sanitary tee for vent connection

Nelsonba

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• Nov 10, 2007

• #1

Can a sanitary tee be used to connect a horizonal vent stack to a horizontal vent run? If so, which way should it be positioned? Curve pointing up or curve pointing down?

 

Winslow

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• Nov 10, 2007

• #2

nelsonba said:

Can a sanitary tee be used to connect a horizonal vent stack to a horizontal vent run? If so, which way should it be positioned? Curve pointing up or curve pointing down?

Click to expand...

do you mean a horizontal run to vertical (stack)? By code 2 vents can tie together as long as you are 6" above the flood rim of the fixture(s) being served. The tee would be positioned so the curve being down ( or upside down). Imagine something flowing down the pipe from the roof, the tee would be positioned to direct the flow from the roof to the drain pipe on the side outlet of the tee.

 

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Nelsonba

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• Nov 10, 2007

• #3

Which way?

Vent for a sink would tie into the horizontal outlet to a vertical vent for a shower (6" above fixture trap).

Would it be the first or second picture?

 

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BAPlumber

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• Nov 10, 2007

• #4

I'm not really following what your saying. But, as water drains out, air should flow in (sort of) to equalize pressure. The vent fittings should be oriented to allow for the smooth flow of air.

read this: https://terrylove.com/forums/showthread.php?t=15433&highlight=revent

 

Last edited: Nov 10, 2007

Markts30

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• Nov 11, 2007

• #5

The branch should "flow" from the horizontal smoothly up out the end of the vent pipe..
Second pic gives the correct orientation....

 

hj

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• Nov 11, 2007

• #6

tee

It is a philsophical concept, since air doesn't care about "sweeps", so even a square vent tee is acceptable. The sweep is more to conduct moisture to a drain point.

 

Markts30

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• Nov 11, 2007

• #7

I understand that HJ but it is the concept I was talking about...
I just find it easier to explain to new people that "sh*t flows downhill and farts flow uphill"...
At least it gives the new apprentices a fighting chance on getting the vent fittings the right direction...LOL