How Safe is PEX Tubing? - GreenBuildingAdvisor
2010年12月13日 · Builders have climbed on the PEX bandwagon in droves. Cross-linked polyethylene tubing is increasingly taking the place of copper in residential plumbing systems for a variety of reasons: ease of installation, resistance to acidic water, and the virtual elimination of leak-prone fittings. It all adds up to a juggernaut for a building material that's only been available in the U.S. since the ...
PEX A vs. PEX B - GreenBuildingAdvisor
2016年5月26日 · I am obsessing over which pex to use for a whole house manifold installation. The choices are pex-a (uponor) vs pex b (viega). Uponor seems easier to work with, less kinking, better flow etc. What I am most concerned with is: 1.longevity (this is my forever house) 2. safety (leaching of chemicals into drinking water) I am on a well. …
Lingering Questions About PEX - GreenBuildingAdvisor
2016年6月8日 · PEX can come in one of three categories, called PEX-a, PEX-b and PEX-c. In some applications it’s layered with metals such as aluminum. Overall, consumers can choose from at least 70 different brands that have been certified by NSF/ANSI 61. This PEX water line has a layer of aluminum to help the pipe retain its shape.
Alternatives to PEX piping to avoid chemical contamination and …
2024年2月3日 · In summary, PEX piping contaminates water and there is huge variation between brands and even within brands based on batch. It does seem worse at the beginning, as new piping must be flushed for some length of time to “remove” the contaminants and off-gassing.
Making the Best PEX Connections - GreenBuildingAdvisor
2016年6月20日 · For Richard McGrath, PEX-A is at the top of the heap. “PEX-A is produced with a better manufacturing process than PEX-B as the crosslinking takes place during the extrusion process,” McGrath writes. “PEX-A products usually achieve an 85% crosslinking while PEX-B products average a 65-70%.”
Can PEX pipe be reused after a fitting is removed?
2015年11月27日 · Most supply stops will be threaded for a 3/8" hose. Your faucet connection will likely be the same. FYI, if u intend to do any more diy plumbing, the stainless steel cinch clamp system is almost foolproof, and the tool is approx $30 dollars. Compression fittings on pex also work fine, but use a stiffener in the pex.
3/4 pex max flow rate - GreenBuildingAdvisor
2019年10月23日 · I’m going to pex manifold, but will have a whole house water system in the line that is rated for 14 gpm max. The long details: City Home is 3/4 pvc schedule 40 in from main, then it’s reduce 1/2 ,trunk and branch copper all done with 1/2.
Sealing PEX and PVC pipe penetrations - GreenBuildingAdvisor
2013年2月27日 · I am reposting this to the Code section; not getting an answer in General Questions. What do I use to meet code-required fire blocking and good weatherizing/air sealing for the circumferential individual tube/pipe and ganged tubes (a cluster of tubes), penetration gaps for PEX-to-wood (and plywood) and PEX-to-PVC pipe, and for PVC-to-wood, and PVC- & PEX-to-drywall? With manifold distribution ...
Thoughts on Legend HyperPure pipe - GreenBuildingAdvisor
2017年8月23日 · "Legend HyperPure pipe. A newer and therefore less proven candidate for those interested in a 100% recyclable alternative to PEX, this is a bi-modal polyethylene raised temperature (PE-RT) tubing. The resin for this tubing comes from Dow, and it’s called bi-modal because there are both high-molecular weight elements for strength and low ...
Three Types of PEX Tubing - GreenBuildingAdvisor
2022年11月1日 · PEX-b In a recirculating heating system that uses high- temperature chlorinated water, plastic pipes are more susceptible to weakening over time. Although tubing from all three manufacturing methods has met ASTM standards for chlorine resistance, this is the only PEX to have passed the stringent chlorine-recirculating standard of the product ...