Dezincification Pex, The 3/4" elbows and 1/2" elbows are fine. Barb x barb connection for PEX plumbin ApolloPEX Lead-Free dezincification-resistant brass couplings are the premier low cost solution for connections within a PEX piping system. Apollo PEX Lead-Free dezincification-resistant brass couplings are the premier low cost solution for connections within a PEX piping system. Manufacturer : NIBCO. It weakens the metal and it can snap suddenly. Crosslinking is a chemical reaction that allows HDPE to become stronger, more flexible, and more I happened to read an old article yesterday about a serious problem with Zurn pex fittings. I don't have a softening system in the house I just moved into. When the water supply is too acidic or alkaline, or if it has elevated levels of oxygen or carbon dioxide, the zinc will corrode over time. There is the general belief that DZR/red brass "solves" this. PEX TUBING AND DEZINCIFICATION In the last 20 years or so, many new homes or homes with revamped plumbing systems have PEX tubing as a part of the plumbing system. Some companies in Florida will not insure any home with PEX piping, others won’t accept PEX installed before 2010, and some just want an inspector to determine if the PEX is in good condition to issue coverage. Apparently, over time they can lose their zinc, become corroded and weakened and fail. NSF listed. This looks like dezincification. (See below). All PEX tubing is individually bagged, boxed and stored in a dry, ventilated environment, away from sunlight. I did some reading and it appears there was an issues with dezincification on some fittings. Apollo APXME12 Brass Pex Ell Adaptor, 1/2"Pex X 1/2"MPT Apollo PEX lead-free dezincification-resistant brass male elbows are the premier low-cost solution for connections within a PEX piping system. All PEX plumbing fittings, manifolds and valves sold on PexUniverse are approved for potable water and made from dezincification resistant materials. I assume what I'm seeing in the pictures below is dezincification. This article reports on current observations of corrosion & leakage in PEX piping systems in recently-constructed homes in the U. So I need to repipe or replace the fittings. It’s all because there have been multiple issues and class-action lawsuits over the years regarding failures of PEX. This fitting may be used with the stainless steel clamping system or the copper crimp ring system. PEX piping has become more and more common in commercial and residential plumbing in Asheville and elsewhere. This newsletter video explains dezincification and discusses how to advise your clients Uponor PEX dezincification? Water supply is 65 psi city water treated via carbon + heavy metal filter, electric descaler, then 40 gal AO Smith tank. <15 wt% Zn) rarely suffers this type of corrosion because the Zn is still in the Cu matrix. Its more common on the hot water side (heat causes the corrosion process to accelerate) and it generally appears in water with low mineral content and can be helped with high dissolved oxygen. SharkBite PEX piping can lend itself to many applications due to its physical properties of flexibility, reliability, and installation ease such as hydronic heating, fire protection, etc. It results in a weak spongy copper layer at the water contact surface It can progress through the part causing leaks 3/4 in. Note that only the 3/4" tees have the white powdery substance on them. […] SageWater is expert in defective yellow brass fitting replacement in condos and apartments. It features a full port and a blowout-proof stem. While most everything focuses on the Material of the fittings to resolved, I haven't seen Highlights Constructed of chrome-plated lead-free dezincification resistant (DZR) brass for reliability and strength Compatible with 1/2 in. Apollo PEX fittings may be used with copper crimp rings, stainless steel pinch clamps or stainless steel crimp sleeve all sold separately. All the 3/4" tees showing the powder are ones I installed when To avoid the problem of dezincification, most PEX companies today use a resistant brass or PPSU (plastic) fitting. Pex compression fitting failure is caused by dezincification that results in corrosion which will create leaks. But, the dezincification issue was the water corroding away the zinc of the yellow brass giving it a pitting style corrosion look to the fittings. It’s an electrochemical reaction between zinc and some chemicals found in water. Hot tub fill time has increased from 3 to 12 minutes. These benefits make DZR brass PEX fittings a reliable, durable, and corrosion-resistant choice for plumbing applications, especially in environments where standard brass might be vulnerable to dezincification. D. ” What is dezincification and the problems it can cause? Dezincification is the selective loss of zinc from brass. Exclusively designed for use with PEX-A pipe, the fittings offer a larger I. PEX pipes are made of a flexible material called crosslinked polyethylene that’s better than metal pipes or rigid plastic pipes, such as PVC pipes. Exclusively designed for use with PEX-A pipe, the fittings offer a larger ID than traditional crimp fittings for full flow resulting in fast delivery of potable water. PEX pipe Meets UPC, IPC, and cUPC standards Can be secured using copper crimps, stainless steel pinch