Bath Shower Today: Search results for Incoming Quality Control

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Monday, July 10, 2017

10mm Hinge Glass Frameless Plastic Folding Shower Screen Bath Room Doors

Read article : 10mm Hinge Glass Frameless Plastic Folding Shower Screen Bath Room Doors

Product Description

10mm hinge glass frameless plastic folding shower screen bath room doors

CE,3C approved competitive price shower screen,glass shower door and corner shower wall industry leading manufacturer

(1).Glass:10mm clear tempered safety glass,8mm is available with lower price

Nano easy clean glass is available

(2).Size:1200*2000mm/Customized size

(3).Pivot door (180 degree high quality hinge)

(4).Optional handle and fitting
(5).With 2 glass shelives
(6).Reversible design

(7).100% frameless design

(8).Can be customer sized

Product Description:

10mm hinge glass frameless plastic folding shower screen bath room doors
Model	BLS-V9944
Size	1200*2000mm
	Customized size
Glass Door	10mm tempered clear glass
	More thickness choice:8mm is available
	More glass finish choices: acid glass,matt/fabric/woven glass, frosted glass,colorful glass, colorful woven glass, colorful acid glass etc.
Profile	Chrome zinc alloy clamps,brass clamps is available with different price
	More choices about aluminum finish and shape: Chrome finished, Satin and other available
Features	Pivot door (180 degree high quality hinge)
	Optional handle and fitting
	With 2 glass shelives
	100% frameless design Reversible design
	Can be customer sized
Package	1 set in a carton
	High quality carton for glass,aluminum profile, installation manual,etc.
	High quality carton with bubble bag inside, PP belt outside
Delivery	Samples: negotiable
	25 days after confirming deposit(1*20'GP)
	30 days after confirming deposit(1*40'HQ)
	35 days after confirming deposit(2*40'HQ)
Port	Ningbo/Shanghai
MOQ	10 sets per model,1*20'GP per order mixed with different models
Supply Ability	20000 sets per month
Payment	1.T/T:30% deposit in advance, Balance paid by B/L copy
	2.L/C:Irrevocable L/C at sight
	Special cases for special payment terms are available

Reference:

MORE OPTIONS OF NEW DESIGN SHOWER ROOM FOR YOUR SELECTION!
10mm hinge glass frameless plastic folding shower screen bath room doors

Tuesday, April 25, 2017

Eero WiFi System Review | Digital Trends

Read article : Eero WiFi System Review | Digital Trends

One of the biggest recent movements in the networking industry is the introduction of mesh technology. This tech made its debut in 2016, promising a blanket of wireless connectivity that fills every inch of a home or office. These systems are typically sold in kits of two or more identical devices that can be spread out vertically and horizontally to create a connected web of coverage.

We’ve taken a close look at several solutions over the last several months, and now we have the Eero system in-house. This system hit the market in February of 2016, selling as a three-pack for $400, a two-pack for $300, and as a single unit for $200. That may seem rather expensive, but feature-packed, high-performance routers can cost up to $300 and broadcast from only a single point in the home or office.

Eero’s initial setup focuses on simplicity

The Eero kit we received was the three-pack shipped in a rectangular box. After opening the lid, the unit on the left sported a pull-off tab printed with the word “Start.” We lifted the unit out of the box to see a cardboard insert with instructions to download the Eero app from Google Play or Apple’s App Store. The unit’s power adapter was found sitting under this cardboard insert.

Once the app was installed on an Android device, we created a free account, positioned the first Eero unit next to the ISP’s modem, plugged the provided Ethernet cable into one of the two ports on the Eero, connected it to the modem, and fired it up. The app then proceeded to connect to the Eero unit through Bluetooth, which honestly caused us a few headaches later. However, with the initial unit, we didn’t have any problems creating the network name, password, and device location description.

Eero WiFi System review" />

Eero WiFi System review" />

The second unit is what caused the headaches. This was planted in the same location we used for other mesh network setups, but for some reason the Eero app said we were getting a poor connection to the first unit. To make matters worse, the app wouldn’t let us proceed with installing the second unit despite the connectivity issue, forcing us to relocate the unit. However, no matter where we planted the second unit, we received a poor connection message, even when it was seated next to the first Eero unit and modem.

Awesome customer support saved the day

After yanking out buckets of hair, we broke down and called technical support. A technician had us connect the second unit to the first unit via an Ethernet connection so that the two could communicate and verify they were connected. After that, we disconnected the second unit, placed it back into its original location in the next room, and balance returned to the Force. The third Eero unit gave us no problems whatsoever.

Eero is a good system for mainstream customers, but enthusiasts may want to look elsewhere.

So, what happened? The technician said it was a bad Bluetooth session. Based on his comments, this wasn’t the first case of bad Bluetooth connectivity, and drives home the point of relying solely on a Bluetooth connection to establish a network is not without problems. Customers should have access to a web-based interface via a wired connection just in case the setup process hits a roadblock. However, several of the mesh-based networking setups sold on the market seemingly ignore this type of user control.

When all was said and done, we had the first unit connected to the modem in the Dining Room, which is in the center of the house. We moved the second unit into Bedroom #3, and the third unit was placed in Bedroom #4. Thus, we created a straight line throughout the house instead of a C-shaped layout as we used for the Luma system.

