
What is the best pipe material for water supply?
Here is a list of the most common water main piping materials:
- Cast iron
- Ductile iron
- Steel
- Copper
- Vitrified clay
- Reinforced concrete
- Asbestos cement
- PVC
- HDPE
- Fiberglass
What are the different grades of copper pipe?
- ACR & HVAC Copper Tubing
- Finned Copper Tube
- Flexible Copper Tubing
- Hard Copper Tubing
- Type K Copper Tubing
- Type L Copper Tubing
- Type M Copper Tubing
- Type DWV Copper Tubing
- Copper Water Tubing
- Flexible Copper Tubing
Is copper plumbing good or bad?
The Good. Copper pipes have been the proven standard of reliability for over 50 years! They are not prone to leaks, are extremely durable, stay fitted tightly, have a long life span and can be recycled, are resistant to heat, and won’t pollute your drinking water.
How to connect a CPVC to a copper water pipe?
- Every connection must have one male fitting and one female fitting in order for the two fittings to attach. ...
- The sizes of the threaded ends must match in order for the PEX fitting to twist onto the copper pipe fitting.
- You can connect pipes of different sizes as long as the threaded ends are the same size. ...

Should I use Type L or Type M copper pipe?
When to use Type L and Type M copper pipe sizes. Type L copper pipe is recommended where you need strength and protection. But for normal “in the wall” household plumbing, Type M copper pipe is just fine.
What is the difference between copper M and L?
Type L is medium weight and used most often for water lines in homes. Type M is thinner and is used underground or for light domestic water lines if local codes allow. Check your state and local codes before starting any project.
What are the three types of copper pipe?
The three most common types of copper pipe used in residential and commercial construction are Type K, Type L, and Type M. A fourth type, used for drain-waste-vent, or DWV, piping, can be found in some older homes.
What is the difference between copper pipe and copper tubing?
Tubing is usually more expensive than pipe due to tighter manufacturing tolerances. Interestingly, while the stated and measured OD's of tubing are almost exact in most cases, copper tubing generally has a measured OD that is 1/8” larger than stated OD. As such, maybe it should be called copper pipe.
What size copper pipe is used for water?
1/2 to 1 inchWhite plastic, copper, and galvanized (silver-toned) pipes from 1/2 to 1 inch in diameter generally carry water, though some galvanized steel, black steel, and flexible copper pipes of the same sizes may carry gas.
Can you use L copper in water?
K copper pipes are the only type of copper pipes that can be buried underground. L copper pipes supply water, whereas M copper pipes are used for heating. DMV pipes aren't used for water supply and have no pressure rating.
What size is residential water line?
Generally speaking, the main pipeline from the street to your home is either ¾ or 1 inch in diameter. Supply pipes are ¾ inch in diameter and individual components are ½ inch in diameter.
What are the 4 types of copper tubing?
There are two basic types of copper tubing, soft copper and rigid copper. Copper tubing is joined using flare connection, compression connection, pressed connection, or solder.
What is Type M copper used for?
Type M: With a wall thickness of 0.28 in for 1/2-inch pipe, this grade of copper pipe is commonly used for residential water supply pipes. (It is also used in fire protection, fuel oil, HVAC, and vacuum system piping, though such uses are not common for DIY homeowners.)
What are the 4 types of copper tubing?
Copper pipe manufacturers offer four standards of copper pipe which are types L, M, DWV, and K. These letters partially indicate the relative pipe wall thickness. A pipe's wall thickness is dependent on the pipe size.
Can Type M copper be used for refrigeration?
Just like type M, this type is available in hard drawn straight sections. This type of tubing is not used with HVAC refrigerants and may be seen as drains, water lines and minimal presssure applications. It is available hard and soft.
How can I tell what type of copper I have?
0:032:14Determining Types of Copper Wires - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo these rings over here these are in fact a bear bright copper wire. So these will go as in numberMoreSo these rings over here these are in fact a bear bright copper wire. So these will go as in number one price you can see that there's no residue. On it there's no rubber or insulation.
What type of copper pipe is used in commercial construction?
The three most common types of copper pipe used in residential and commercial construction are Type K, Type L, and Type M. A fourth type, used for drain-waste-vent, or DWV, piping, can be found in some older homes.
What is copper pipe used for?
