Can Expansion Tank Be Installed Upside Down

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Q&A / Water Heaters – Expansion Tanks text: Tim Carter Water Heater Expansion Tank TIPS:. Must be sized to the heater. Installing sideways is a leak potential. Follow install instructions. Use pipe thread compound, not teflon tape.Virtually, every modern plumbing code requires the installation of an expansion tank on hot water heater installations. The reason is simple.Water expands when heated.

This extra volume of water needs to go somewhere.Back Out To The MainBefore the widespread usage of back flow preventers, check valves and pressure reducing valves, this expanded water simply pushed the cold water back into the city water main.If your house has one of the above mentioned devices, you could have problems. These devices prohibit the flow of water from your house back into the public water system.Without an expansion tank, the expanding water can cause your hot water heater to possibly fail because of the increased pressure. This pressure can cause serious life threatening problems as well, if you heat your water with natural gas or propane.The water heater tank can collapse around the internal flue and cause carbon monoxide to enter your home.

It's serious business.Expansion TanksExpansion tanks are really simple devices. They contain compressed air and a special rubber bladder.When your water heater turns on, the water within your piping system begins to expand. This expanding water enters the expansion tank. Eventually, hot water is drawn from the system thru a faucet and the expansion tank releases the extra water into the piping system.Different SizesExpansion tanks come in various sizes. The size you need depends upon two very important variables:. water heater capacity in gallons.

water pressure of your water supply systemThe capacity of your hot water heater is stamped on a label or a plate on the side of your hot water heater.Water pressures within municipal water systems vary widely. I used to live in Cincinnati, Ohio.

There the water main pressures could vary from 50 pounds per square inch (PSI) to over 200 PSI within a distance of a mile!This same thing may be true in your city.Well Water PressurePeople with cisterns or wells control their own system pressure thru the use of electric pumps. I now live in a rural area with a water well.My well pump delivers 50 PSI. You can purchase booster pump systems to get the pressure higher. I'd not recommend an internal water pressure in a residential home above 75 PSI.DIY Pressure TestingIt is easy to determine your incoming water pressure. This is a good expansion tank. You can see how they connect at the top to the plumbing water pipe. CLICK THE IMAGE NOW TO ORDER ONE.Be sure to follow the directions that are packaged with the expansion tank.

It only takes a few moments to read them. This will insure that your tank will function properly.If you install a pressure reducing valve to control water hammer, be sure to buy one with a bypass feature. Without this, your water heater will begin to malfunction. You will see water dribble out of the pressure/temperature safety valve without a doubt.The reason lies in the fact that heated water expands.

Without a pressure reducing valve, this expanded water can easily go right back outside to the water main. Low quality or malfunctioning pressure reducing valves block this backwards flow of expanding water.An inexpensive expansion tank installed on the cold water side of your hot water heater will solve this problem.

The tank absorbs the expanding water and then releases it once hot water is drawn from the hot water heater. They are simple yet effective devices.Installing an Expansion TankThe first thing you need to do is to size the expansion tank according to the size of your hot water heater. The tank manufacturers make this easy.

All you have to do is to determine the capacity of your hot water heater.This is always stamped on the side label of the hot water heater. You may have a 50 gallon or 80 gallon or whatever size hot water heater. Take this information to your plumbing supply house to get the right sized expansion tank.A Simple Tee FittingThe expansion tank installation requires you to install a simple tee fitting in your cold water supply line. I like to install the tee, when possible, on a horizontal run of pipe, not a vertical piece.Out of this tee fitting you should extend a piece of pipe towards the floor. Many plumbers will just try to hang the tank up in the air.This causes all sorts of stress on the pipe and fittings.

Imagine holding out your arm with a half-filled two-liter bottle of soda. Your arm gets fatigued and so will the pipe.It's better, in my opinion, to install the tank on the ground with a ball valve shutoff valve about a foot above the tank. Place the tank on some wood blocks. You can see the yellow handle of the shutoff valve above the tank. Note the wood blocks.

© 2017 Tim CarterDoing it this way allows you to easily change out the tank without cutting off the water supply to the rest of the house. At some point, you'll have to install a new tank as they can get waterlogged.Be sure to ALWAYS read the instructions provided by the manufacturer.The tanks simply have a threaded connection. You will install the opposite type threaded adapter to your tee fitting.