While there is a lot of wireless activity in the Living Room, we wanted to make sure the blanket covered every aspect of the house, including Bedroom #4 that’s — one of two rooms converted from a garage. Since we don’t have a second floor, we wanted to create a large horizontal blanket.

Eero’s mobile app offers easy management

With everything set up, we headed back into the mobile app. The home screen shows the current internet speed, the active Eero units, and all the connected devices. Tap on an Eero icon and users will see details like broadcast strength (in bars), IP address, firmware version, model number, serial number, and more. Tap on a connected device icon to see its current activity, connection strength, which Eero it’s connected to, its IP address, MAC address, and so on. There’s a menu button on the home screen for accessing network settings.

As previously indicated, the Eero system isn’t exactly feature-rich when it comes to network customization. There’s no web-based interface here to dig into the gritty details, but rather a simple app for switching on/off a guest network, adding additional Eero units, getting help, and adjusting basic network settings. The app can be used to establish profiles, which can be used as makeshift parental controls.

For instance, parents can create a profile assigning a child to a specific connected device. The profile is locked to the device’s MAC address so that Eero can associate the child with the device no matter what IP address it uses. Thus, the parent can pause the child’s internet access or set a scheduled pause, blocking access at night, or during homework time.

As for the actual customizable network settings, these are rather slim. Users can use a custom DNS rather than the ones provided by the router, customize the DHCP server, assign a static IP address to a device, create port forwarding rules, and switch on/off Universal Plug and Play. Users have no control over switching channels, establishing channel widths, and so on.

And that’s a shame, as users should have complete control over their network. But this isn’t the first mesh-based network we’ve seen with semi-closed settings. The whole point of systems like Eero and Luma is that customers plug-and-go without having to think about the ideal channel for 2.4GHz or which security protocol to use. For the novice user, the “advanced” settings may be more than they can chew, but experienced network tweakers will find very little meat to nibble.

Eero WiFi System Compared To

Eero’s simplicity extends out to its appearance

Each Eero device is identical, sporting two gigabit Ethernet ports, a USB 2.0 port, and a power connector. They measure just 4.75 (W) x 4.75 (D) x 1.34 (H) inches, making them capable of fitting in just about anywhere in the home or office. The upper casing is a shiny white with rounded edges, while the bottom half and built-in curved “feet” feel somewhat rubbery. The USB 2.0 port, according to tech support, can’t be used at the time of this publication, but will eventually serve a purpose in the future.

The whole point of systems like Eero is that customers plug-and-go without having to think about channels or security.

Inside the Eero you’ll find a dual-core processor clocked at 1.0GHz, 512MB of system memory, and 4GB of internal storage used solely by the operating system. They also each have a Bluetooth Smart Ready component, and two internal incoming and outgoing antennas providing 2.4GHz and 5GHz bands. Each unit is capable of up to 300 megabits per second on the 2.4GHz band and up to 867Mbps on the 5GHz band.

Based on the company’s FAQ, Eero seems to believe that coverage is more important than offering the fastest wireless speeds, and that makes sense. Until the mass population has a gigabit connection to the internet, crazy fast wireless speeds are unnecessary. As Eero points out, streaming Ultra HD content to a single device requires a connection at 25Mbps.

Note that the connection issues we had with setting up the second unit had nothing to do with its ability to broadcast a network signal. Instead, the problem was with the unit trying to register itself to the account through the smartphone’s Bluetooth connection.

There’s a few other things we need to point out before we get into performance numbers. Eero supports a very basic Quality of Service capability, which may be expanded in the future to provide configurations that match specific needs for gaming, video streaming, and so on. The system does not support Point-to-Point Protocol over Ethernet (PPPoE), which is used for DSL connections. The system currently isn’t supported outside the United States either, as Eero is certified to only work on 120V power outlets.

So how does the Eero network perform?

We used four devices to check their connection speeds: one smartphone, two tablets, and a notebook. Here is what we found:

	Samsung Galaxy S7 Edge	Samsung Galaxy Tab E	Microsoft Surface 3	Lenovo Ideapad Laptop Internal	Lenovo Ideapad Laptop External
Eero Max 5GHz Speed:	867Mbps	867Mbps	867Mbps	867Mbps	867Mbps
Device Max 5GHz Speed:	867Mbps	450Mbps	867Mbps	Not Measured	433Mbps
5GHz Tested Speeds:	650Mbps	150Mbps	790Mbps	Not Measured	433Mbps
Eero Max 2.4GHz speed:	300Mbps	300Mbps	300Mbps	300Mbps	300Mbps
Device Max 2.4GHz Speed:	400Mbps	300Mbps	400Mbps	150Mbps	150Mbps
2.4 GHz Speeds:	Not Measured	150Mbps	Not Measured	72.2Mbps	Not Measured

The tested speeds are based on numbers provided by Android and Windows 10. As shown above, the Samsung Galaxy S7 Edge smartphone doesn’t hit the theoretical 867Mbps Wireless AC speed, but it didn’t reach that ceiling on similar mesh-based network setups either. Meanwhile, the Samsung Galaxy Tab E tablet is bottlenecked by having only two internal antennas (1x output, 1x input). If anything, the device with the best performance was Microsoft’s Surface 3 tablet.