Copper pipes are commonly used in the construction industry for water supply lines and refrigerant lines in HVAC (heating, cooling, and air-conditioning) systems . Copper pipes can be manufactured as soft or rigid copper and offer excellent corrosion-resistance and reliable connections.
What is type M copper pipe?
Type M Copper Pipe: Type M copper pipe is thinner than both type K and L copper pipe. Sold in both rigid and flexible forms, Type M is used most commonly for heating water services and vacuum systems. It can be used with sweat, compression, and flare fittings. Type M tubing is favored for residential work for its relatively low price; a thinner wall means less copper and thus a lower price. Type M copper is not always allowed by plumbing codes in all areas and applications. Always check with the local building authority for restrictions on its use.
What is DWV pipe?
It is suitable only for above-ground applications and has a low-pressure rating, typically lower than the water pressure of most municipal water supply systems. DWV pipe usually has yellow markings to distinguish it from M type copper. Read More.
What type of copper pipe is used for sweat?
It is available in rigid and flexible forms and can be used with sweat, compression, and flare fittings. Type L is considered the most common type of copper piping, as it can be used in many more applications than Type K. Flexible Type L copper can be used to repair or replace old water lines, although rigid tubing is more durable.
What is type K pipe?
Type K pipe is available in a rigid and flexible form and can be used with flared and compression fittings. It is recommended for main water lines and underground installations because its thickness helps it withstand the pressure from backfilled earth in trenches.
Is copper pipe type L or M?
Type L copper is thinner than Type K but thicker than type M. Type M Copper Pipe: Copper pipe type M wall is thinner than both type K and L copper. Sold in both rigid and flexible forms, Type M is used most commonly for heating water services and vacuum systems. It can be used with sweat, compression, and flare fittings.
What type of copper pipe is used for a wall?
Type L copper pipe is recommended where you need strength and protection. But for normal “in the wall” household plumbing, Type M copper pipe is just fine.
What is the difference between copper pipe and copper pipe?
The difference is the wall thickness of the copper pipe sizes and therefore the pressure it can handle. The exterior dimensions are identical, meaning you use the same copper fittings. You also use the same tools, materials and techniques to cut and sweat them.
What is the best alternative to copper water?
But according to veteran plumber Charlie Avoles, the best alternative to copper is PEX (flexible plastic pipe).
How long does a type L pipe last?
Most plumbers use the less-expensive Type M for residential projects: One told me, “Type L pipe will last 300 years and Type M only 250.”. But check with your building inspector; some areas require Type L. Acidic water with a pH of 7 or less can be hard on copper pipe.
Is copper pipe acidic?
Acidic water with a pH of 7 or less can be hard on copper pipe. If you have a well and find out from testing that the water is acidic, you may want to use the thicker-wall Type L pipe; better yet, use “plastic” CPVC pipe and fittings. Note that most “city water,” even in areas of the country where the water is acidic, ...
What is a K copper pipe?
Type K copper pipe and tube is the most robust of the four types because it has the largest wall thickness. Type K comes in hard and soft temper and will be identified by green markings. Type K copper can be used for many other applications such as: Fuel, gasses, HVAC, fire protection systems and vacuum systems to name a few.
What is DWV pipe?
DWV copper pipe is used for drainage waste and vent (DWV), above ground only and is identified by yellow markings.
What is copper pipe?
Copper pipe is almost pure copper manufactured to the requirements of ASTM B 42 - Standard Specification for Seamless Copper Pipe, Standard Sizes. It may be manufactured from any of five (5) copper alloys (C10200, C10300, C10800, C12000, C12200) that all conform to the chemical composition requirements of alloys containing a minimum of 99.9% Copper (Cu) and a maximum of 0.04% Phosphorous (P). Available sizes are 1/8" to 12" diameters in regular wall thickness and 1/8" to 10" in extra strong wall thickness. The standard length for copper pipe is 12 feet. Copper pipe is suitable for plumbing, boiler feed lines, refrigeration and for similar purposes.
What is a copper water tube?
