Show activity on this post. Around here the answer would be no. Our plumbing inspectors won’t pass drain installations where a connection to a common drain line comes before the vent. The one exception would be the toilet, which can be wet vented to another fixture.

Can a wye be used for a vent pipe?

Ans: Wye can be used on the horizontal venting of the shower, tub, or lav. Sometimes, it is required for venting if someone wants to use that as a drain, if in any case.

Where can I use double wye fitting?

A double-wye fitting may be used in horizontal drain lines. The use of 1/8th bend elbows at the outlets of the double-wye fitting to form a double-combination pattern is acceptable.

Where should vent pipe be located?

Vent pipes must be installed so they stay dry. This means that they should emerge from the top of the drainpipe, either straight vertically or at no less than a 45-degree angle from horizontal, so that water cannot back up into them.

What is a double wye used for?

Double Wye HxHxHxH

Installed in a vertical PVC DWV piping system to allow for a smooth transition from two horizontal branch lines into the vertical drainage line. Often used with a threaded fitting cleanout adapter and plug, to allow access to the piping system.

Can a wye be installed horizontally?

Bookmark this question. Show activity on this post. IPC TABLE 706.3 “fittings for change of direction” says wye is okay for horizontal to horizontal.

When can I 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.)

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 I use a sanitary tee for a vent?

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

Where should you not use sanitary tees?

Why can’t a sanitary tee be used for a horizontal-to-horizontal drain pipe connection? A horizontal tee is not a problem for pressurized water supply piping, but will not function properly for horizontal drain pipes, which only flow by gravity and need a directional nudge at corners.

What is the difference between a sanitary tee and a vent tee?

A sanitary tee is a plumbing fixture that allows liquids to drain while also allowing the plumbing system to vent. The fitting resembles a normal tee fitting; the sanitary tee, however, when viewed from the side will have a definite downward sweep to the center inlet.

How far can a toilet be from a vent stack?

6 feet

According to the UPC, the distance between your trap and the vent should be no more than 6 feet. In other words, for the vent to work properly, it needs to feed into the drain line within 6 feet of the trapways that connect to it.

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.

How far can vent be from P trap?

trap, the distance from the weir of the trap to the vent pipe opening “shall not” exceed 30 inches.

Can plumbing vents have bends?

Plumbing vent pipes are used to allow fresh air into the plumbing system and help the other drains in the house work properly. This means that there are bends or connections in the other piping and this piping needs to attach to the venting system.