As for the Lenovo laptop, the 72.2Mbps speed on the 2.4Ghz band isn’t anything new. That’s because the internal Wireless N component has one antenna for output and one for input, so the width of the wireless connection is important. Eero is likely broadcasting a footpath-sized narrow connection, and we know the laptop doubles to 150Mbps when it’s connected to a wide, freeway-like connection (we saw this with Netgear’s Orbi system). The external, dual-band Wireless N adapter we connected to the Lenovo in our test was Trendnet’s AC600 Mini Wireless USB Adapter that’s capable of up to 433Mbps on 5GHz, and up to 150Mbps on 2.4GHz.

Of course, the Lenovo laptop originally hit the market in 2013. It’s not that old, but in terms of how fast technology advances, it’s way out of date. But not every customer will have a sparkly new laptop connecting to a sparkly new mesh-based wireless network. The bottleneck suffered by the Lenovo laptop is a good example of why customers need access to the roots of the network to squeeze every drop of speed out of their wireless connection.

Mesh-based networks tend to limit customization

Unfortunately, the trend to lock down most of the settings in mesh-based networking setups appears to be a common factor save for Netgear’s Orbi system. Thus, systems like Eero and Luma may not be ideal for gamers who need full control over where data packets travel across their network. And without a real QoS service to dictate what device has priority over others, even mainstream customers may experience issues streaming content on multiple devices.

Now here are the speeds and signal strengths picked up by the Samsung Galaxy S7 Edge smartphone at various locations throughout the house:

Location	Speed	Strength	Signal
Dining Room	650Mbps	100 percent	-34 dBm
Living Room	351Mbps	62 percent	-73 dBm
Front Porch	585Mbps	91 percent	-57 dBm
Bathroom Shower	468Mbps	100 percent	-46 dBm
Laundry Room	585Mbps	82 percent	-63 dBm

The dining room is ground zero, as that’s where the first unit is connected to the modem. However, the living room took the biggest performance hit because of two walls that blocked the connection. The front door is made of glass, thus the connection to the front porch stemmed from the living room unit and the unit in bedroom #3. The laundry room had a good connection due to a somewhat direct line of sight to the unit in bedroom #4.

Eero isn’t feature-rich when it comes to customizing.

As a reference, we saw different numbers with Netgear’s two-unit Orbi setup. Using the same Android device to test the connection speeds and strengths, we saw 780Mbps in the dining room, 650Mbps in the living room, 97Mbps on the front porch, and 260Mbps standing in the bathroom shower. That said, the numbers may have everything to do with the positioning of the satellite systems, as the Orbi satellite was previously placed in the living room whereas we chose to move the second Eero unit out of the living room and into bedroom #3.

For better coverage, we presume that an additional Eero unit placed in the far corner of the living room might provide connectivity in that area, and perhaps even an additional unit located in the far corner of bedroom #1 as well. The drawback to purchasing additional units is that they cost a hefty $200 each, which isn’t cheap.

Our Take

Eero appears to be a great system for customers who want a plug-and-go solution. There’s no back-end web-based interface or detailed settings to deal with, just a mobile app to manage some of the generalized details. However, PC gamers and enthusiasts who want to control every aspect of their network may want to look elsewhere, such as Netgear’s Orbi system, which provides better detailed manageability.

Is there a better alternative?

The DT Accessory Pack

Honestly, we’ve tested quite a few of the new mesh-based setups and they appear to be similar in nature save for the Netgear Orbi system. We liked the Orbi specifically due to its robust customization capabilities. However, our current top pick in this arena is the Securifi Almond 3 router, which can be used as a mesh networking device even though it doesn’t ship as a kit. The Almond 3 also as a nifty built-in touchscreen and solid smart home support.

How long will it last?

Mesh-based networking appears to be here to stay. It may eventually replace the router due to the coverage capabilities of multiple units creating a web of connectivity as a single access point. It’s also better than adding a wireless extender to a network for filling dead spots because the signal has already degraded to a point when it’s picked up by the extender. Mesh networking promises full coverage no matter where users move throughout the home or office.

Should you buy it?

Only if budget is not a factor. The Eero three-pack kit is rather costly, and extending its coverage means shelling out $200 per additional unit. That’s a huge investment given that the mass availability of faster Wireless AD devices and networks will be in full swing by the end of 2017. Still, for now, the Eero is a good system for mainstream customers.

Saturday, May 6, 2017

Copper pipe electrolysis from touching galvanized steel?

Read article : Copper pipe electrolysis from touching galvanized steel?

topic 24664

An ongoing discussion from 2003 through 2016 . . .

(2003)

Q.I recently had a 1/2" TYPE L HMP flexible copper pipe that sprung a leak, unfortunately it was inside the wall going up to the second floor. After splicing the pipe where it was leaking another spot started leaking. I noticed inside the pipe a bunch of green "blobs" & the outside of this (HOT) water pipe a lot cleaner than the other pipe (COLD) that would have been put in at the same time, 20-25 years ago I'm guessing. I did notice one spot where the copper pipe was touching an old galvanized pipe seemed to be wet and green. Could there have been some electrolysis going on that caused this pipe to start getting finer than pin hole leaks & how much damage might have been done to the rest of the plumbing if that is the case?

