A P-trap really has nothing to do with draining the water, and a shower or sink will drain without one. However, a sink or shower drain with no P-trap would be a serious health risk. The P-trap is there to trap a small quantity of water.

Which is better S trap or P-trap?

P-traps are generally considered by most to be more effective and consistent in maintaining water trap compared to S-traps. Their design makes them less vulnerable to drying out and losing seal: a properly installed P-trap will never lose its water seal.

Do I need P-trap for shower drain?





Shower and bathtub drain pipes must incorporate a P-trap; otherwise the health and safety of anyone in the building will be jeopardized by sewer gases entering the building.

What kind of trap do you use for a shower drain?

According to regulations, all shower drains are required to have P-traps. This includes all fixtures connected to a building’s main plumbing system. P-traps are curved pipes installed under showers and drains of all kinds.

What can I use instead of P-trap?

4 Alternatives of P-trap in The Shower

  • Alternative 1: HepvO Waterless Valve.
  • Alternative 2: Bottle Trap.
  • Alternative 3: Grease Trap.

How far can P-trap be from shower drain?





The maximum distance between the shower drain and the P-trap is 5 feet. However, the P-trap should be as close to the shower drain inlet as possible. You should even have the P-trap directly under the shower drain for the best results.

Why does my shower smell like sewer?

Leaky Pipes

One of these issues is leaky pipes. Leaky pipes in your bathroom walls or under the shower will allow sewer gases — also known as hydrogen sulfide — to escape, so you may notice the shower drain smells like rotten eggs or sewage.

Do bathtubs need P traps?

P-traps are S-shaped pipe components that keep toxic sewer gases from escaping into your residence. They are required on all plumbing fixtures, including sinks, tubs and showers. Toilets have built-in traps. Sink P-traps are usually accessible after installation, and are designed to be easily taken apart.

Is AP trap necessary?



Plumbing codes require a P-trap be installed anywhere there is an open drain line that expels wastewater into a drain waste-vent system. The P-trap traps solids that can clog the drain or sewer line. The P-trap stops sewer gases from backing into your home through the drain line.

Does a shower need a vent pipe?

Vent Pipe Requirements for Showers

It’s easy to forget, but it’s a vital and required part of any plumbing fixture drain. The vent pipes remove sewer gases while allowing air into the system to help the water drain. Without a vent, your shower won’t drain correctly.

Can a toilet and shower share the same vent?



So yes the shower can also be vented by the wet vent along with the toilet. There is one major stipulation when wet venting multiple fixtures when a toilet is one of them: the toilet must be the last fixture connected to the wet vent.

What happens if you don’t vent a shower drain?

Poorly-vented drain lines will not be able to effectively move wastewater and solid waste out of your building. This could lead to problems such as overflowing drains, backed-up toilets, and similar plumbing issues.