Questions tagged [plumbing]

For questions about the supply and removal of water and liquid waste.

694 questions with no upvoted or accepted answers
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4
votes
1answer
109 views

Why does sink gurgle after installing AAVs in attic?

I recently installed Studor Mini-Vent air admittance valves (AAVs) in my attic on the two secondary (2 inch) plumbing vents (serving laundry room and kitchen) so that the vents no longer penetrate the ...
4
votes
1answer
783 views

Can a vent be started from a wye?

Is it ok to start a vent on a 45 from a wye like on this drawing? I need to clear the edge of the sink (actually a giant double compartment sink) before I can go up and start horizontal once I clear ...
4
votes
1answer
339 views

Should drop ear elbows be used with CPVC supply lines?

When running CPVC supply lines for a sink, how should they be anchored before popping out of the drywall? I know with copper you can use drop ear elbows which are mounted to a backer But with CPVC ...
4
votes
1answer
895 views

Can we install an aeration unit in an older septic system?

Our home was built in 1957. We have had problems for years with having a wet drain field and keep having our septic pumped. Today (of course my husband is away), I have done a couple of loads of ...
4
votes
1answer
64 views

How to seal straight-thread faucet shank / nipple to the faucet?

I have a faucet which requires installation of a separate threaded 'shank' or nipple which acts as both the water supply inlet and also is used to anchor the faucet to the sink deck. These are ...
3
votes
1answer
150 views

Can Someone Help Me Identify This Switch?

I have a Swaby 5200 pump in my home, and I am hoping that someone out there might be able to suggest a replacement switch part number – or at least point me in the right direction. Pump model: 5200 ...
3
votes
2answers
82 views

Is there any reason that plumbing can't be adjacent to a heating/cooling duct?

I'm installing a utility sink and the only place to put the plumbing (if it's going to be right under the sink) is either directly behind or infront of this vent... Is there any reason not to put it ...
3
votes
1answer
323 views

Irrigation backflow preventer spigot location question.

I'm not sure if this is the right category to post this so here goes. Long story short I am getting ready to install my backflow preventer, Zurn 34-720A Wilkins Pressure Vacuum, on my DIY irrigation ...
3
votes
1answer
1k views

Should I replace my trunk-and-branch setup with a PEX manifold?

My house is plumbed using PEX trunk-and-branch, with the main 3/4 line coming in, splitting off to 3/4" to the hot water tank, and then a 1/2" trunk that all the other branch supplies tee off from. ...
3
votes
1answer
152 views

How and can you increase the flow volume for a tub faucet?

We recently built around a 1000 sq ft addition onto our house. The existing home had one or two additions to it prior since the main part was built in like 1930 something the plumbing is the regular ...
3
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1answer
2k views

Removal of drain extension pipe at the wall under bathroom sink

I'm replacing the drain pipes under my bathroom sink and having trouble removing the final section behind the escutcheon that connect to the wall fitting. I have a metal pipe extension pushed into a ...
3
votes
1answer
1k views

What are the practical differences between 1/2“ and 3/4” pipe between a water softener and water heater?

I purchased a WaterBoss ProSeries water softener and plan to install it immediately before my water heater as described in this post. The instructions for the water softener indicate that 3/4" pipe ...
3
votes
3answers
2k views

Vacuum Breaker Valve on Hose Bib Humming / Noise

I have one of these vacuum breakers on my outdoor hose faucet. Every time I turn it on, it creates a loud noise in the form of a hum or drone I can hear throughout the house. While I have been able ...
3
votes
1answer
519 views

Do I need to angle/pitch pex tubing for draining in the winter?

I've never installed any plumbing before, but I'm going to try to install an outside faucet/sillcock because it seems fairly simple. The only interesting part is that the pex tubing will be run under ...
3
votes
2answers
11k views

Why would I have hot water at one faucet but not the others?

I recently installed a new electric water heater and now I only get hot water to one faucet at a time. The kitchen faucet is closest to the heater with the bathrooms being the furthest. when i turn on ...
2
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0answers
30 views

Installing bathroom in basement

starting plans for a raised bathroom in my basement . I have ben looking on Google. YouTube etc. To figure out how to plumb the bathroom. Since I will not be breaking out concrete. How would I attach ...
2
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0answers
40 views

Should I put a cap on this pipe?

