Drain waste vent system

learn more… | top users | synonyms (1)

1
vote
3answers
536 views

Installing new soil pipe

I'm moving my bathroom to the adjacent corner in my house, and would like to know if I need to vent my soil pipe with my planed system before it reaches the existing external soil stack. Going ...
2
votes
2answers
566 views

How vent bathtub trap when drain is routed under tub, directly away from best vent location?

I am … very slowly … thinking about replacing the probably circa 1950's galvanized steel drain pipes in my basement with PVC. In particular, I would like to replace the drain line under ...
1
vote
2answers
93 views

Manifold all vent pipes in attic to have one pipe into roof

I'm building a new house, 2 1/2 baths, laundry room & kitchen. What size vent pipe would be needed to manifold all vents into one?
1
vote
1answer
80 views

Pre-made rain cap for plumbing vent? (Preventing rust-through of galvanized pipe in the walls)

Are pre-made rain caps made for plumbing waste vents? My house was built 1938 with galvanized DWV pipes which have a series of elbows before reaching the roof. All such elbows retain a certain amount ...
2
votes
0answers
64 views

What's so bad about single stack DWV systems?

We're in a region which allows single stack DWV installations in multi-storey buildings. In other words, a single large-diameter vertical pipe that serves as both discharge stack and vent for several ...
1
vote
0answers
47 views

Are drain-clearing bladders safe?

I advised a friend to use a drain bladder to clear a sink clog. Turns out there was a vent that didn't connect to the main vent stack--it just terminated inside the wall. So she put a bunch of water ...
1
vote
0answers
57 views

Why does the Hartell Reservoir style pump require no venting, while the Little Giant Drainosaur does?

Why does the Hartell Reservoir style pump require no venting, while the Little Giant Drainosaur does? See links below for more info on pumps Hartell Pump Little Giant I am having a hard time ...
1
vote
0answers
122 views

Would you trust this PVC drain joint?

This is a joint for a 2" elbow underneath a unit-shower (in Japan.) The elbow is a special type which is clear, and using a blue glue shows the glue line so you can insure you have a good joint. An ...
1
vote
0answers
503 views

How can I connect dishwasher waste pipe to sink waste pipe?

I moved in recently in our new home and when we put the dishwasher on a gush of water appeared on the floor. I turned off the dishwasher and took a look under the sink to find the waste pipe was ...
1
vote
0answers
201 views

Is this the vent?

Below is an image below my kitchen. The drain for the sink. I can hear the water run through it Junction Connects to the 3" main drain Is this a vent? I don't hear any water going through it and I ...
0
votes
0answers
60 views

Water level in kitchen sink drains is too high

The water level in both kitchen sink drains is close to the top. I can use the garbage disposal and other drain and the water drains out quickly but backs up slightly when the opposite drain is used ...
0
votes
0answers
58 views

Is this a proper way to connect main vent?

I'm researching the way to properly re-plumb my 2 bathrooms, and trying to figure out the best way. Specific question relates to this section of the code (Illinois 890.1450 e): All main vents or ...
0
votes
0answers
219 views

Back-to-back toilet problem in old house: replumbing to code

I have a 50 year old house, with some outdated plumbing that is causing me problems. (See this for specific problems) And here's the existing connection: I will be doing some bathroom work, and one ...
0
votes
0answers
106 views

Bathtub Overflow Works Only After Overflowing Tub

I have a strange problem with a new acrylic tub with a narrow slit overflow line built into the tub. Both the drain and overflow line appear to be clear and the vent stack checks out as well. I'm ...
0
votes
0answers
635 views

Why won't my toilet flush?

A sewage pump in my basement is 7 feet from the shower drain and 2 feet from the water closet. The only vent is from the sump pump which runs 20 feet horizontally to an outer wall then goes ...