THANK YOU FOR YOUR HELP,

Alex H [last name deleted for privacy by Editor]
do-it-myself-er - Cedar Rapids , Iowa

(2003)

A.Copper pipes can corrode in at least three different ways, but the differences are quite technical. I would suggest that the corrosion could be induced by a galvanic couple caused by contact with the galvanised pipe and this results in an induced local anodic polarisation of the copper pipe. I would normally expect such a failure to occur where the two pipes come into contact, but if this point is dry, no corrosion will occur and the effects of the galvanised pipe will be transmitted onto the copper pipe where it will react in a more favourable wet environment. Your photograph clearly shows the green copper salts on the inside of the failed straight pipe, so it must have been in an area where the copper is oxidised and failed. The propensity for copper pipes to fail is related to how the pipe was made, the local water composition and the environment it is used in. I would suggest there may be other not be other problems with your copper pipes, as there has already been a failure of an induced polarity, but if there are other non-compatible pipes in contact with each other, there could be a repeat of this. It may be wise to ask a plumber to check your system out.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK

(2004)

Q.I was told by a local plumber that electrolysis can occur in copper pipes when the hot water heating system is part of a forced hot water boiler system. The solution is to put nylon fittings between the copper connections and the galvanized boiler system so as to prevent any electrolysis action from taking place in the copper pipes running throughout the building. I would like to get other opinions since this is an expensive fix and it takes a long time to determine whether the fix in fact works.

Dan W [last name deleted for privacy by Editor]
property management - Juneau, Alaska

(2004)

A.It is the right advise, Dan. For galvanic corrosion to occur you need a metallic circuit and an electrolyte circuit. If you break the conductive metal circuit between the copper and galvanized pipe, galvanic corrosion ("electrolysis")" does not occur. This is not to say that no form of corrosion will ever occur though.

Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

(2004)

A.Copper pipe failure began to occur approximately eight years after completion of a new home in Brewster Co. Texas. The leaks were always in the cold line.

A split-core ammeter revealed a slight current flow between the steel gas pipe and the hot side of the copper system. No current could be detected between the cold copper pipe and the hot, or the steel gas line. This led me to conclude that the cold line was acting as a sacrificial anode between the other two while absorbing all voltage drop.

No electrical bonding could be found.

My solution was to isolate the steel line (which included some galvanized parts), from the copper system with a PVC adapter.

Current flow cannot now be detected unless a jumper is placed between the steel and copper.

Is the problem solved? I don't know! What can be said is that there is no further measurable evidence of electrolytic activity in this particular system.

Sam D [last name deleted for privacy by Editor]
- Alpine, Texas

(2004)

A.As others have mentioned, there are three different ways for holes to develop in a copper line, and I have seen all three.

A typical trade mark of electrolysis is pit on the inside of the pipe where the electrical current has actually eaten away at the piping, this doesn't sound like what is going on.

Another way is corrosion from the outside, normally when the piping in in a damp location with high acid soils, or even in an unsealed sleeve (copper run inside another pipe, usually PVC, and normally from the meter to the house). This is evidenced by pitting on the outside of the pipe.

The last one I have come across, and am still researching, is what it sounds like this gentleman has. It typically will have build-up on the inside of the piping and will often times leave large "blobs" of build up. I don't know what this is for sure, but I do know it isn't electrolysis, and it has nothing to do with water that is too clean (mentioned on another website as a possible answer). I think it has to do with the water quality to a certain degree, but I think it may be the molecular structure not the chemicals used. I think the buildup is a protectant for a "micro-atmosphere" high in maybe hydrogen. But I could be wrong, I am still researching this. I will post any further findings.

Jereme Grisenti
plumbing - Blountville, Tennessee

(2005)

Q.If we were to rivet or otherwise attach a copper sleeve to galvanized chimney pipe, would this cause the galvanized pipe to fail? We have fireplace chimneys on the beach. we have several copper clad chimneys that are doing well, but the maker went out of business. Now we have only galvanized pipe to work with and the outside of it corroding causes an eye sore.

Bryan Malt
- San Diego, California

(2006)

Q.This is a piggy back question.

Three 1/2 inch copper pipes running from my basement to the Laundry room one floor above show the same kind of erosion as the picture accompanying the original question. In each case the green copper salts and pin holes developed where the pipes pass through the floor. You can see the leaking water from below but not from the laundry room level.

After one of two plumbers to replace one of the leaky pipes stated that at one point he felt a very mild electrically shock, I had an electrician check the system. The electrician said he could not find a problem. The electrician checked the system before and after the plumber felt the shock. We could not duplicate the shock with the plumber or the electrician.

The plumber reinstalled the three pipes and wrapped the new pipes in electrical tape at the point where the pipes go through the floor.

Since we have not yet found a source of electrical charge would it be prudent to ground the copper line to an unused galvanized pipe so any current would flow to the unused galvanized pipe? Any help would be appreciated.

Greg Butts
- Stafford, Virginia

(2007)

Q.When copper pipes are plastered over into walls do they need to be protected from corrosion either by cement or plaster?

Mrs M Bridger
Homeowner - Steyning, West Sussex, England

(2007)

Q.I have a brick wall in my bathroom and want to cut a groove in the brick run the copper pipe inside and cement it back up. Will this have a long term effect on the pipe
thanks daz

Dario Ruberto
designer - Toronto, Canada

(2007)

Q.I have some questions regarding electrolysis, or galvanic corrosion between the copper and galvanized water pipes in my house. The house in on a municipal system and it is my understanding that acidic or soft water is not a problem in my area.