clamps, or stainless steel crimp sleeves NSF listed Barb x compression connection for PEX plumbing systems As PEX systems gain popularity and leaded brass is recognized as an important source of lead in potable water systems, it is important to examine dezincification corrosion in more detail. ApolloPEX fittings are suitable for both potable water and hydronic heating systems. ASTM WIPEX fittings WIPEX dezincification-resistant (DZR) compression fittings transition PEX service pipe to a male NPT thread for a watertight, leak-resistant system. As PEX systems gain popularity and leaded brass is recognized as an important source of lead in potable water systems, it is important to examine dezincification corrosion in more detail. I read about Zurn ending up in a lawsuit or something. I'm planning to get a local plumber to take a look but am wanting to get multiple opinions. Barb connection for PEX plumbing syste Apollo® ExpansionPEX couplings are manufactured using lead-free dezincification-resistant brass. Help! My house had the 2008 Zurn fittings that have really gone through dezincification and I think are really cutting down on water flow. Attic was hot and dry. Any other experiences? Normal. Can be secured in place using copper crimps, stainless steel pinch clamps or stainless steel crimp sleeves. In 1968, German scientist Thomas Engle discovered a way to crosslink common plastic (polyethylene) through radiation to produce a much suppler form of the material. Apollo PEX™ fittings may be used with copper crimp rings, stainless steel pinch clamps or stainless steel crimp sleeve. Zinc is a highly reactive metal, as seen in its galvanic series ranking. It has been alleged that these fittings contain a higher-than-normal level of zinc, which, when they come in contact with water, can fail earlier than expected due to a process known as “dezincification. PEX pipes, for example, are less likely to burst or corrode. Apollo PEX lead-free dezincification-resistant brass elbows are the premier low-cost solution for connections within a PEX piping system. Bluefin Lead Free Brass Couplings make PEX to PEX connections for PEX Tubing. Ball Stem Material : BRS - Brass Ball and Stem. Jul 23, 2020 · Dezincification happens in yellow brass (high zinc content) but not red brass (low zinc content). For use with PEX-A pipe only. Dezincification of Pipe Fittings - Providing tips to prevent dezincification of pipe fittings, information about pipe fitting dezincification. Than traditional crimp fittings for full flow resulting in fast delivery of potable water. Upon further research, it appears the Quest pipe might have a history of connections failing in this manner. Feb 4, 2026 · Dezincification PEX pipes are made of plastic tubing that is connected by brass fittings. Based on the images what's the likelihood of just normal I'm well aware of the issues of Dezincification in Brass fittings. Apollo PEX fittings are suitable for both potable water and hydronic heating systems. If your home was built or re-piped during this period, there’s a chance you have fittings at risk of premature failure. In the triangle, it seems builders and plumbers have used plastic fittings almost exclusively since ~2010. Tubing: PEX tubing manufactured or sold by NIBCO in the United States using (or labeled by NIBCO as using) its 1006 formulation and used in residential or commercial structures, including NIBCO NEXT-Pure Tubing, NIBCO DURA-PEX Tubing, and NIBCO. e. They make these fittings differently now and call it DZR -dezincification resistant. Compatible with PEX pipe. I would replace all that with new PEX and plastic or DZR brass fittings. Meets UPC, IPC and cUPC standard. Apollo APXC11 Brass Pex Coupler, 1" Apollo PEX™ lead-free dezincification-resistant brass couplings are the premier low cost solution for connections within a PEX piping system. Recommend replacing them with plastic fittings, especially if you are on well PEX cross linked polyethylene piping guide: This article describes the properties of Pex Tubing or Piping, Cross-Linked Polyethylene (PEX). Brass PEX-B Barb 90 Elbow (10-Pack) by Apollo $10 92139 area Constructed of lead free dezincification resistant (DZR) brass for superior reliability and strength Most economical piping Apollo APXT1225PK Brass Pex Tee, 1/2" 25Pk Apollo PEX lead-free dezincification-resistant brass tees are the premier low-cost solution for connections within a PEX piping system. Similar to Kitec piping’s brass fittings, these Zurn PEX fittings can experience a reaction called dezincification. Given that PEX is having some issues with connectors this is looking like the poly pipe connectors issue all over again. Refer to a licensed plumbing contractor for further evaluation and repairs. Barb x barb x barb connection for PEX Apollo® ExpansionPEX couplings are manufactured using lead-free dezincification-resistant brass. Most of my fittings are from. This product is made of Dezincification resistant ECO Brass. Pex dezincification, occlusion in under 1 minute Home inspection channel 1. This newsletter video explains dezincification and discusses how to advise your clients about it. Layer-type dezincification reduces the thickness of fittings and valves uniformly, weakening their surface without necessarily creating any cracks. Dezincification is a problem associated with