Plumbing Traps – What Are The Different Types Of Traps?


What Is Plumbing Trap?

A plumbing trap is a simple shape-bending pipe device that permits waste to pass through. It also holds fluid to prevent sewer gases from entering the structure. In most household applications, U, J, Q, or S-shaped pipes are found just beneath or within a plumbing fixture.

A P-shaped plumbing trap, on the other hand, is the most popular choice.

There are several different types of plumbing traps on the market.

Plumbing is a type of activity that is mostly concerned with sewage disposal and water supply. The plumbing pipe framework will remain odorless as long as it is properly planned and installed. The highlights of a plumbing trap are as follows:

It could be built into the machine as an essential trap, as in some European WC models, or it could be a separate fitting, termed a “linked trap,” which is connected to the waste or foul water output of apparatuses.

The traps should include a self-cleaning feature. Cleaning traps for use with homegrown trash should be useful. In all phases of a stream, a good trap should preserve an excellent water seal.

Plumbing traps retain a small amount of water and are located beneath or inside pipe equipment. Holding water makes a water seal, which stops bad gases from getting into the structure of the channel pipes.

As a result, traps are installed in all pipe systems, such as sinks, washbasins, baths, latrines, and so on. This page explains the benefits of traps, as well as the various types of traps.

Trap Types in Plumbing

The following are the various types of traps used in plumbing:

Gully Trap
P Trap
S Trap
Q Trap
Floor Trap / Nahni Trap
Bottle Trap
Intercepting Trap
Running Trap
Drum Trap
Straight-Through Trap
Low-Level Bath Trap
Building Trap
Bell Trap
Grease Trap


Gully Trap

These plumbing traps are erected outside the structure to carry wastewater from sinks, washbasins, restrooms, and other sources and are connected to the nearest building drain or sewer so that sewage gases do not enter the home. These are substantial seal traps.

The depth of the water seal should be at least 50 mm. It also keeps cockroaches and other bugs out of sewage lines and squander pipes that transport wastewater. Gully traps can be found in three different shapes:

P Trap

This trap is used in conjunction with the Indian toilet (ORISSA Pattern). Cast iron or UPV sheet is used to make the traps. This trap also features a water seal, which prevents some bad gases from entering the house.

Q Trap

In the latrine submerged storage chamber, these plumbing trap kinds are used. It’s almost like an S trap, and it’s employed on the upper stories instead of the ground.

S Trap

This sort of plumbing trap resembles a P-shaped trap and is used to repair water closets in latrines. The only difference between the P trap and the S trap is that the P trap is used for outlets through the wall, whilst the S trap is used for outlets through the floor.


Floor Trap | Nahni Trap

The floor traps are also known as Nahni Traps.By providing a water seal, the Nahni Trap prevents filthy vapors from entering the structure.

A water seal with a depth of at least 50 mm should be provided. If there is waste water, the floor trap stops bad smells (bad gases) from getting into the house.

A floor trap, also known as a Nahni trap, is installed in the floor to collect wastewater from the bathroom, wash zone, washbowl, and kitchen sinks, among other places. Floor traps come in PVC, UPVC, and CI. They don’t have a vent pipe, but detachable grinding can be seen at the top of the traps.

Floor traps, also known as Nahni traps (Nahni means “washing area”), come in a variety of shapes, sizes, and outlet configurations. Many people don’t have a water seal by any stretch of the imagination, and their bore is uneven and unpleasant.

Because of their helpless planning, projecting, and inadequate quality, Nahni traps are a wellspring of huge spillages. It is possible to avoid this by only using deep-sealing P traps with multi–gulf fittings and traps with connections from washbowls and other fittings to provide a positive junction.

Because of dissipation, some plumbing trap kinds introduced in the regions may lose their water seal. A plan should be devised to restore the seal by supplying water on a regular basis. This should be feasible by connecting the trap to a waste disposal system (for example, a washbowl, and so forth).

Similarly, recharging is achieved by installing a refined water supply valve in conjunction with a reverse avoidance device on the trap. Preventing the formation of traps that are exposed to freezing temperatures requires caution.

The length of the floor trap is 310 mm, with a minimum width of 80 mm at the channel end, 30 mm near the outlet end, and 73 mm outside the floor trap outlet. Furthermore, with 8 mm measuring apertures, 95 mm of grinding size provided the highest point of the floor trap.


Bottle Trap

A bottle pumbling trap is provided to collect waste from washbasins, kitchen sinks, and other equipment that lacks an underlying trap.

Intercepting Trap

The types of plumbing traps that can be intercepted are presented to the interceptor manhole (interceptor chamber). At the intersection of the building’s sewage and the public sewer, an interceptor sewer vent is supplied. By providing a water seal, this blocking style of trap keeps filthy gases from public sewers from entering the building sewer.

Grease Trap

A grease trap is installed in at least one installation’s waste line to separate grease from the fluid and store it.

This type of trap is a device that collects waste grease and may be scraped off the surface. This is typically used in the food preparation area.


These are all examples of plumbing traps. They come in a variety of materials, including PVC, GI, and others.

Although the aforementioned types of traps are widely used in pipework, optimal pipe traps have the following features or advantages:

Protection against the harmful effects of household substances

Stop bad air, insects, and parasites from entering the sewers.

It is anti-rat as well as self-cleaning.

Use the right and greatest kind of plumbing traps if you want your home free of unpleasant odors, bugs, and parasites. This is not only presented efficiently and fast, but it also puts less strain on your wallet.