I have extremely low pressure in the upstairs bathrooms, and moderately low on the main floor kitchen. In my basement I have galvanized pipes coming in from the street, they supply the hot water heater, and they run the hot water for a few feet beyond the tank. At one point they are connected directly to copper pipes which take the hot and cold supply upstairs to the bathrooms.

I intend to replace the galvanized pipe, but I am trying to decide whether or not to replace the copper pipes going upstairs, and as well the hot water heater.

To make this decision I need to understand a little more about what is going on with the electrolysis. Before discussing the ramifications with the hot water heater, I have the following questions:

1. Where the galvanized and copper connect in the basement, does the electrolysis happen only locally? It seems that the electrons would travel only within the magnetic field created by the metals and therefore only affect the pipes within about a foot or so of the connection. Or, since the water exists through all the pipes, does the electrolysis affect the copper all the way to the upstairs bathrooms?
2. Once the galvanized pipe is removed, will the electrolysis cease? (I understand that new copper and old copper will also create electrolysis but I assume this condition is not as severe.)
3. I understand why galvanized pipe corrodes when coupled with copper but I don't understand why it is that the galvanized pipe becomes filled with gunk on the inside and restricts flow, I would think the corroding would make it get slightly wider on the inside, not more narrow.
4. If I remove the galvanized pipe, can I clean out the remaining copper pipe to make sure there is no corrosive material setting in them? How is this performed?

As far as the hot water heater is concerned, galvanized pipe feeds it and takes the water out of it, however, there is copper flexible tubing that actually connects directly to it. I assume this means the heater has corrosive material in it and will likely not last as long. If I leave the existing heater in place and wait for it to fail, will it contaminate any new piping that I put in?

Also, if I run the new copper water service through the front yard within a few feet of the gas line will this cause electrolysis? If yes, will it affect the pipes inside the house or just in the front yard? Which pipe will get holes and which will narrow? Can I insulate the copper to prevent this?

Justin Zavislak
buyer, hobbyist - Seattle, Washington

July 13, 2008

Q.I have type k copper coming from the main to the shutoff in the house. after reporting a leak it was dug up to be repaired and all was found was a pipe with walls that have thinned considerably and covered in grooves resembling termite damage on wood. it was also riddled with pinholes.

the ground for my electrical is connected to this pipe. could that be a possible cause. please help. there other houses in the area that have had there lines replaced twice in the last 20 years.

thanks, cy

cyrus lambert
hobbyist - conne river, Newfoundland, Canada

July 20, 2008

A.Where I work they were having problems with the copper pipes. The anode rods in the water storage tanks had been all wore down. Plumbers found the electrical system grounding rod had been disconnected & everything was grounding through the plumbing, causing the problems. You might want to check but I think it is a code violation now to ground through your plumbing only.

Alex Hatfield
- Cedar Rapids, Iowa

August 30, 2008

Q.I have a problem identical to to the lead in this thread. Green spots on rigid type L 1/2 in copper pipe with water seepage. This 14+ ft run of pipe is leading from my gas fired hot water heater (after a few short copper fittings) across the drywall finished basement ceiling to a T that feeds hot water to most of the house. I noticed a small spot of mold on the ceiling, cut it open and found this pipe with green spots like the picture above and two of the spots (at different ends of this one section of pipe) have water seepage. There are several other copper pipes , cold water and feeds for hot water heating that have no green spots,(only this one length of hot water has the spots) and also a flexible gas line in the same bay. My fix is to replace this entire length. A difficult job for me, tight spaces overhead, and hope there are no other bad pipe in the house. Please confirm the cause of this. Is it likely to be elsewhere or reoccur?

David Goldman
- W Milford, New Jersey

September 3, 2008

A.In response to the gentleman who experienced a leak on a 1/2 copper pipe and then he split it exposing this thick green blob running on the inside for some unknown length. well from dealing with similar repairs and from years of experience in the field this green corrosion that you are talking about stands far from electrolysis. this green gunk/blob is what we use to solder/sweat our copper pipes with better known as FLUX this product is applied to the outside of the copper pipe once it has been cleaned and reamed. putting too much flux on the pipe and fitting will cause the excess to flow into the pipe and will settle on the inside of the pipe until the system gets energized and water flows flushing out the excess flux. if it was not flushed out and was left as is; guess what? call your plumber.....thanks.

Armando Olvera
- Costa Mesa, California

September 14, 2008

Q.Within the last 9 weeks we have called the plumber 3 times regarding a 4 ft. section of hot water copper piping. Each time a pinhole sealing leak about 4-6 feet away from a recently replaced(5 months ago that our plumber installed) electric hot water heater. After replacing 2 inch copper pipe sections at a time we finely asked him to change a length of pipe but, only last night we developed another leak, a foot over from the new pipe, closer to the water heater. Our house is 15 years old and we use city water. The leaky pipe had green discoloration at the leak points. The plumber says this problem could be expected in this area in homes using well water after about 20 years due to the highly acidic soil but we use city water and our pipes are in the sealing. He's suggesting we may need to replace all of our pipes but it seems strange that the leaks are all near the water heater. Could the water heater be faulty or it's installation be the problem?