Apply Teflon tape or pipe dope to the male threads and screw the tank onto the fitting. To get a tight fit, you may have to use a pipe wrench or a leather belt around the tank. Most tanks come with a place to attach a tightening wrench.

Follow the instructions and this can be done in 1/2 hour or less!Column B192. I have been getting pulsating water periodically. I am thinking my expansion tank may have failed.

I have a pressure regulator on the cold side of the line near where the water enters the house. My expansion tank is on the outflow side of the hot water heater and hung under the line - two things I believe were ill advised per the guidance in this blog. Do these tanks fail? I am wondering if mine has failed due to the placement and way it was installed perhaps made it wear out prematurely. Thanks - Ian.

Had a new hot water tank installed last summer and since I blow all of the water out of my system for the winter in Vermont, I was suprised that the expansion tank ruptured on the bottom. Kind of a big mess when I turned on the water supply this spring and flooded the downstairs below the ruputured expansion tank. This has never happened before ( more than 25 years of draining my system). I suspect that it was a faulty expansion tank because I was getting water from the pressure relief valve during the weeks following installation.Now I'm thinking my old expansion tank was mounted Input down meaning it looked upside down but the new installation is opening up like a bottle. This might be why water remained in the tank and made it rupture? Finally my question - Should I re- orient the expansion tank with the inlet down or is that not a good idea?

I just paid $55 for this new expansion tank and now I am not getting water from the pressure relief valve as I did with the old bad ruptured tank. Thanks in advance for any help. I need to know the truth about expansion tanks; I recently contacted two plumbers and got two different answers.

The problem I am having is I have little black deposits coming from my hot water faucets. I called my insurance company to see if the tank was covered, they in turn sent out a plumber to check out the problem, which he said it was the expansion tank improperly mounted or should I say incorrectly placed. He informed me that the tank should have been placed on the right (cold valve) instead of the left (hot valve). I contacted the builder and he in turn gave me the person who installed the expansion tank.

Expansion Vessel Which Way Up

After contacting him and explaining to him the problem he insisted that it was improperly installed and it didn’t’ make a difference which side it went on; and all that was needed was for me to drain the hot water heater and replace the expansion tank and everything would be fine. Now, the plumber that was sent by the insurance company said the hot water heater needs to be replaced installed correctly or the problem would continue. Everything I have read online tells me the tank should have been installed on the cold valve. So which should I believe and what is the best course of action for my problem? Our home has a circulating pump on the water heater with a timer on the pump, works great instant hot water on the first floor to all fixtures baths and kitchen with the loop system. The problem is the second floor bathroom takes at least 1-2 long minutes to get any hot water at all in the shower or sink.I noticed the hot water supply for the 2nd floor bath is tee'd off the first floor return loop about 10' from the water heater. Why does it take so long to get hot water?

The 2nd floor bathroom is only about 25' from the first floor outside water heater. I also notice there is not a check value on the loop pipe in front of the circulation pump. Please help if you can any suggestions. Hey Tim – Gary here in Raleigh, NC. I have been a commercially licensed plumber since the early 1990's - and have a few comments to share about “thermal Expansion”. 1) The whole sizing aspect, per what's on most every TXP box we have seen - is actually WRONG!To better understand this; one has to know that the IPC (International Plumbing Code) states that 80psi is the maximum pressure allowed on a plumbing system ( 604.8).

Can Expansion Tank Be Installed Upside Down

As a protection device to keep the water heaters from becoming an explosive vessel – the T&P relief valve on the water heater operates (or, relieves water) at 150psi or 210F as a safeguard. 2) The MFG’s (with their sizing targets) appear to be following the premise of meeting “minimum standard compliance” – so long as their not any evidence of discharge at the T&P valve outlet (or, 150psi) – which would be 70psi in excess of the 80psi maximum. Did you go to Amazon.com to see what the expansion tanks cost, the copper and the valve?You got paid for 8 hours when you used to work, shouldn't the plumber?

