How to join cast iron pipe or copper pipe to plastic pipe using fernco couplings.Plumbing Tips!

32 years of experience has taught me to use a few tricks when it comes to repairing plumbing problems. A reciprocating saw and a few metal cutting blades will cut your cast iron pipe and then you can attach your fernco coupling and you are all set to run your plastic pipe. When cutting cast-iron pipe it is best to buy blades that are better in quality as cast is very hard. I prefer Lennox blades with 18 teeth per inch and the gold brand if possible. You can try a set of cast iron cutters, but you are taking the chance of the cast cracking or crushing if it is old. Recipprocating saw works best for me. good luck...Please subscribe and have a great day.

[@bmcdonald7303]

These have saved me many a day with my old house. I have finally started to redo the plumbing but these are great.

[@TheOldkid888]

Hello bmcdonald7303, I couldn't agree more. They work very well and last for decades as long as no harsh chemicals are poured in the drainage lines. Thanks for commenting and best of luck with the project! Al

[@archangels4you593]

Thank you for sharing your experience and wisdom. Cheers Mate from a Contractor based in Japan. Jerry

[@TheOldkid888]

Hello Jerry, You are more than welcome! Hope all goes well in your future! Thanks for commenting and enjoy your week! Al

[@orangeteals]

Thanks. Saved me a ton a time. I didn't have to saw off a jagged pipe. My sink is now draining nice and smoothly.

[@gogo12able]

Thanks so much just made my day on a project am working have a great day men

[@TheOldkid888]

Hello jcgomez glez, You're more than welcome! I am glad everything worked out for you! Thanks for commenting and enjoy your day! Al

[@TheOldkid888]

Another way to reduce down in size from 3" to 1/2" is to use a 3" by 1 1/2" fernco reducing coupling and a 11/2' by 1/2" abs reducer.It comes in a 1/2" barbed or 1/2" female end;so it is just a matter of sliding the 11/2" end into the reducing coupling and tightening the clamp.Good luck and I hope that helped.

[@andy8218]

I've got a small leak in a vertical drain pipe that needs repair. This looks like the best way to solve the problem.

[@TheOldkid888]

Hello andy8218, This coupling will work for you, especially on a vertical pipe. The Fernco couplings are ideal for this type of repair. I know the big box stores carry them. Thanks for commenting and best of luck with the repair! Al

[@TheOldkid888]

Hello sgt; These style of couplings are only for drainage lines and will not work an a pressurized water line. The ABS pipe you are talking about is more then likely black poly pipe which is used for wells or underground waterlines. I would imagine the fitting that is corroded is galvanized rather then copper. You can get service fittings (fitting for underground waterlines) that are used on the black pipe you are talking about and also tighten on to copper. Let me know how you get along....Al

[@AwakeDude911]

thank you ! and now i know and knowing is half the battle.

[@stp479]

Thank you for a great video-well done! Cast is great material but requires a genuine skill set such as you have.

[@TheOldkid888]

+stp479 You are more then welcome! Thanks for the kind words! Greatly appreciated! I hope this helps with any future projects! Thanks for commenting and have a great week! Al

[@TheOldkid888]

@chaotic719playa Hello Patricio;You actually should use 2 ferncos if you are replacing or installing a fitting or changing a piece of pipe underground as you have no movement in any direction for the pipe to move. If you cut out that section, place a fernco on either end, drop your fitting with a piece of pipe glued in either end and then drop it in place and slide your ferncos over the new pipe. Thanks for commenting and have a great day!!! Al

[@sgtdraino]

Ah, I was wondering if pressure would be an issue. To look at it, it seems like a simple repair, if I just knew what parts and how to put them on. Would Lowes or my local Ace have these? If I said "service fittings" will they know what I need? Or should I just call a plumber?

[@TheOldkid888]

Hello Bill; You are more then welcome! Hope all goes well for you! Al

[@brewcabbage]

I'm going to be replacing a shower that drains into cast iron piping. I want to use a PVC drain for the new shower and connect it to the existing cast iron system. Is this the type of product I would use? Thanks!

[@billgator9083]

Thanks for the help, Have a nice weekend! Bill

[@Dicofol1]

How durable are those fittings for underground permanent applications for main sewer lines ? Are the seals tight enough to prevent tree roots from coming in ? Will the clamps rust overtime ?

[@Cyn333444555]

I see alot of NH cast iron joined with ABS on city subway station platforms. Always wondered if that's legal since it's visible and mounted outside where weather conditions can deteriorate the material. Very informative channel Al, thank you for taking the time to make these videos.