Chris McQuillen
homeowner - Crescent City, California

September 14, 2008

A.Hi, Chris. I'd be pretty confident that is has to do with something electrical rather than well water. I think I'd call an electrician rather than calling the plumber again.

Regards,

Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

(2005)September 30, 2008

Q.can a copper water line be spliced to an existing galvanized water pipe line?

Keith Medved
- Dyer, Indiana

A.Hi, Keith. When you transition from one kind of metal pipe to another, the correct thing to do is to use dielectric unions =>

These are unions that include a plastic insulator so there is no metal-to-metal contact. I'm not saying that this is always done, but it is the right way to insure that there can be no galvanic corrosion.

Regards,

Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

October 24, 2008

Q.How can one determine the cause of frequent deterioration of a 3/4" copper water supply line? The section going bad is located underground at the block wall of the foundation. The home owner had to replace this line two times within the past year. The deterioration seems to occur on the outside of the pipe. There were no problems prior to the first replacement of this pipe section 9 months ago. The home has city water and uses a sump pump due to a high level of ground water. I don't know the pH level of the water. The basement is dry, but uses on a "floating slab" to channel away the ground water. I conducted load tests of the electric panel to verify the electric wiring. All tests proved satisfactory with only about .2 amps or less flowing to the ground wire. This is when a 35 amp load is applied to each 120 volt leg. This proves that practically all current is flowing back through the neutral conductor. The electric service is lacking the required two, 8 foot ground rods. There is only one ground rod, and it appears to have been installed as a ground for the telephone system. At this point I'm thinking the corrosion and deterioration was not caused by excessive current flowing top ground via this water supply line.

Dave Baylor
- Pittsburgh, Pennsylvania

May 22, 2009

Q.Hi, Our house is 6 years old and from the time we moved in we have had this "green" problem. It has ruined my hair and has left stains in the sinks and toilets. We have had 2 different water softeners and 2 water heaters. We discussed this with the last water softener person and I guess they didn't have a clue about this problem. No one has until I
talked to some nerd at the company that tests the water for the city. He said that it was probably because of the fittings that the water softener company put on the copper pipes and if we didn't rectify the problem, we would eventually have pin size holes in the pipes and leaks! What do we do, who do we call and how do we go about fixing this problem! I want long hair again! Thanks!

Kathy L. Maxwell
- Grover Beach, California

December 8, 2009

A.While replacing the copper piping in a 150 year old home, I was puzzled by the green buildup inside of the pipe. Tracing the pipe I discovered that a ground clamp and wire from the circuit breaker box was connected to the cold water line 15' from the water meter where a jumper wire was also connected to the pipe from the street. In the circuit breaker box the Neutral buss was bonded to the Ground buss. That was okay. I also checked the sub panel to make sure the Ground buss and Neutral buss were not connected.

The wire mains from the electrical meter are aluminum. Current will find the least path of resistance, therefore current leakage to the piping is occurring. The remedy for this is to drive a conductive rod into the ground as deep as local code requires and connect a ground wire. Additionally I moved the ground clamp to the incoming side of the water meter, and removed the grounding jumper. As the water meter has dielectric connections the leakage can not return into the water piping since it is no longer grounded.

Bert Cooper
Equipment Designer - Williamsport, Pennsylvania

June 11, 2010

Q.Type K soft copper pinholes. We are having numerous issues with 3/4" and 1" and even a couple 2" services running from the mainline in the street to the property. 10 years ago or so we started having pinhole leaks appear on the copper always next to a flaired fitting so naturally everyone blamed it on a bad flair, then the specs changed and we were allowed to use compression fittings. This is now happening with the compression fittings as well, now everyone is blaming it on not de-burring the copper properly.

We just had to dig up a leak and found the pinhole leak in the middle of the 1" copper run (no fittings even close) and the copper was in a 4" sleeve under a major street which would eliminate the corrosive soil theory which the supplier will want to use, also the leak was on the top of the copper so a rubbing situation is not the answer. I have a question, is it possible for the copper at the time of production to have impurities introduced causing an electrolysis situation? Do you know of any other town having this problem. The suppliers here have no idea and have never even heard of this problem before which I find hard to believe. Thank you for your time and opinion

Bill Williams
water company - Tucson, Arizona

September 9, 2010

Q.I have recently installed and new water softener with an aerater in my home. My home is 26 years old and several weeks after the installation I noticed a blueish/green tint. I have had the water tested and the copper level is high, can the new system cause this?

Rachele Cancia
home owner -Sunrise, Florida

November 26, 2010

Q.I had an odd situation and was wondering if there is a known reason.
Last evening we noticed water dripping from the ceiling. Upon cutting open the ceiling, I noticed that the 3/4 hot water heating pipe (not sure if supply or return) was pressing firmly against the 1/2 hot water supply pipe, and that a leak had developed in the (smaller) hot water pipe where they touched. Fortunately, the heating pipe was connected to flexible copper to go up through the floor, and I was able to push the pipes apart and repair the supply line easily, but I am concerned what might have caused this leak.

