9

A huge disadvantage with PEX is that it is semi-transparent. If your water supply has nutrients in it and the PEX is installed so that light will get to it, you will find that algae (green), bacteria (black, orange or yellow) will grow inside it. It sloughs off in long, stringy goop similar to the biofilm that grows in diesel tanks that haven't been treated ...


9

Sometimes we put in up stubs, they fill with air and act as a surge arrestor (helps to reduce pipe chatter).


7

I'm guessing it's plumbing, not conduit. Unless you actually see wires running through the tubing, I'm not convinced it's conduit. In the US only certain types of conduit are listed for use, and I'm sure they are similar in Canada. Copper is not among those listed, so it's not likely it would be approved by an inspector. In a comment you mentioned that the ...


7

Is the manifold 3/4? If you have easy access to do it, then you are correct that now is the time to do it.


5

Yes, it's possible to bench solder, and in fact you should generally avoid soldering on an assembled threaded assembly. "Oven soldering" is a completely absurd approach to plumbing. Save it for your SMT electronics projects. If you are very uncomfortable about soldering, just use threaded pipe (steel, brass, stainless steel...) and threaded fittings.


5

My understanding is that plumbing flux is more aggressive (acidic) and will damage electronics, but that you can go the other way and use flux-core solder on plumbing in a pinch. A few caveats: Electrical solder is often a softer alloy, so it won't withstand pressure as well. Definitely flux the pipe fittings as you normally would. You won't get good ...


5

That fitting is called a union, it was installed to allow for the T&P and/or the entire water heater to be replaced without needing to cut and resolder the relief valve discharge line. As for the order of operations during initial installation, there really is no way to tell for sure. Assuming the discharge line exits the utility area where the heater ...


5

I would not paint the copper. If you ever need to repair it, paint would be one more problem on making a good leak free connection. If you want to cover the pipe, use foam. Remember, copper water supply’s are quite common direct burial, the sun and elements won’t hurt it. I suggest insulation, if in a location that the temps drop below 27°F. (Yes water ...


4

There are many examples of building products that claimed to be "the wave of the future" and turned out to be utter failures, sometimes dangerous. (polybutylene plumbing, aluminum wiring, and asbestos building products to name a few.) Despite the manufacturer's glowing claims, the actual long-term characteristics and behavior of PEX tubing cannot yet be ...


4

Fewer points of failure Bending results in fewer high risk failure points. A continuously bent pipe has 2 high risk failure points. Whereas a similar length of pipe made with a bunch of fittings, has 2 high risk failure points per fitting. Quieter Bending a radius will provide less resistance within the pipe, so water will flow smoother. In a pressurized ...


4

My sink has a hot faucet on the left side of the sink. It also has a cold faucet on the right side of the sink. If you want warm water, you have to mix it in the basin. If every faucet in your house is this way, then your problem is impossible. However, I suspect you have a valve newer than 1930, with a single spigot. Which means there is a chamber ...


3

SharkBite® only officially supports 4 types of pipe, according to the FAQ Q: What types of pipe can SharkBite fittings be used with? A: SharkBite fittings are certified for use with: Copper pipe hard drawn Type K, L and M and annealed Type M not to exceed 3/8 nominal, complying with ASTM B88 PEX pipe complying with ASTM F 876 or CSA B137.5 CPVC pipe ...


3

You may notice a rotten egg odor from the water from time to time if the sulfur content is high enough. Bacteria in the water convert sulfur compounds into hydrogen sulfide which reacts with the copper to form a coating of copper sulfide. There are no set limits on how much sulfur can be in the water. It's naturally occurring and not considered to be a ...


3

With pex pipe you just need shark bite fittings . Don't require special tools for installation.. shark bite fittings are considerable more expensive than others but you can fix a leak without ever turning the water off if you like


3

We had blue water coming out of our bathtub faucet for a number of months. I talked to people at our local plumbing company. They had no answer. I gave up searching the blogs on the internet. This is what I did to solve the problem. Our gas hot water tank was almost 15 years old, past it's useful life. I bought a new tank. I first removed the cold water ...


3

There are products sold for your specific issue. Check your local hardware store or home improvement center for CLR (Calcium-Lime-Rust) cleaner. CLR is a specific brand name but there are many formulations of similar products available.


3

All depends on you. You can cut the pipe with a hacksaw, Sawzall, a copper tubing cutter like these: You might have to cut a length of pipe out to fit your valve. You could also use a piercing valve. I don't endorse these products although good.


3

When to use a pair of 45° versus one 90°? Most in the construction trades work according to these guiding principles: Use as few parts as possible, because handling more parts takes more time Get the job done with whatever I have on the truck, because trips to the supply house and back to the job site waste time With that philosophy in mind one would use a ...


3

If you have a saddle valve clamp that is closed yet still letting water through, you may simply have to turn the handle a bit more with force to drive the pin tighter to the copper pipe. HOWEVER: If it instead breaks you have a bigger problem to solve. If you only wish to temporarily block water in a copper tube, squashing it flat with a tight vice grip ...


2

From comparing chart PEX vs Copper PEX tubing has much much better freeze burst resistance properties than copper. Its very important especially for people who lives in cold climate areas.


2

Get a pinch clamp tool, like this one, and a pipe cutter. Those are the tools you'll need. One tool works for all size pinch clamps. Copper has antimicrobial properties. Copper will oxidate and leak under certain water and electrical conditions. Copper that is not completely dry and clean cannot be soldered. Pex can be fixed underwater and covered in poo. ...


2

Are there some specific reasons why people recommend bending long copper pipes, instead of cutting them into sections and joining them using U-joints, elbow-joints etc. ? Pipe fittings add resistance to the flow of the fluid in the pipe. This is usually expressed in terms of an equivalent pipe length for the different fittings (eg, elbows, tees, etc). For ...


2

Bending copper has to be done with annealed copper. Rigid copper is too brittle can be done with either drawn or annealed copper. This table from copper.org does suggest slightly larger minimum radii for drawn pipe. thanks to @UNECS for prompting further research. You can make rigid copper easier to bend successfully by heating the area of the bend with a ...


2

Some plumbers and the posts above suggest replacing galvanized pipes should almost always be done. In my case, I believe that SOME of the replacement was a mistake. I replaced my galvanized steel pipes with PEX pipes. The old house I live in had galvanized drain pipes which were badly deteriorated. The entire drainage system required replacement. The ...


2

It's most likely something like Pyrotenax. Copper covered fireproof cable.


2

Alright, I took another look and it was definitely electrical. There were junction boxes branching off to the ceiling lights. Turns out it's original 60's era conduit and not new; just in good shape. Since then, buildings standards and material costs have changed drastically making it uneconomical to use.


2

I can think of two possible explanations: It could be brass conduit. These were once used to wire submerged swimming pool light fixtures. Maybe an electrician had some left over and used it where it wasn't necessarily required. It could actually be copper plumbing in a water-related use, such as to provide hot weather cooling for the roof above, or supply ...


2

The joints are there in the wall as they can't occur within the slab. They split the main supply to the bathroom into branches for the sink, tub/shower, and toilet.


2

You use plastic bushings. I couldn't find a photo with pipe, but here's one with electrical: This gives you the benefit of separation of materials and also a 'slip joint' to handle the expansion/contraction of pipes so they're not making lots of noises rubbing against framing members. To attach the pipe to the stud, you can use pipe clamps like this:


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