PEX, which is being installed in many existing and new builds. Is this well water or municipal supply? Oct 31, 2024 · Suspect: Signs of dezincification, white residue to build up on T-fittings and elbows. But when you buy brass fitting they dont say how much zink used to manufacture it. The problems include: •• Older PEX pipe had brass connectors A local plumber mentioned he prefers using the plastic PEX fittings since the brass can have corrosion issues. Red brass (i. Constructed of lead free dezincification resistant (DZR) brass for superior reliability and strength. Versatile SharkBite PEX can be installed in dry or wet conditions. com and they have a warning for all their brass ball valves saying they are subject to dezincification and shouldn't be used if you have hard water. I noticed my fittings starting to show signs of dezincification and thought I would share. 82K subscribers Subscribed In this video, we break down what dezincification is, how it affects brass fittings, and how you can prevent it in your plumbing system. I took off a few fittings and the pipe is clear, looks usable. Is dezincification an issue for pex? I'm ordering some pex valves from supplyhouse. Aug 27, 2025 · Dezincification is a little-known but costly failure that plagued certain brass PEX fittings installed between the mid-1990s and the early 2010s. S. So I am thinking of changing to plastic ?????? Or whats another way to ovoid Dezincification process with brass and pex ?????? Dezincification of Brass Dezincification is the corrosion of an alloy (i. I had a home inspection on a condo and the inspector warned about the possibility of dezincification as a couple of the PEX fittings had corrosion. , particularly in Dec 2, 2025 · Dezincification-resistant (DZR) brass alloys are specifically engineered to combat this issue, but older, non-DZR fittings can fail prematurely. Why Dezincification Occurs Copper-zinc alloys containing more than 15% zinc are susceptible to dezincification. Just wondering if others have seen this and can verify. And brass dezincification doesn't turn the fittings green because the copper wasn't being corroded, the zinc was. This valve is dezincification resistant and is for use with copper, CPVC-CTS or PEX tubing. Ive seen plenty of this stuff but have yet to see the connection tarnish like this. Thanks Not a immediate failure per say however I don’t know what is normal corrosion and what may be dezincification leading to failure. PEX Piping Brass Fitting Corrosion, Leaks, & dezincification failures: Current field reports & photographs of corrosion, leaks, & obstructive corrosion build-up inside of brass elbows, tees, & adapters used with plastic PEX water supply piping. Pex pipe replacement addresses these fittings, that are subject to dezincification, which can cause disastrous leaks. PEX is made from crosslinked High Density Polyethylene (HDPE) polymer and looks similar to a garden hose when coiled up. I have no idea if I have hard water or not. Basically it is a process in which zinc is lost and copper is left behind. I think I have some work to do this weekend. It is a type of corrosion that occurs with low quality brass alloys in water with a high mineral content or acidic water. I am no professional plumber, but pex is quite simple * Conical Inlet to minimize turbulence * Includes Bolt Kit and Wing Handle and Gasket 2417ABHV FNPT x Flange 600 WOG AB1953, NSF/ANSI/CAN 61 & 372 2419ABHV Solder x Flange 600 WOG AB1953, NSF/ANSI/CAN 61 & 372 2420ABHV EzPress x Flange 250 WOG AB1953, NSF/ANSI/CAN 61 & 372 2424ABHV PEX (F-1960) x Flange 400 WOG AB1953, NSF/ANSI/CAN 61 & 372 2412ABHV FNPT x Flange x Male Hose (Drain/Fill) 600 PEX Fittings – Dezincification When water leaks from the tubing and comes in contact with PEX brass fittings, zinc can “leach” out of the fittings (a process known as dezincification). Found corroded? PEX plumbing connections in an attic today here in Florida. Apollo APXE11 Brass Pex Ell, 1" Apollo PEX lead-free dezincification-resistant brass elbows are the premier low-cost solution for connections within a PEX piping system. Apollo PEX™ fittings are suitable for both potable water and hydronic heating systems. Silicon bronze is better but more expensive. Make sure any valves are DZR brass or silicon bronze. Lines were installed about 10 years ago and started started showing signs of degradation around the 7 year mark. For more information googled and came accross that PEX and BRASS cause Dezincification if the brass fitting has more than 15% zinc. metal) where the Zn in the alloy reacts preferentially in a corrosive environment. Of course you can find stuff online claiming/showing to still have issues. The two main types of dezincification are plug-type dezincification and layer-type dezincification: Plug-type dezincification results in deep cracks or holes in fittings and valves. It is really common on brass pex fittings, where the zinc used in the fitting deteriorates, and the microscopic holes it leaves behind start to weep. We discuss the uses of PEX tubing for water supply & in heating applications. How Water Quality Accelerates Damage The rate at which dezincification occurs is heavily influenced by the chemical composition of the water flowing through the PEX system. mu3d, n6at0, rf0qv, xkmq8q, j7up, lwzxh, ofgbhn, b0ww5, wbwb8, j2z5e,