Where is sanitary tee used?

A sanitary tee has a curved center section to allow smoother, more efficient liquid flow. In drainage systems, it is primarily used to connect horizontal drains to vertical drains. The center connection is usually to the pipe leading to a trap.

When would you use a sanitary tee?

A sanitary tee should be used when connecting a horizontal run, such as a waste arm to a vent stack or vertical riser.

Can I use a sanitary tee for sink?

Sanitary tees should not be used in place of drain traps. The trap is an important fixture in the plumbing system. It prevents gases from the sewer system from entering the structure from the sink drain.

What is sanitary tee?

Sanitary tee is a fitting designed to connect a branch line into a vertical drain (or vent) line. All connections are Slip (Hub/Socket).

Where would you use a double sanitary tee?

Double sanitary tees may be used when the barrel of the fitting is at least two (2) pipe sizes larger than the largest inlet. (pipe sizes recognized for this purpose are 2 in, 2-1/2 in., 3 in., 3-1/2 in., 4 in., 4-1/2 in., 5 in., 6 in., etc.)

RVIA Webinar 2019 - Plumbing Drain System: Sanitary Tee Fittings

Can you use a sanitary tee on its back for a vent?

Sanitary tee can be on its back for dry vent, but the vent has to be a vertical dry vent.

Can a sanitary tee be horizontal?

Sanitary tee is used for horizontal to vertical transition, and Wye is used for combining 2 lines into one horizontal line to maintain a flow without causing clogging. Both of these fittings have different usage and can not be switched.

Why is there a tee in a septic tank?

Elaborating: a "tee" or baffle system keeps floating solids from passing out of an opening, allowing just effluent to pass. That's why conventional septic tanks use a tee or baffle at both inlet and outlet ends of the tank - to keep from clogging piping at inlet or drainfield at outlet.

What's the purpose of P trap?

P-traps are U-shaped pipes in toilets and underneath sinks. P-traps hold a small amount of water that prevents sewer gases from rising up into your home.

What is a sanitary elbow?

A sanitary elbow is a kind of sanitary fitting installed between two lengths of pipe or tubing to allow a change of direction. While these corner fittings are usually a 90° or 45° angle, 22.5° elbows are also available. The ends may be machined for butt welding, threaded, or socketed.

Do toilets have to be vented?

“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.

How close does a vent need to be to a drain?

For a 1 ½-inc pipe the vent should be 42 inches away at the most while a 2-inch pipe must have a maximum distance of 5 feet. For pipes that have a diameter of 3 inches the distance is 6 feet and for a 4-inch pipe the most it should be away from the vent is 10 feet.

Can you tee into a vent pipe?

Tying Into a Vent Stack

If the vent slopes up to the main stack, you tie it in with a Y-fitting. If it rises to the level of the connection and proceeds horizontally from there, you use a vent tee, which doesn't have a sweep.

Can sink and toilet shared vent?

A general rule is that you can only vent 2 fixtures on a toilet wet vent. The sink drain has a toilet vent through it. The toilet drain should be 3′′, the sink drain is 1.5′′, the shared sink drain/toilet vent area should be 2′′, and the vent going up should be 1.5′′.

Can you put a 90 in a sewer line?

It's fine to have a larger-radius (sweep) 90-degree bend at the base of a vertical drainage stack where the wastewater starts to travel horizontally. It's also a good idea to have a sweep 90-degree fitting where a drain pipe pops out of a wall for a kitchen, vanity or laundry sink.

Is the Wye different from a sanitary tee?

Although a wye or tee may superficially appear to perform the same job of redirecting flow by 90 degrees, their performance is not the same. In a wye or long-sweep 90 the flow is positively directed in a specific direction. But in a tee there is not a smooth flow transition at the junction.

Does toilet need P-trap?

The water that sits in a trap is what prevents sewer gases from entering a building. The photo below shows a “P-trap”, which is the type of trap you'll find below most sinks, showers, and bathtubs. Toilets have their own built-in traps, and so do floor drains.

Where is P-trap in toilet?

What is a P-trap? The P-trap is a crucial element of the home plumbing system. It is the U-shaped section of the pipe located underneath the sink. Its function is to trap and hold enough water, which acts as a barrier to prevent sewer gases and odors from making their way into the bathroom.

Is P-trap necessary?

A P-trap is required to be installed in most sink, shower, and bathtub drain lines by law. The reason P-traps are so essential is because they retain clean water in the drain line. This water seal stops horrible-smelling sewer gas from coming back up the drain line and into your home.

Do all septic tanks have a baffle?

Every septic tank contains two baffles, one at the inlet and one at the outlet.

Where is the outflow on a septic tank?

Inlet & Outlet Pipes: Wastewater from your home enters the septic tank through the inlet pipe. After the solids settle out, effluent leaves the septic tank through the outlet pipe and flows to the drain field. The outlet pipe should be approximately 3 inches below the inlet pipe.

Can you use a wye for venting?

Absolutely! Most any fitting is perfectly acceptable and legal, just don't use any reducers, caps or traps in the venting.

Can you lay a Wye on its side?

Yes, it is/has been done often. If you can, I personally prefer to put the wye so that the offshoot is angled slightly down into the main run to create a natural direction for flow. The only thing I'd caution you on, if your code is picky about it, calculate your DFUs to make sure it is acceptable.