[@TheOldkid888]

1/2 " to 3" is quite a difference in pipe size.You can use a 3 by 11/2 reducing coupling, then use 11/2 by 11/4. You are going to need a dishwasher connection that will bring you down to 1/2".You will need a piece of pipe between the 2 couplings.One piece of 11/2 pipe for the first coupling and a piece of 11/4 for the second coupling to the dishwasher coupling that has 4 different sizes on it as it reduces down to 1/2 inch.Check at the store to see if it can reduce any easier.I don't think so.GL

[@TheOldkid888]

Hello AwakeDude911; I can tell you that it will last 25 years if that helps. I installed one back then and have had no trouble with it. They work very well! As long as the pipe has a good solid base under it you should have no problems for many years; if ever. Thanks for commenting and have a great week! Al

[@EJ313]

I wonder how long has these been around? Things are amazing!

[@TheOldkid888]

Hello EJ, They have been around for at least thirty years. Excellent product! They come in very handy! Thanks for commenting and enjoy your week! Al

[@TheOldkid888]

Hello Cyn333444555; I can't speak for New York. Every place is different. Some inspectors may pass it and others may not. Every time we get a new one here he wants something different. Fernco couplings have been around for many years. I believe they were first made in the U.S. and are now distributed to many different countries. I have been using Ferncos and MJ couplings for many years and had no problems. I don't think the weather will effect it! Thanks for commenting and enjoy your day! Al

[@MrArons21]

I am in need of possibly replacing a toilet soil drain from cast to PVC (havent removed the toilet to see what exactly I have down there yet)... Will this coupling work for me and how long will it last? I dont want 5-10 years down the road to have a huge plumbing issue because I used this really easy method.

[@TheOldkid888]

Hey sgt; Glad you got it repaired. A little easier on the head anyway knowing that it is fixed. I am glad to hear he used brass; the only way to go when it comes to underground fittings. If there is anything I can help you out with; please let me know. Thanks for commenting back and enjoy your week! Al

[@dustbowel20]

I wrote it down and I will buy them too. thanks

[@josephavila151]

would you suggest using on a horizontal drain line from the toilet?

[@TheOldkid888]

Hello josephavila151, I would definitely use it on there with no hesitation! snug it up good and you are set to go! i have used them for decades and no issue! Support on both sides of the fernco if you are burying it in the ground. Thanks for commenting and good luck with the project! Al

[@AwakeDude911]

ive used this on my sewer line only question i cant get answered is how many yrs will it last before it rotts out?

[@TheOldkid888]

Hey sgt; It may be a little bit of a task. When joining different types of material together it can be a little difficult at times. It can be a bit confusing and I apologize for that. Where I deal with a wholesale company when buying my stock; they know exactly what I am after. You may have luck with one of the stores, but it maybe worth your while to call a plumber. If I was your neighbor; it would cost you a cold one. Let me know how you get along and have a great day! Al

[@felipegmunoz]

You need a 60 pound torck wrench for any ho hub band or any fernco

[@angelgama1981]

Can I use this for outside drain that goes to the street? Buried in soil ????

[@TheOldkid888]

Hello EPDM Rubber Coupling, They can be used underground. Be sure to tamp the ground down as best as possible under the fitting. Thanks for commenting and enjoy your week! Al

[@TheOldkid888]

A snap torque wrench is good to have, but not really necessary when installing only a few couplings. I would not suggest for any homeowner to purchase one for doing a simple tie in. The big thing is to snug them down well and you should be all set. The T handle torque wrench is very handy when you have a very big project. I have used them before and they are great for those jobs. Thanks for commenting and enjoy the week! Al

[@frerecampbell9291]

Hi, thanks for instructions, but how long do Fernco Couplings last, for joining regular black down pipe under toilet?

[@TheOldkid888]

Hello @frerecampbell9291, You're welcome! As long as there isn't strong acid flowing through the pipes you are looking at decades. I have used them for many years with no issues. Thanks for commenting and enjoy your weekend! Al

[@TheOldkid888]

@sundaybighouse Hello there; Fernco couplings are made in many different sizes. the smallest being 1 1/4". It actually fits snug on a piece of 1 1/2" copper pipe. It sounds to me that you could use 2 trap adaptors and glue a short piece of plastic pipe between the 2 adaptors. The trap adaptors just have to be tightened once you have your piece is glued in place. I will in box you with a video of the adaptors that i made. Thanks for commenting! Al

[@johncrowder2655]

Is it code to use abs couplings and cast iron together?

[@jeffm7669]

Thanks for sharing. The drain for my washer is leaking at the p trap sweat fitting. now I know how to replace it with pvc.

