FAQ

Q: Are Pexgol Pipes UV resistant?

A: YES – Pexgol pipes are completely UV Resistant. Pexgol Pipes are made of PE-Xa resin with carbon black additional additives & stabilizers. These make the pipe black & completely resistant. The debate on PEX’s resistance has come up because a majority of PEX manufacturers serve an industry where pipes see no sun (pipes are covered, indoors, or buried), and do not need to add the carbon black. 

Q: Can Pexgol Pipes be insulated?

A: Yes. Our pipes are typically insulated on site, either with our Split-Tube Insulation System, or our Pour-In-Place method. This allows for the best use of the coiled pipe option. 

Q: Can you Butt-Weld or Fuse Pexgol Pipes?

A: No, Pexgol Pipes don’t melt. To connect Pexgol Pipes, we offer GP Flanged Couplings, Electrofusion Couplers, and Victaulic Couplers. 

Q: Can you use Electrofusion’s on Pexgol?

A: Yes. You can use EF Socket Couplers with Pexgol Pipes, While Pex does not melt itself, the heat “melts” the areas between the crosslinks, allowing the polyethylene to combine with the Pexgol Material. Normal Electrofusion Couplers work for lower temperature applications, while elevated temperatures require a Reinforced Electrofusion Coupler. 

Q: How are Pexgol Pipes shipped?

A: Pexgol pipes can be shipped in 38.7ft (11.8m) straight lengths for all sizes, or as coiled pipe up to 14” (355mm). 

Q: How do you connect Pex Pipes?

A: Connection normally depends on the applications. The most common connections are mechanical (such as via Flanges, GP Flanged Couplers, or Victaulic Couplers). You can also use Electrofusion Couplers for lower temperatures, or Reinforced Electrofusion Couplers for elevated temperatures.  

Q: What are the differences between Pex A, Pex B & Pex C?

A: PE-Xa is the original form for producing Pex. It uses a peroxide catalyst to cross-link the pipe during extrusion. While this is a more complicated form of extrusion, it ensures that the pipe is ready to be installed immediately after. It’s also the zero-energy state, which is the base for the material’s thermal memory. 

PeX-B is a simpler method of extrusion for Pex. The cross-linking catalyst is silane, which crosslinks in the presence of moisture. The cross-linking is done after extrusion. 

PeX-C is the process where pipe is cross-linked by using a form of radiation. It’s a very cost-effective method – however, this method is limited by the wall thickness of the pipe through which radiation can effectively penetrate. Therefore, it’s limited to small diameter plumbing pipes. 

Q: What is the largest size of Pexgol Pipes you can make?

A: Pexgol Pipes are manufactured up to 28”/710mm. However, this is not the maximum limit – it’s a matter of demand. 

Q: What should I consider when transitioning from other pipes to Pexgol?

A: The main consideration should be how IPS Sizes can differ. In metal pipes, the IPS size is nearly the internal diameter of the pipe. In plastic pipes, the OD can be very different than the ID. 

To avoid any problems, we would be happy to guide you in the specification process. Please reach out with any questions or consult our engineering guide. 

Q: Why is PEX able to handle high temperatures?

A: The cross-linking of the molecular chains adds to the structural stability of Pex. When a non-cross-linked material is heated, the individual molecules can easily move - leading to a pipe wall rapture. This rapture cannot happen with Pex, as the molecular chains are all connected & cannot move easily. 

Q: Why does Pexgol have a higher temperature rating than other PEX pipes?

A: The temperature rating for Pexgol is based on industrial experience in temperatures up to 114C/237F, and on third party testing in long-term exposure in hot water (3.5 years at 110C/230F).