PEX pipe vs. PEX pipe 2

PEX pipe vs. PEX pipe 2 #shorts

If you like these video's and would like to support this channel Any purchase that you make here will help and support this channel to improve and grow Thank You. https://amzn.to/2sjAISa Types of PEX tubing (A, B, C). Choosing the right type and brand for your project. What are the differences between common PEX brands? Is one brand better than the other? Which type of PEX should I use for my project? To answer these questions and help installers and homeowners to make an informed decision, we’ve decided to create a guide that is simple and yet offers details for further independent research. We think it would be fair to disclose to the reader from the start that we sell PEX-B pipe, but for the purposes of this article, we would try to refrain from promoting or discrediting any type of tubing unless it’s backed by independent research data. Classification of PEX by manufacturing process Regardless of brand, there are only (3) main manufacturing processes used to produce PEX tubing: Peroxide method (used to make PEX-A tubing) Silane method (for PEX-B tubing) Irradiation method (for PEX-C) Contrary to the popular belief, A, B, and C are not grades of PEX. These letters are used merely to identify the manufacturing process and have nothing to do with the quality or performance ratings of the end product except as explained further in the text. In fact, all of the above have to adhere to the same standard: Pressure and temperature ratings Minimum bending radius Pipe wall thickness and ID/OD dimensions (subject to manufacturing tolerances) * Note that these only apply to brands sold in the US and mentioned below. There are many little-known or no-brand products out there that may or may not meet these criteria. More on the dimensions, rating, and other technical specifications of PEX tubing can be found here. All types of PEX (A, B, C) have to comply with the same ASTM F876 and ASTM F877 standards and SDR9 dimensional standards before they can be used anywhere in the US. The pipe which conforms to these standards carries a properly readable imprint. A brief description of each manufacturing process and some of the leading brands are outlined below: PEX-A PEX-B PEX-C PEX-A tubing is produced using Peroxide (or, “Engel”) method, named after the inventor Tomas Engel. During the manufacturing process, free radicals are created when HDPE polymer is melted and cross-links between molecules occur at temperatures that exceed the decomposition temperature of the polymer. PEX-B is made using a "Silane" or "Moisture Cure" method of cross-linking, where links between the molecules of the HDPE polymer are formed after the extrusion process using a catalyst and by exposing PEX tubing to water (steam bath). This type of PEX is probably the most common and is manufactured by a large number of companies. PEX-C pipe is manufactured using the “Electronic Irradiation” method of cross-linking, also known as "Cold" cross-linking. Here, cross-linking of the molecules is done after the process of extrusion by exposing the pipe to an electron radiation beam. The radiation emitted allows us to break the existing links between molecules of the polymer and initiate the cross-linking process. Manufacturers: Uponor (formerly Wirsbo) Rehau Mr. PEX Manufacturers: Watts Viega Everhot Manufacturers: Nibco Roth Cash-Acme Comparing the end product Pros Cons PEX-A Highest flexibility (softness) among all PEX types. Kinks can be repaired with a heat gun. The highest degree of cross-linking. No coil memory. Highest price (100-160% higher than PEX-B)(1). Lower bursting pressure than PEX-B. Possible residual or leaching chemicals from the manufacturing process. Variation in wall thickness. PEX-B Highest chlorine and oxidative resistance(2) Highest bursting pressure. Lowest price vs. PEX-A and PEX-C(1). Lowest dimensional tolerances. Stiffer than PEX-A. Lower cross-linking ratio than PEX-A. Noticeable coil memory. Kinks can only be repaired by splicing (using coupling). PEX-C Softer than PEX-B. More environmentally friendly to manufacture. Little or no coil memory. #pex #pexpipe #zurnpex #ubonorpex #plumber #plumbing #howtoplumbing #pexpipeandb #plumbingsupplys #redandbluepipe #redwhiteandblueplumbing
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