Underneath my kitchen sink you can see the following: As you can see, the spout (is this the correct term?) has kitchen roll stuck in it. Isn't this suppose to be sealed with a cap? Doesn't it run ...
2
votes
0answers
49 views

How to adjust tub water level with standing waste stopper?

I have an old tub with a standing waste stopper. When the drain is closed, if the water level gets too high, it automatically drains down to a fixed level. That level was 3/4 of the tub depth, until ...
2
votes
0answers
44 views

Is PEX very susceptible to damage from rats/rodents?

A friend of mine wants to re-plumb his house. The neighborhood has recurring issues with rats. I heard rats like to (as in "seek out opportunities to") chew through and damage PEX plumbing, whether ...
2
votes
0answers
62 views

Are bends allowed in a toilet drain above the 4x3 reducer?

I am finishing my basement, which was roughed in by the builder, but I need to move the toilet, since I lost 8" of wall framing in front of the main sewer line, the vanity would be stupidly narrow, to ...
2
votes
0answers
38 views

Corrosion due to dissimilar metals or bad ground?

I'm a 1st time home owner but experienced DIYer here. Unfortunately I have little plumbing experience. I installed a hot water recirc. pump at my hot water heater about a month ago. I did not notice ...
2
votes
1answer
97 views

hot / cold copper water pipes located above main electrical panel

The Pipes are about 7.5 feet above the basement floor. I am in Canada. . The pipes are about total 2 feet in vertical length as measured from the 90 degrees turn from the basement, popping up the ...
2
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0answers
37 views

Copper to CPVC transition fittings : allowed by code to be used inside a wall?

Does the Uniform Plumbing Code (US) allow copper-to-CPVC transition fittings to be used inside a wall? Just to be clear, I'm referring to the hybrid fittings that are part brass, part CPVC.
2
votes
2answers
45 views

Hot water flow — to one sink — low and getting worse

I've seen variations on this question, but the only times I've seen this exact question, the answers haven't been helpful... so thought I'd try here. I've got a 66 gal. electric hot water tank, 10-15 ...
2
votes
2answers
67 views

How are mixing valves installed? Do they affect just the hot water line?

How are mixing valves installed? Do they affect just the hot water line? So my basic understanding is that the valve connects inlet to hot and cold, but outputs only hot and you set it to your ...
2
votes
0answers
277 views

Why do I have low hot water pressure in showers only?

I have 2 showers in my house. Suddenly the hot water pressure dropped in both. The cold is fine and we haven't noticed any change in the faucets in the house. What could make my hot water pressure ...
2
votes
2answers
44 views

Intermittent low pressure natural gas to outside grill

I have a Weber S-670 natural gas grill. For the last couple of months, the grill will not heat up after dark, when temperatures are lower. During daylight hours and higher temperatures, the grill ...
2
votes
0answers
336 views

New bathroom double vanity. One sink runs the other backs up and drains slow

So when I run either sink for a minute the other fills and they both drain slow. Is it the trap height and/or a clog in the old line or something else. Noob here n looking for help. Thanks
2
votes
2answers
81 views

Need help identifying my frost free outdoor faucet

I have leaky weep holes so it is my understanding that I need to replace the washer on the valve assembly on the end of the stem assembly. The screw at the end of the valve assembly on the end of the ...
2
votes
2answers
414 views

Sanity check on hot water line for dishwasher installation where there wasn't one before

Here's how the sink currently is hooked up: Rear shut off valves: Front hookups to sink: The approach I was looking at - after significant confusion at home depot (I'm honestly still a bit confused)...
2
votes
1answer
269 views

Is 1/2" flexible gas pipe adequate for a 22000 BTU clothes dryer?

I have 1” black iron pipe running just shy of 40’ to a manifold. The manifold then has one run of csst coming off it to my furnace. I then have 4 more ports I can run off for new appliances as I ...
2
votes
2answers
648 views

Can a clogged toilet drain cause a tank overflow?

This is less of a "how do I" question and more of a general knowledge check. Recently I've been having trouble with an overflowing toilet. Fortunately for me (in this situation), I'm a tenant and ...
2
votes
0answers
3k views

What is this black/brown chunky sludge in my sink?