Copper water tube is a seamless, almost pure copper material manufactured to the requirements of ASTM B 88 - Standard Specification for Seamless Copper Water Tube, of three basic wall thickness dimensions designated as types K, L, and M. Type K is the thickest and type M is the thinnest with type L being of intermediate thickness. All three types of tube are manufactured from copper alloy C12200 having a chemical composition of a minimum of 99.9% Copper (Cu) and Silver (Ag) combined and a maximum allowable range of Phosphorous (P) of 0.015 % - 0.040 %.
What is a bright annealed copper tube?
Bright annealed copper tube is an almost pure copper tube manufactured to the requirements of ASTM B 68 - Standard Specification for Seamless Copper Tube, Bright Annealed. It may be manufactured from any one of the following alloys: C10200, C10300, C10800, C12000, or C12200 unless specified otherwise on the original contract or purchase order. ASTM B68 tube is suitable for use in refrigeration, fuel oil, gasoline, or oil lines where the interior surface of the tube is essentially free of any scale or dirt and is specifically specified as ASTM B68.
What type of alloy is used for medical gas tubes?
(Both of these types are defined and described in ASTM B88.) Alloy C12200 is the only alloy permitted for use for medical gas tube and is a minimum 99.9% pure copper (Cu) and silver (Ag) combined with no greater than 0.040% phosphorous (P).
What is seamless brass tube?
Seamless brass tube is manufactured to the requirements of ASTM B 135 - Standard Specification for Seamless Brass Tube and may be either round, square, or rectangular and is suitable for general engineering applications. It may be manufactured from any one of the following alloys: C22000, C23000, C26000, C27000, C27200, C27400, C28000, C33000, C33200, C37000, or C44300 and these alloys contain Copper (Cu) concentrations of between 60% and 90% with various percentages of Zinc (Zn), Lead (Pb), and Tin (Sn) permitted, depending on the alloy.
What is the ASTM B 75 for copper?
Seamless copper tube manufactured to the ASTM B 75 - Standard Specification for Seamless Copper Tube may be either round, square, or rectangular and is suitable for general engineering applications. It may be manufactured from any one of the following alloys: C10100, C10200, C10300, C10800, C12000, or C12200 unless specified otherwise on the original contract or purchase order.
What is the phosphorus content of copper?
This tube is manufactured from alloy C12200 that is 99.9% copper (Cu)and silver (Ag) combined and has a phosphorous (P) content of between 0.015% to 0.040% making it an almost pure copper material.
What type of plumbing pipe is used for a sink?
The 5 Main Types of Plumbing Pipes for Your Home Plumbing System. 1. PVC Pipes. Polyvinyl chloride pipes (PVC) are commonly used as part of a sink, toilet, or shower drain line. Its plastic tubing is ideal for this kind of usage because it protects the water from rust and corrosion better than other types of pipes.
How long does copper pipe last?
Copper pipe has been a staple within the plumbing industry for decades. This type of plumbing pipe can last upwards of 50 years and is commonly found in sinks, showers, tubs, and other fixtures in new and old homes.
How many types of water pipes are there?
There are five main types of plumbing pipe materials that are still in use today: copper, galvanized steel, polyvinyl chloride (PVC), acrylonitrile butadiene styrene (ABS), and cross-linked polyethylene (PEX).
Why use PEX piping?
Similar to PVC piping, it prevents rust or corrosion from leaching into the water. Professionals remain drawn to PEX pipes because they are flexible and easy to weave through walls, ceilings, basements, and crawl spaces. At the same time, they’re strong enough to withstand the pressures of your water supply.
What is CPVC pipe?
Chlorinated polyvinyl chloride (CPVC) is also used. This type of plumbing pipe can be created by adding chlorine to PVC piping. This gives the material higher temperature performance and improved fire and corrosion resistance.
What are the different types of plumbing pipes?
Different types of plumbing pipes can be used in a number of ways, from carrying water to your kitchen faucet to delivering waste to your sewage system. These kinds of drainage and delivery systems have been around since ancient times. The Greeks used clay pipes to transport water to homes and public buildings. Moving into the early twentieth century, materials like cast iron, terra-cotta, copper, and galvanized steel became more popular.
What materials did the Greeks use to transport water?
The Greeks used clay pipes to transport water to homes and public buildings. Moving into the early twentieth century, materials like cast iron, terra-cotta, copper, and galvanized steel became more popular. As our understanding of lead poisoning developed, things evolved even further. Today, there are many different types of pipes available, ...