Mike Paulson
former kitchen contractor, retired -falls church, Virginia

December 17, 2010

Below is an excerpt from Wikipedia's "Tap Water" page at en.wikipedia.org/wiki/Tap_water

"Pin-hole leaks can occur anytime copper piping is improperly grounded and/or bonded; nonmetal piping, such as Pex or PVC, does not suffer from this problem. The phenomenon is known technically as stray current corrosion or electrolytic pitting. Pin-holing due to poor grounding or poor bonding occurs typically in homes where the original plumbing has been modified; homeowners may find a new plastic water filtration device or plastic repair union has interrupted the water pipe's electrical continuity to ground when they start seeing pinhole water leaks after a recent install. Damage occurs rapidly, usually being seen about six months after the ground interruption."

Q.So if I understand this correctly, adding a union may cause this problem? How does one connect copper pipe to galvanized steel then, or how to bond from copper pipe (cold water line, for example) to iron pipe (gas line, for example)? What materials is the bond conductor made of?

Andy Roberts
-Maynard, Massachusetts

May 13, 2011

A.I have seen electrolysis occur with galv. steel straps, hangers and supports, with copper. It usually occurs at the point.
Pin Hole leaks are mostly caused by incorrect installation of plumbing pipes.
For example, If a plumber uses a pipe cutter, to cut a pipe, it leaves a ridge on the inside of the pipe. This causes a ripple in the flow of water going through the pipe, and will eventually start eating away at the pipe, from the inside out. This was a common occurrence back when track homes were booming, and the track rats were doing high volume production, and not installing correctly.
You can verify this, by separating the pipes at the soldered joint, and stick you finger in the pipe and feel the edge. If you feel a sharp edge, then the fitter never filed the inside edge to remove this. Which this is why it will happen in multiple places in your home. Also the reason it happens more to cold water lines, is because you use your cold water more that your hot.

Keith Van Aalst

-Anaheim California

February 3, 2012 -- this entry appended to this thread by editor in lieu of spawning a duplicative thread

Q.I need to run natural gas to an outside heater. I have a 3/4" gal water line which is no longer used, am hoping to run type 'L' flex 1/2" copper line thru this line to supply gas to out side heater, is that possible or is there something I could wrap the copper with to make it work?

Bob Hendrickson
-Pontiac, Illinois, USA

February 25, 2012

Q.I have a bunch of copper fittings. 1/2", 3/4" & 1"; I had the fittings for a year or more. Some of the fittings are starting to get corrosion on them, a greenish thick coating. What is causing this and how do I control/stop it. All the fittings are new and never used.

Ken Kramlich
-Sacramento, California, USA

February 27, 2012

A.Hi, Ken.

Copper corrodes, but usually not that quickly. The simplest fix is probably to put them in a plastic bag with desiccant. Sodium benzotriazole is a copper preservative. You can use brass lacquer if you are trying to protect them for artistic rather than functional use. Good luck.

Regards,

Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

December 18, 2012

A. After reading all of the postings about plumbing -
There are a lot of factors to touch on.

Any type of pipe can be connected to a different type of pipe with the right connectors that can be found at big box or good hardware store.

The green spots inside or outside of a copper pipe is cause by Flux.
Flux is an acid that is used by plumbers when the copper piped is fitted together and soldered.
When a plumber puts too much flux on the copper fittings or pipe - It stays inside the pipe and causes the pipe and or fittings to corrode because the water does not get hot enough to melt flux in order to get it flushed out of the pipe or fittings.
Even if you air pressure out the lines, all of the flux will not move out of the copper pipe because flux is a paste, and what little amount of flux that does move will stick to any joining type of Copper or Plastic or PVC or Galvanized pipe or fittings.
Green spots on the outside of a copper pipe or fittings usually means the plumber did not wipe off any left over flux on the out side of the copper pipe or fittings, or the copper pipe has started to corrode from the inside out from using too much flux inside the pipe and the flux has made its way to the outside of the copper pipe or fittings and needs to be replaced.

As far as electric or electric ground going through copper - Electricity will slowly soften up the excess flux that was used on the copper pipe or fittings.
As the flux softens, and because Flux is an acid, it will slowly break down the copper pipe or fittings and needs to be replaced.

NOTE:
Most electric or electric ground going through a copper pipe is not a high enough voltage to melt flux -- it will only soften the flux.

NOTE:
If your phone line is grounded to the copper line then this alone is enough to soften the flux.
If you put some flux on both the neg. and pos. post of a small charged 9 volt battery you will find that the flux will soften.
If you leave the flux on the battery the flux will corrode the battery because flux is an acid.

NOTE:
If your phone or cable is grounded to your copper pipe this is enough electric for a person to get a small shock when touching the copper pipe.
After a person touches the pipe and gets a small shock, it takes quite a while for the electric to build back up because the voltage is quite low.
It is because the voltage is so low that when a person touches a copper pipe and gets a small shock you have depleted the electric in the copper pipe and a shock will not happen again until the electric builds back up in the copper pipe.

NOTE:
Anytime you have to run a copper pipe behind a wall that will be closed in, only use HARD copper pipe (NOT ROLLED TUBING OR SOFT TUBING). Place the copper pipe inside of a piece of PVC pipe and do not have any fittings or couplings that have been soldered inside the PVC pipe.
If you need to soldier on fittings - Solder the fittings on after you have cleared the wall that will be closed in. It will also be helpful to use liquid foam between the copper pipe and the PVC pipe to stop any pipes from clanking when the water is turned on or off. You can pre make up the pipe with the foam in order to let the liquid foam set up.