I woke up this morning to a foul-smelling, black/brown gunk that had appeared in my bathroom sink overnight or the previous day. It doesn't look like a slimy mold like many questions seem to be, ...
2
votes
0answers
580 views

Chemical Smell After Tankless HWH Install

I recently had a plumbing company install a tankless hot water heater in my crawlspace. Everything with the install works and looks great, but we are experiencing a very strong chemical smell (like ...
2
votes
0answers
156 views

Is a 4" double wye on a toilet drain legit?

I'm moving a basement bathtub drain and would like to tap into existing lines to accommodate a 2" upstairs laundry drain and prepare for another potential drain to accommodate an outside entrance ...
2
votes
0answers
480 views

New kitchen sink - not draining properly - could it be the way plumber connected pipes?

A plumber just installed my kitchen sink, however, it is not draining properly - it will overflow after just a few seconds. Im thinking there isnt enough pressure forcing the water down due to the ...
2
votes
1answer
41 views

Correctly clean filter in draining pipe

It looks like the washing machine draining pipe is clogged. The pipe contains a component which I never saw before (see picture). Is it some kind of filter? If so, does it have a technical name and ...
2
votes
0answers
56 views

Running Water through Air Injection Softener with no power

Im in no way a plumber so forgive me if this is a silly question. I am on a well water system with an air injection softener. Last night, the circuit breaker its on shorted out. Im really at a loss ...
2
votes
0answers
67 views

Can I keep my outbuilding's 10a classificaton

This question is specific to Victoria, Australia. I have an old (1945) 6m by 7m outbuilding (basically, a small barn) on my property, and I would like to run mains electricity and water down to it so ...
2
votes
0answers
55 views

Spacing of underground pipes with differing freezing points

I need to run a variety of electrical and plumbing from my house several hundred feet to the site of my future pool and pool shed. Included in this is geothermal piping, connecting my house geothermal ...
2
votes
1answer
385 views

When designing plumbing, what is the most efficient way to pump water to a roof?

I am planning to pump water to the roof of my house in order to cool a solar panel array during warm days. I'm trying to determine the best way to route the water as the water source is on one side ...
2
votes
0answers
249 views

How can I find a hidden water consumption source? UPDATED

After replacing a flapper valve in my leaky toilet, I made note of my water meter reading and went on vacation for a week. On return I found that I had used 100 gallons of water, about a half ...
2
votes
0answers
163 views

Possible cross over issue with water lines

About 2 weeks ago our hot water started getting less and less hot, now it is completely cold. If I turn the cold angle stop off at the sink, so only the hot water line can feed the faucet, and turn it ...
2
votes
0answers
153 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 ...
2
votes
0answers
212 views

drainage problem from kitchen sink

My kitchen sink(double sink) backs up, there is no clog I have removed the trap, I have also removed the basement trap and snaked both ways. Now the bathroom sink will also backup at same time, so I ...
2
votes
0answers
408 views

How to remove this kitchen faucet cartridge?

I haven't been able to determine the make/model but doing some research it looks like possibly Pfister. Either way, the cartridge part is sticking and handle is very difficult to use. I am trying to ...
2
votes
0answers
335 views

How can I install a faucet bidet if my faucet doesn't have a removable aerator?

I really want to install Aquaus Handheld Bidet for Faucet in my bathroom, but I have one of those faucets that have inner temper-free aerators. It is not like ordinary screwing type aerators. I have ...
2
votes
0answers
228 views

how do i plumb this rough-in?

The future bathroom in my basement has been roughed-in by the builder. Spot where the tub / shower goes was covered over by a square plastic tub (a "dap-out", if the spelling I see online is correct). ...
2
votes
0answers
617 views

Need to unstick stuck shower divider valve

The shower divider value (which chooses between letting water flow into the tub or up into the shower) is stuck. I can't spin it with the installed plastic handle. Here's some pictures: With the ...
2
votes
0answers
180 views

Thermostatic Shower doesn't give cold showers? Normal?

I have recently purchased a home with a Thermostatic shower and when at the coldest setting the water was hot. I did some researched and changed the temperature cartridge and now the water is warm. if ...