[@TheOldkid888]

Hello Joe, You are more than welcome! Hopefully the repair will go well for you! Thanks for commenting and enjoy your week! Al

[@sgtdraino]

Hey Al, we found a leaking coupling in the water line going from our well house into our residence. The leak is right at the point where the ABS pipe from the well house connects to a metal (possibly copper) pipe going into the house. The original setup had some sort of connector made of a white plastic screwed into the metal pipe, the other end (which is not threaded) then went inside the ABS Pipe w/ a couple hose clamps around the end of the ABS Pipe. These Ferncos be a good way to repair?

[@catfish24]

I just bought one of these a 2 inch by 2 inch for my new shower drain to do the join up where the pipes come together. Lowes $5 and something.

[@TheOldkid888]

Hello catfish24, Nice! They work very well for sure and don't break the bank. Thanks for commenting and enjoy your week! Al

[@noelmatos7927]

Is there 1/2" conector , so i can hook up copper to pvc

[@TheOldkid888]

Hello noelmatos7927, If you are connecting 1/2" copper to 1/2" pvc, a sharkbite coupling will do the trick for you! Put a mark on both pieces of pipe 7/8ths from the end. It will show that the fitting has gone on completely. Sometimes there is a half way point where the fitting can bind up so you want to be sure the pipe goes into the fitting the entire way. Hope this helps! Thanks for commenting and enjoy your weekend! Al

[@sofiadasa77]

can i conect brass and abs p trap with this? commercial building kitchen sink

[@TheOldkid888]

Hello Mark, Definitely. It will work well for you! They come in many different sizes. You would probably be looking for a reducing coupling. Thanks for commenting and best of luck with the project! Al

[@65csx83]

I'm a DIY'r or try to be and joining plastic to metal has been a bane so your title caught my interest. However, at the risk of being picky, while the coupling creates a connection, the plastic is not joined to the metal.

[@TheOldkid888]

Hello 65CSX, Using these couplings is one way of joining those two different pipes you mentioned. Unless you would be caulking a joint with oakum into a cast iron hub; butting the pipe ends up to each other and sliding the coupling over both is a way of joining the pipe together. This method has been used for years. You can also use MJ couplings that have a stainless steel band around the entire rubber. A coupling is a short piece of pipe with two socket ends that joins two pieces of pipe together. Regardless of what the pipes are made of the Fernco coupling does that. Thanks for commenting and enjoy your weekend! Al

[@65csx83]

@@TheOldkid888 Thanks for the addition info. I'm aware of the couplings but have not used them. I've helped friends correct problems where they were used and failed because of poor installation. If I were to use them it would be as a second layer of protection over a joint where I was concerned the connection might fail.

[@anikethramname]

@TheOldkid888 Would it be safe to connect brass bathtub drain kit to existing old drain line (vertical stack likely cast iron) coming up from below the concrete through a shaft in an apartment building using Franco coupling?

[@sgtdraino]

Too bad you're not my neighbor! Ended up calling a plumber. Fixed it up with some brass fittings, all told cost me $117. Plumber said it was good I excavated it myself, or would have been another $300!

[@TWC6724]

Will a 3” reduce down to a 2 1/4 OD” pipe by chance? Or can a 2” coupler expand to that dimension? This is for a dust collection port for woodworking.

[@TheOldkid888]

Hello TWC6724, A 3" won't squeeze down to a 2 inch pipe, but a 2 inch coupling will clamp down to a 2 inch pipe. Actually it fits a 2" pipe that is plastic,galvanized or castiron quite well as their outside diameter is roughly 2-1/2". So you would be looking for a 2" inch fernco. Another type of clamp is called an MJ coupling. They make them to fir onto copper which has a smaller outside diameter. Hope this helps! Thanks for commenting and best of luck with the project! Al

[@tonioelhandyman3824]

Can they be buried under concrete?

[@TheOldkid888]

Some places allow them to be buried underground. Using an MJ coupling with a stainless steel band is generally what I use underground. It works on the same principal, but the band covers the rubber completely. The biggest thing about installing anything underground is making sure the ground is well compacted underneath Thanks for commenting and enjoy your week! Al

[@GaryYoung-eq1ph]

Can u connect this to same size pipe like 1 1/2 to 1 1/2?

[@TheOldkid888]

Hello user-lq4gb2ch9l, You can definitely connect the same size pipe with these couplings. They make them of all sizes. Thanks for commenting and enjoy your week! Al

[@sharmakotish1582]

Thanks sir,for help. Your work is well.