He's got to drive between jobs and to get supplies. By shutting off the water on the upstream side of the expansion tank, then opening a hot water faucet downstream and allowing the tank to blow down, I measured a gallon of water blown out of the 2-gallon expansion tank. This suggests that the charge pressure is too low. Since the faucet was about 6 feet above the tank, if the bladder were ruptured it would have blown down to roughly one atmosphere (14.6 psi) plus 6 ft multiplied by 0.44 psi/ft, or 17.24 psi absolute (2.64 gage), which would correspond to roughly 34.5 psi absolute (19.9 gage) prior to blowdown, assuming a constant temperature expansion of the gas in the tank (so that pressure times volume is a constant). (Constant temperature is a good approximation if you wait long enough for the blowdown to complete.) Since the pressure regulator is set for 50 psi gage (64.6 psi absolute), I conclude that the tank was not initially at 19.9 psi gage, and did not blow down to such a low pressure, therefore the bladder is intact and the tank merely needs to be pumped to a higher pressure.This method beats tap-testing with a coin. The foregoing assumed that all of the water was expelled from the expansion tank, leaving 2 gallons of gas at the lower pressure.

That is not necessarily true. If some water remained, the gas pressure could have dropped from 50 psi gage to 2.64 psi gage. In fact, with the tank mounted horizontally (as it is) and the bladder ruptured, it would have been half-full of gas and half water at end-of-blowdown, and at 50 psi gage the gas volume would be 17.64/64.6=0.27 gallons, so that roughly 0.73 gallons water would have been expelled.

In addition, any gas trapped elsewhere in the system (such as at the top of the water heater) would contribute to the volume of water blown out of the system. All that can be said is that the volume of water blown out is suspiciously close to half the expansion tank volume, so may represent a ruptured bladder. This can be detected by pumping air into the expansion tank, with water shut off upstream and open downstream, to see if the charge pressure is (or can be raised) above 3-4 psi gage. (If not, the bladder is ruptured.)Finally, a pinhole leak in the bladder would have still another characteristic, but should still be detectable by pumping-in air, then waiting to see if the charge pressure holds.Regarding the coin tap test, the vessel is probably too rigid for the human ear to distinguish between wet and dry inner surfaces. Tapping on different points would excite the various shell-modes differently, yielding different tones and easily deceiving the ear.

Hi Folks,I have installed 2 hot water heaters since we moved into our house in 1983.After replacing the 'original' heater (which was approximately 30 years old) I knew I was going to have to replace it shortly after the warranty had expired. Because of several factors. Cleveland, Ohio's water is very 'hard', the suburb we live in is the first (along with the neighboring suburb) are the first off the water reservoir at 140 lbs. Pressure!Obviously today's water heaters are simply not structurally/materially as well made. So on, again, the first installation I installed a pressure reducer since the safety valve was pushing a cup of water every night.On this last replacement (1/8/2007)I HAD to add an expansion tank and have had NO such problems since.Not only that but the tank's 5 year warranty is now nearly 3 YEARS over the limit and no problems.Of course again I feel that the actual material and structure of the tanks of the past 40 years are at the REAL heart of this problem. Why build the best when you can sell a whole new on every 5 years?!!!

Can Expansion Tank Be Installed Upside Down

Can Expansion Tank Be Installed Upside Down Crossword

I have a problem with some of these comments based on something I realized last night about 1/2 way done. Amtrol instruction specify that the hot water heater expansion tank be vertical with the connection up and the Schrader valve down. If you put it the other way you have made a double bladder because air gets trapped between the bladder and the supply side. The tank must be installed per their instructions so the bladder is lower than the supply line and any air in the tank or expansion lines can flow back to the supply side and be pushed out when a faucet is opened.

Can Expansion Tank Be Installed Upside Down Lyrics

We lay our expansion tanks on their side, right on the heater. We pipe in a tee a few inches above the cold nipple and screw the tank right into it. Other #2 used often around here is to mount the tank upside down right above the tee and use the bull of the tee to aim towards the back wall, turn up just past the tank, install your valve and pipe to the wall as your normally would.Hey Terry, what'd you use for the T&P drain?

Almost looks like a flexible gas line? At first I thought it was a s.s. Braided line. No reduction in pipe size there is there? To clear up a few things posted above. According to Amtrol (manucafturer of thermal expansion tanks) they are required to be installed in the verical position. Although the instructions show the thermal expansion tank being installed on the cold water side, they are rated for upto 150 degrees and there is nothing in the instructions or warranty that prohibits them from being installed on the hot water side.

I spoke to tech support at Amtrol and verified this information. Unless by local code there is no reason they cannot be installed on the hot side. Here is a link to the instructions Hope this helps.Paul.