Omar Khalid
When it comes to plumbing, there are various types of pipes used for different purposes. One of the most common types is plastic water pipes, which are classified by their material composition. For example, PVC (polyvinyl chloride) is a white plastic pipe commonly used for waste lines. PEX (cross-linked polyethylene) pipes are used for hot and cold water distribution within homes. LLDPE (linear low-density polyethylene) is another type of plastic pipe that is suitable for potable water and food and beverage applications. HDPE (high-density polyethylene) pipes are also available and are often black in colour. The size of these pipes varies depending on their intended use, with PEX tubing typically ranging from 1/2 to 1 1/2 in diameter.
| Characteristics | Values |
|---|---|
| Type | PEX (Cross-linked polyethylene) |
| Colour | White |
| Size | 1/2 inch x 100 feet |
| Coil Length | Up to 1,000 feet |
| Temperature Rating | Minimum: 33°F at 160 PSIMaximum: 200°F at 80 PSI |
| Working Pressure | Maximum: 160 PSI at 33°F to 70°F |
| Features | Flexible, freeze-resistant, push-to-connect design |
| Use | Hot and cold potable water distribution, fire protection, municipal water service lines |
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What You'll Learn
- PEX tubing is made of cross-linked polyethylene and is suited for hot and cold drinking water
- PVC (polyvinyl chloride) is a white plastic pipe commonly used for waste lines
- LLDPE (linear low-density polyethylene) is the most common type of plastic water pipe
- HDPE (high-density polyethylene) is a black plastic water pipe
- SharkBite white PEX-B pipe is available in coils up to 1,000 feet in length
PEX tubing is made of cross-linked polyethylene and is suited for hot and cold drinking water
PEX stands for cross-linked polyethylene, and it is a type of flexible plastic plumbing pipe used for hot and cold water lines. It is made of cross-linked polyethylene, which gives it extra strength and makes it suitable for hot and cold drinking water applications. PEX tubing typically comes in larger diameters, from 1/2" to 1 1/2", with the size based on the inner diameter (ID) of the tubing, also called nominal or CTS (copper tube size). It is a popular choice for DIYers and professionals alike due to its flexibility, ease of use, and compatibility with various connection systems.
PEX tubing is available in different types, namely PEX-A, PEX-B, and PEX-C, which refer to the methods used to produce the pipe. PEX-A is produced using the Peroxide (Engel) method, PEX-B uses the Silane method, and PEX-C is made through Irradiation (Electronic Beam). While PEX-A has a higher cross-linking ratio, PEX-B is more commonly used and is manufactured to ASTM F876/F877/F2023 standards, ensuring its suitability for potable water applications.
PEX tubing is commonly used for household plumbing, including the entire distribution system from the service line to faucets. It is safe for drinking water, as it complies with NSF/ANSI Standard 61, which requires analysis for any chemicals that may leach into drinking water to ensure they remain below levels that could pose health risks. PEX tubing is also corrosion-resistant, making it suitable for use as a service line in contact with soil and water.
The size of PEX tubing to use depends on the specific application and water pressure needs. For example, 1/2" PEX plumbing tubing is commonly used with PEX plumbing manifolds to carry hot or cold water to plumbing fixtures, while 3/4" PEX pipe is generally used for main water distribution lines in small to medium-sized homes. Additionally, 3/8" PEX pipe is suitable for plumbing fixtures with normal or lower water flow requirements.
Overall, PEX tubing is a versatile and safe option for hot and cold drinking water applications, offering flexibility, strength, and compatibility with various plumbing systems.
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PVC (polyvinyl chloride) is a white plastic pipe commonly used for waste lines
PVC, or Polyvinyl Chloride, is a white plastic pipe commonly used for waste lines. It is a synthetic polymer made from the vinyl chloride monomer and is known for its durability, chemical resistance, and affordability. PVC is widely accessible and relatively affordable compared to many other plastics, making it a cost-effective choice for various industries.
PVC pipes are popular for plumbing systems due to their corrosion resistance and strength. They are also easy to install and require little more than a hacksaw and a miter box to cut. PVC initially gained popularity in plumbing because it was lighter and easier to work with than traditional galvanized steel pipes.
PVC plastic exhibits exceptional hardness and impact resistance due to its high density. This allows it to withstand physical impacts and maintain its shape even under mechanical stress. Its durability makes it an excellent option for applications requiring long-lasting performance, such as pipes and window frames. PVC is also used extensively in the electronic and electrical industries for cable and wire insulation.
In addition to its durability and affordability, PVC can be usefully modified to enhance specific properties. For example, additives like plasticizers, stabilizers, lubricants, fillers, pigments, and flame retardants can be incorporated into the PVC formulation to tailor it for different applications. This versatility makes PVC suitable for a wide range of uses, including plumbing pipes, electrical insulation, flooring, signage, inflatable products, and even medical devices such as blood bags and medical tubing.
PVC is available in both rigid and flexible forms. Rigid PVC is commonly used in construction for pipes, doors, and windows, while flexible PVC is used in plumbing and electrical cable insulation. It's important to note that when choosing PVC pipes for plumbing projects, factors such as function and the layout of the space should be considered.
