PVC connections are made by using a primer that softens the PVC and then applying PVC glue that melts the joints and pipe together. CPVC pipe should always be clearly labeled if used for potable (drinkable) water. Schedules 40 is common for pipes used in water distribution. PVC also comes in a variety of thicknesses, called schedules. For example, purple pipe with black lettering is sometimes used for reclaimed water. You can often tell what it is used for by the colors and marks on the pipe. PVC pipe is often white but it can also come in other colors.
PVC is also very common in pool and spa systems. Of the different types of plastic pipe used for water supply, PVC pipe has a wide variety of plumbing uses but is mostly used for drainage PVC is rarely used in potable water applications, and in many jurisdictions it is not considered safe for drinking. PVC is an acronym that stands for polyvinyl chloride. M copper tube is used in heating applications and isn't allowed for water lines in some jurisdictions because it cannot withstand high pressure water. K copper is used in underground applications and high pressure situations. Copper can be connected in different ways, including compression fittings, push-fit fittings, or sweat-soldering. Depending on the city you live in or commercial versus residential applications, copper is still used widely over CVPC and PEX tubing.Ĭopper comes in different thicknesses which are labeled M, L, and K. PVC-U and PVC-C systems offer pipes and fittings for solvent welding to convey swimming pool and SPA water under pressure at a maximum operating temperature of. Due to the price of copper and the longer labor needed to install, many builders have switched to alternative water distribution piping, especially PEX. More recently, various forms of plastic have replaced copper as the favorite, though copper pipes and fittings are still widely available. Copper plumbing pipes can last for up to 50 years, but as it ages, copper thins out, eventually leading to pinhole leaks. Copper piping works in both underground and above-ground applications, but copper can be affected by some soils and it should have a protective sleeve if used underground.įor many years, copper was the gold standard for water supply pipes, as galvanized steel fell from favor. Although once used in gas piping, this is no longer allowed in some jurisdictions.
#Water conveyance pipe naterial manual#
This Manual of Practice (MOP) pertains to the following types of pipe: Information about common standards, industry groups, and reference publications is also included. Installation and maintenance criteria include specifications tapping methods repair methods installation, backfill, and protective requirements and useful life. Performance characteristics include allowable internal pressure, external load capabilities, hydraulic resistance factor, wave speed, allowable leakage rates, and water quality tolerances. For each type of pipe, 20 characteristics are described, including such physical attributes as material, available sizes, standard lengths, protective linings and coatings, joints, and fittings. Pipelines for Water Conveyance and Drainage offers a concise listing and description of 11 types of pipe commonly used for water conveyance and drainage.
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