I hope this information is helpful.

Jim Drake
- Fredericksburg, Virginia, USA

April 20, 2013

A.To those dismissing the "green blobs" as residual flux are not understanding what I think are the inquisitors' issues. We built our home in 2004 and within a couple of years we started experiencing problems in our master shower. Initially, I was able to disassemble the hot water supply in the manifolds and clear out the green "blobbish" crystals. Our master shower is large and has multiple shower heads and two shower manifolds. Since then the problem appear to only exist in the master bath "hot" water lines. I have never had any issue with the cold water lines.

To give a little more detail. The green blobs I am experiencing a hard crystals and not any type of pasty or flux consistency. I have found galvanized steel nipples between the copper supply lines and the brass shower fittings. Two years ago the galvanized nipple on the shower with the most serious blockage, had nearly corroded away completely. Fortunately I had decided inspect the inside of the shower wall after suspecting some sort of "electronic" cause. This morning I found the same union on the second shower head that is now almost completely blocked.

I should have recognized something was wrong in the construction of our plumbing lines during the build simply because of the sloppy solder joints. I have a rudimentary knowledge of plumbing as my father was a plumber. Unfortunately, I was traveling extensively and didn't have time to address the bootleg plumbers my builder contracted.
I guess I was depending on the inspectors to alert us of any issues, but I have learned that lesson.

In summary, I would conclude that the green crystals are formed from kind electric current activity in addition to the hardness of your water. Our municipal water is very hard and my water softener is worthless so we are going to rip out the bathroom walls to see what other surprises we have in store and get a new water softening system.

Vaughn Broadnax
- Carmel, Indiana, USA

May 21, 2013

Q.During a bathroom remodel, the plumber used some metal strapping (likely galvanized steel)to further secure the copper piping from the shower valve to the shower outlet. (see photo) Days later, my contractor had secured a loose toilet supply valve with a plastic part and explained that a metal material could negatively interact with the copper and eventually cause a leak. (I think he himself had just come upon this info when he went to home depot to pick-up the part.)
I then remembered seeing how the plumber used the metal strapping to basically tie back the copper piping. The wall has since been scratch coated and is about to be floated. I've alerted my contractor about this and am awaiting a reply. I really do not want the float to happen until I know for sure that there is definitely no problem with the set-up, or, until it is corrected. Any input on this would greatly be appreciated.

Jack Goldstein
- Mission Viejo, California, USA

May 22, 2013

A.Hi Jack. You need 3 things for galvanic corrosion:
- dissimilar metals so there is an inherent voltage between them,
- metallic contact path between the two metals so that electrons can flow from one metal to the other,
- a moist and conductive ionic path so that positively charged ions can follow the electrons, transporting atoms of metal from one point to another.

You certainly have the first two, but whether the third condition is met well enough for serious concern is always the question, and sometimes hard to define. When such a condition is sealed behind a wall, it sounds to me like poor practice -- then again, I'm not a plumber. You might see if you can find anything in the plumbing code about it. The problem would have been easy to avoid with any kind of plastic between the pipe and strap; you can hopefully get a scrap of Visqueen in between them without much damage to the wall. Good luck.

Regards,

Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

June 3, 2013

Q.Having pin hole issues on the cold water line repeatedly over approx. 8 years -- same area.
The house used to have copper pipe coming in from the street and we did not have a ground strap on it. I can see how the pin holes would happen then. Then the copper pipe was replaced with PVC out to the street so there seemed to be no need for the ground on the street side of the meter, but I left the ground connected on the house side (still copper here). Was this wrong? Still another pin hole problem this year.
Tired of water leaks, Tom

Tom Canarecci
- Mishawaka, Indiana, USA

July 11, 2013

Q.We have an apartment building that keeps getting leaks in the first apartment. I have read everything and understand the problem, but we don't have money to replace all the pipes, so every few months there is a leak. The last time we had to replace all the carpet because it was leaking over a full weekend.

I have been told by one plumber that he heard of a product that can be put in the pipes that would coat the insides and help prevent the pinholes from developing.
Is there any such product?

Also someone told me of a product that can be painted on the pipes like a silicone or latex component that might be able to help.

If you know of any products like this that I can try, please let me know.

Thank you.

Lisa Keylon
- Fountain Valley, California, USA

February 11, 2016

Q. I just noticed there is corrosion at the elbo 90 connector of hot water copper pipe going out of water heater. Both are copper pipes - so wondering what's causing the corrosion. Otherwise I'm planning to
Simply planning to use fix-it stick/Keeny pipe wrap tape as temporary fix until I get time to call plumber to cut the pipe and rejoin.
Please advise:
1) is it ok to fix temporarily
2) if I need to dig in further to find the cause before I fix it.
3) are there any other things I need to check / replace while I'm fixing it.
Btw- this is house is 10 yrs old.

Venu Reddy
- Waukee, Iowa

April 8, 2016

A. You can also use a brass nipple between copper and galvanize .

Rodolfo ruiz
- Pasadena California usa

April 2016

Thanks, Rudolfo. Yes, you can use a brass nipple between them ... but I don't think it will do much towards stopping galvanic corrosion.

Regards,

Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey
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