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LLDPE (linear low-density polyethylene) is the most common type of plastic water pipe
LLDPE, or linear low-density polyethylene, is the most common type of plastic water pipe. It is a popular choice due to its robustness and flexibility. LLDPE is more robust than traditional low or medium-density polyethylene and offers excellent pressure and temperature ratings. It is also highly resistant to environmental stress cracking.
LLDPE is perfect for potable water, food and beverage applications, and pneumatic compressed air applications. It is recommended for use with cold and intermittent hot water. LLDPE tubing is often used to connect water filters, countertop faucets, ice machines, and under-sink water filters. Its flexibility allows it to bend and protect itself from bumps under the counter.
The tubing is manufactured with FDA-approved materials and meets NSF Standard 51 and 61 certifications. It is designed to be used with all standard fittings and point-of-use drinking water systems. LLDPE is structurally similar to LDPE (low-density polyethylene) but differs due to the absence of long chain branching. LLDPE has a linear backbone with short and uniform branches that can slide against each other upon elongation without becoming entangled.
LLDPE is produced at lower temperatures and pressures through the copolymerization of ethylene with longer-chain olefins. The amount of comonomer typically ranges from 1 to 10%. The production process results in LLDPE having a narrower molecular weight distribution and superior rheological properties compared to LDPE. This gives LLDPE higher tensile strength and better resistance to punctures and impact.
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HDPE (high-density polyethylene) is a black plastic water pipe
White plastic water pipes are usually made from PVC (polyvinyl chloride). This type of pipe is commonly used for waste lines in plumbing.
Black plastic water pipes, on the other hand, are often made from HDPE (high-density polyethylene). HDPE is a thermoplastic with low permeability and robust molecular bonding, making it suitable for high-pressure pipelines. This type of pipe is frequently used for water mains, gas mains, sewer mains, slurry transfer lines, rural irrigation, fire-suppression system supply lines, electrical and communication conduits, and stormwater and drainage pipes.
HDPE plastic water pipes are also known for their durability, strength, and burst resistance. They are manufactured in the USA and are NSF-approved for potable drinking water. The higher pressure ratings of HDPE pipes make them more durable and resistant to bursting. It is recommended to use a pipe that is rated for at least 125% of the pressure of your pump or water service.
The black colour of HDPE pipes is due to the addition of 3-5% carbon black to the clear polyethylene material, which adds UV light resistance. These pipes are often joined by butt welding, electrofusion welding, socket welding, or extrusion welding, creating a completely homogeneous joint without the need for additional seals.
When choosing a water pipe, it is important to consider the chemical compatibility, temperature rating, and pressure of the fluid in the application. Different types of pipes, such as PEX, PVC, and HDPE, are suited for different purposes and have varying levels of strength, flexibility, and resistance to environmental factors.
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SharkBite white PEX-B pipe is available in coils up to 1,000 feet in length
The SharkBite white PEX-B pipe is a flexible tubing ideal for plumbing projects. It is available in coils of up to 1,000 feet in length, which allows for longer runs and fewer connections, reducing the overall cost, time, and potential leak points. This pipe is freeze-resistant, expanding and contracting as water freezes and thaws within, making it perfect for hot and cold potable water distribution, fire protection, and municipal water service lines.
The SharkBite white PEX-B pipe is easy to install, with an innovative push-to-connect design that offers faster installation compared to rigid pipes. It is also highly durable, with six-month UV resistance and the highest-rated chlorine resistance. The pipe is certified to meet ASTM F2023 oxidative-resistance requirements for continuous hot water recirculation and is approved for water service lines and burial applications, including being buried under concrete.
The SharkBite white PEX-B pipe has a size range of 1/4" to 2" and is well-suited for household plumbing. Its flexibility allows it to bend around corners, reducing the number of connection points needed. The pipe is made of cross-linked polyethylene, providing extra strength and making it suitable for both hot and cold drinking water applications.
PEX tubing is a popular choice for builders due to its versatility and ease of use. It is important to note that PEX tubing sizes are based on the inner diameter (ID) of the tubing, also referred to as nominal or CTS (copper tube size). SharkBite's white PEX-B pipe is a reliable and efficient option for plumbing projects, offering freeze resistance, durability, and ease of installation.
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Frequently asked questions
The size of a white plastic water line depends on its material and intended use. PEX tubing, a common white plastic water line, typically comes in larger diameters ranging from 1/2" to 1 1/2".
PEX tubing is often used for household plumbing, including hot and cold water distribution lines. It is also suitable for potable water applications and offers excellent freeze resistance.
Besides PEX, PVC (polyvinyl chloride) and LLDPE (linear low-density polyethylene) are commonly used for plastic water lines. PVC is typically used for waste lines, while LLDPE is suitable for potable water and food and beverage applications.
When choosing a plastic water line, consider the chemical compatibility, temperature rating, and pressure requirements of your specific application. Additionally, check local plumbing codes and regulations to ensure the material you choose is permitted for your intended use.
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