Sink Trap

Sink Trap

The sink trap is a curved segment of drain pipe behind your sink, generally called a P-trap, which performs a lot of dirty work.

Sink Trap
Sink Trap

Over time, they leak, get rusted, or become filled with years of accumulated soap and grease. When replacing a P-trap, you should use the same trap you removed.

S trap

The “s” design could result in a water siphon because it would drain the water that had accumulated in the curve, break the seal, and allow sewage gas to pass through.

S trap
S trap

Because of this issue, s-traps are no longer permitted in the plumbing code, and if you have one, you should replace it.

Traps for all sinks

Using these traps, sewage gases are prevented from entering the residence, and heavy things that have fallen down the sink are prevented from being entirely lost in the plumbing for good.

Sink Trap
Sink Trap

For your house to pass inspection in many locations where the building code mandates that they be placed, you must have a p-trap underneath your sink.


What is the purpose of a trap?

In the plumbing field, a trap is a section of pipe formed like a U and intended to block the undesired passage of liquid or gas. The most common use of a trap is to prevent sewage gases from entering buildings while still allowing waste items to pass through.

What happens if you don’t put a trap on a sink?

A barrier of this kind is required for anything connected to sewage. Certain items, such as toilets, have the barrier already built into them. As a result, sinks need to be stored in the pipe. Further down the line, your buddy will finally experience a blockage in the pipe.

What does a sink trap look like?

The P-trap is simply the bend in the pipe shaped like a P and is located below your toilet and most sinks in your home. You are correct if you imagine the letter ‘P’ resting on its face.

How can I tell if my P-trap is clogged?

If the p-trap is obstructed, water will flow backward through the system. If the water in your sink takes much longer than usual to go down the drain, this is the first indication that your p-trap is blocked.

When the P-trap gets blocked, it is recommended that a small bucket be placed below the trap while the water supply is turned off.

When should I replace my sink trap?

As a result of the fact that an older trap assembly does not always match the new sink layout, it is a requirement of the plumbing code and is often included in the process of installing a new sink.

When different components of a trap begin to rust or when the joints start to leak and cannot be rectified by tightening the connection nuts, it is necessary to replace the complete trap assembly to prevent further damage.

The drain line can go below the sink trap.

You will directly join the p-trap to the drainage system, then move the p-trap’s exits into the drain already in place.

Because water gravity must be used to drive the water out of the p-trap, it is not ideal to have the p-trap located below the exit drain rather than having the water flow downhill naturally.

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