Is Wet venting okay?

Wet venting is a plumbing term and is a method of protecting the trap on a drain pipe on multiple plumbing fixtures. It is a useful method of venting and can save pipe and fittings, time and money.

What does wet venting mean?





So what is wet venting? Traditional wet venting is the venting of one or two bathroom groups. A bathroom group includes all the fixtures located within a bathroom, such as a water closet, lavatory, bathtub, shower or bidet. All these fixtures can be vented with a single dry vent.

When can you use a wet vent?

Quote from the video:
Quote from Youtube video: So the section of the vent pipe that is going to be used for the drain is where the wet vent is going to be used as the drainage. Water from the sink enters into the vent for the toilet.

Can you wet vent a floor drain?

909.2. 1 Horizontal wet vent. The dry-vent connection for a horizontal wet-vent system shall be an individual vent or a common vent for any bathroom group fixture, except an emergency floor drain.



Resources.

Pipe Size (inches) Maximum Discharge from Upper Fixture Drain (dfu)
2 1/2 to 3 6

Are wet vents legal in California?

One or two vented lavatory(s) shall be permitted to serve as a wet vent for a bathroom group. Only one wet-vented fixture drain or trap arm shall discharge upstream of the dry-vented fixture drain connection. Dry vent connections to the horizontal wet vent shall be in accordance with Section 905.2 and Section 905.3.

What is the difference between a dry vent and a wet vent?





There are two basic ways to supply air to a drain line: through a dry vent or through a wet vent (if codes allow). A dry vent supplies only air to the drain line, whereas a wet vent functions as both a drain line and a vent.

How long can you run a wet vent?

✔ The maximum run, which is the length from the drainpipe to the vent pipe, is 42-inch for a 1½ trap arm, 60-inch run for a 2-inch trap arm, and a 72-inch run for a 3-inch trap arm.

Can a kitchen sink be wet vented?

The kitchen drain cannot be used as a wet vent.

What happens if you don’t vent plumbing?

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.

What is the minimum size of a wet vent?



2 inches

The wet vent shall be sized based on the fixture unit discharge into the wet vent. The wet vent shall be not less than 2 inches (50 mm) in diameter for 4 drainage fixture units (dfu) or less, and not less than 3 inches (80 mm) in diameter for 5 dfu or more.

What is a vertical wet vent?

The vertical wet vent shall be considered to be the vent for the fixtures and shall extend from the connection of the dry vent down to the lowest fixture drain connection. Each wet-vented fixture shall connect independently to the vertical wet vent. All water closet drains shall connect at the same elevation.

How do you wet vent a toilet and shower?



Quote from the video:
Quote from Youtube video: Well the water closet and shower are vented through the wet fend. The wet vent starts here at the lav. Comes down goes around the corner.

Can I vent a toilet with a wet vent?

Wet vents are typically used when plumbing a bathroom group. 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.

Should roof vent pipe be covered?

The main reason you should consider putting a cap on your vent pipe is to protect it from the debris that can get in during the storm and prevent animals from climbing in. On the other hand, you should always protect your roof vent pipe with a vent pipe cover.

Do plumbing vents have to go through the roof?

It does not have to go through the roof. From the plumbing code (I have the 2003 edition), P3103: It must not be less than 4 feet directly beneath a door, openable window or other air intake of the building or adjacent building.

Does a washing machine drain need a vent?



All plumbing fixtures—including washing machines—must be vented. Improperly vented drains can be sluggish and noisy, and can emit hazardous fumes. Properly vented drains allow the P-trap to do its job: prevent sewer gases from escaping into your home.

What is a horizontal wet vent?

The wet vent shall be considered the vent for the fixtures and shall extend from the connection of the dry vent along the direction of the flow in the drain pipe to the most downstream fixture drain connection to the horizontal branch drain.

How many plumbing vents should a house have?

At least one main vent stack is required for every building that has plumbing when connecting separately to the sewer for the building or its septic tank. The stack has to run the most direct route through open air or be ventilated to extend to open air.

How do you tell if your plumbing vent is clogged?

How to Tell if Your Plumbing Vent is Clogged

  1. A Primer on Plumbing Vents. …
  2. Water Takes A Long Time to Drain. …
  3. Dry and Empty Toilet Tanks. …
  4. Foul Smells. …
  5. Gurgling or “Glugging” Sounds as Water Goes Down the Drain. …
  6. Get Those Clogs Out of Your Plumbing Vent ASAP.



Does every toilet need a vent pipe?

“Does a toilet need a vent?” And the answer is yes, your toilet has to have a vent. For more information on the great importance of plumbing vents, read our plumbing vent article here. And the size of this vent pipe depends on your local plumbing code.