Why is copper pipe good for water?
Rigid copper pipe is great for water supply because it does not come with any health risks. 1 . Among the multiple options for connections, the best is the solder-type connection. The solder connection requires experience coupled with safety protocols.
What type of pipe is used in older homes?
Two additional types of pipe are sometimes found in older homes and are infrequently installed, especially by DIYers: steel and cast iron pipe. Galvanized steel pipe was used for decades for drainage, water supply, gas supply, and any number of other purposes.
What is PEX pipe?
PEX is a pipe that is rigid enough to withstand the pressures of water supply but flexible enough to weave throughout walls, ceilings, basements, and crawlspaces. PEX has truly delivered water-supply plumbing into the hands of do-it-yourselfers and professional plumbers.
Why is it so confusing to hire a plumber?
Whether hiring a plumber or taking on a do-it-yourself plumbing project, the experience can be confusing because of the choice of several types of plumbing pipes. Eventually, pipes' uses tend to blend together.
Is cast iron pipe still used?
Cast iron pipe was often used for sewer and other drainage purposes. Cast iron pipe is still found in many homes. Cast iron pipe is viable until the point that it rusts completely through. Cast iron is very heavy and difficult to cut. Retrofits tend to replace cast iron pipe with rigid plastic pipes such as ABS.
Is galvanized steel pipe used for water?
While galvanized steel pipe is still around (particularly for gas supply) it is far less used and is never used for water supply in new construction or remodel projects. Each end of the pipe is threaded, and individual pipes are screwed into each other with connecting fittings. Cast iron pipe was often used for sewer and other drainage purposes.
Is it legal to install pipe behind walls?
Check your local codes before installing this type of pipe. While it is commonly used across the United States, it is not legal everywhere. It must be well supported, and the fittings must be installed properly and tested, especially when installed behind walls.
What type of copper pipe is used for water supply?
Inflexible hard copper pipe requires pipe bending equipment in order to bend it and is usually cut and fit rather than bent. Most residential water supply plumbing uses two types of hard copper pipe called type M and type L. Advertisement.
What are the different types of copper pipes?
Manufacturers provide copper pipe in four standardized types: K, L, M and DWV. The letters indicate, in part, the relative thickness of the pipe wall from thickest to thinnest. The actual wall thickness depends on the size of the pipe.
What is the inside diameter of a copper pipe?
Copper pipes of the same type and size all have the same outside diameter, which allows them to use the same fittings for connections. The inside diameter varies by type due to the different thickness of the walls. For example, half-inch type M has an inside diameter of 0.569 inches and type L is 0.545 inches.
What type of water supply pipe is used in a home?
Types M and L make up the water supply pipes in homes. Type L has thicker walls and a higher pressure rating. Some local codes specify that only type L is allowed and that type M is not allowed. The International Building Code allows both L and M, as well as type K for use as water supply pipe.
What is the color of a pipe?
Type K is green, type L is blue, type M is red and DWV is yellow. Type L pipe may be referred to as blue, type M is often referred to as red.
What type of water pipes are used today?
Although many of these pipes are still used today, especially those made from ductile iron, most new water main applications use HDPE and PVC pipes owing to their unique properties.
What is the best pipe for a water main?
Water main pipes can be made from a variety of materials, including metal, clay, concrete, and plastics. In terms of size, the most common water main pipe diameter ranges from 6 to 16 inches, although there are 8, 10, and 12-inch options available as well. Here is a list of the most common water main piping materials:
What is the difference between copper and PVC?
Copper is typically used for the final pipe run from the water mains to the businesses and households receiving the water. PVC pipes, on the other hand, are primarily used for water main lines. This is because PVC is known for its corrosion and chemical resistance, in addition to the fact that it’s lightweight, relatively cheap, and long lasting.
Why do we need water mains?
In order to ensure reliable water supply for homeowners and businesses in a community, the water mains pipes need to be made from the right materials. The piping materials used for main water supply have changed over the years, with the development of new technologies.
Is copper a good material for water distribution?
Both copper and PVC have their uses in modern water distribution systems. Copper, on one hand, is a strong, yet flexible metal that is often the first choice for home plumbing. Professional plumbers and contractors often use copper because it can be used to form pipes with thin but strong walls. However, copper is prone to acidic corrosion.
