck and create slow drains and clogs. Simple sink
plungers often can’t fix these tough clogs