[@TheOldkid888]

Hello Tejinder Pal, You're more than welcome! Best of luck with any future projects! Thanks for commenting and enjoy your weekend! Al

[@TheOldkid888]

Hello Derek; You are more then welcome! Glad it worked out for you! Thanks for commenting and have a great week! Al

[@lillithjones993]

What size coupling would go on a 2 inch cast iron pipe? Does it need to be a little bit bigger in order to slip over the pipe?

[@TheOldkid888]

Hello Lillith Jones, A 2 inch Fernco coupling will fit over 2 inch pipe nice and snug. It will slide over with a little bit of effort, but that is the size you will need for it. Loosen off the stainless clamps and you will have no problems installing it. Thanks for commenting and enjoy your day! Al

[@salamashurrab5593]

Currently working on a sewage treatment plant project and needs to connect a pressurized 36" Cast Iron pipe to 20" Carbon steel pipe which both carry the treated water, is't applicable to use lead or we have to ask the manufacturer to cast a suitable fitting for such case , or to use HDPE coupling ?Thanks.

[@geojor]

good information, thank you...

[@jonathankohl6264]

Can you use these on a pvc drain to a cast iron hub under a bathroom sink? Thanks

[@TheOldkid888]

Hello jonathan kohl, They generally don't go on the hub itself, but the cast iron pipe itself. If you can't cut the hub off; you could possibly get a fernco to attach to the hub and push the pipe in as far as possible. It will work for you, but not exactly how they are suppose to be connected. Hope this helps! Any other questions feel free to ask! Thanks for commenting and enjoy your week! Al

[@jonathankohl6264]

@@TheOldkid888 I got it hooked up. Thank you for the reply!!!

[@Izzy20121]

hi i would like to join a 1/2'' pipe to 3'' pipe can help me plz can it be done with couplings good work. thank you

[@robotmotor]

great video thank you

[@ruthannfriend102]

I have a 2 story home and have cast iron sewer pipe in between the ceiling from upstairs between floors. I don't know if all the pipe should be removed it is over 50 years old or just repair the leaks ( when we find them). There is not much room to try and reach in between to make repairs. It isn't like a basement where there is room to move around and reach the pipes. I am sure the leak is someplace on the elbow where the pipe turns to go downward to the main floor. What is your advise to do, take the pipe out across the ceiling which will be a mess or patch it on the elbow with the fernco? I am trying to do this as economical as possible. Would there be a chance the older pipe can get worse after it is repaired so what would you do? If we remove it what is the best kind of saw to cause the least mess to cut the cast iron? I appreciate your advise very much, thanks.

[@TheOldkid888]

+Ruth Ann Friend You could try and patch it with a two part epoxy if you can get it dry enough. This will be a temporary patch, but generally speaking if a piece of cast iron is starting to leak, then all of it is getting thin. I made a video that discusses the different ways to cut it.....Old plumber shows how to cut cast iron pipe. If you are interested. It is hard to say exactly how long a patch job would work on it, but it will get you by for a short time. I would plan on removing it all in the future. Thanks for commenting and feel free to fire away with any more questions. Al

[@johnwaddell4107]

I have a toilet flange approximately 1 1/2-2 inches below the floor. Does fern cook have a cast to pvc fitting that can be used here that will got between the 4 inch cast dwv to pvc to raise the new flange to install a new toilet flush or just above the floor?

[@TheOldkid888]

Hello John, Oatey makes a flange extension that might may work for you. You may be able to find it at the big box stores. There are also toilet flange spacer kits that you can purchase, but the Oatey flange may be the better way to go. Here is the number on Amazon..... Oatey 43651 PVC Twist-N-Set Closet Flange, 4-Inch Thanks for commenting and good luck with the repair! Al

[@TheOldkid888]

@brewcabbage Hello there; A fernco coupling or an MJ coupling will work as well. I have used both although I prefer a fernco. This will do exactly what you are looking to do on your installation. Excellent product! Thanks for commenting and Happy New Year!!! Al

[@TheOldkid888]

White PVC requires both primer and glue as well; where ABS can be put together with glue only.White PVC is also made for waterlines and comes in both threaded and glued fittings.Fernco couplings are strictly used for drainage systems only.Thanks for your comment and have a great day.

[@samsen3965]

Do you know where I can find a 2-1/2 inch reducer to 2 inches fernco coupling? Homedepot has none.

[@TheOldkid888]

Hello Sam, Fernco doesn't make such a fitting as pipe used for plumbing drain lines goes from 3" to 2". What type of pipe is it that you are using? If it is copper and a pipe that is relatively thin you can use a 2 inch coupling that will stretch enough to go over the 2-1/2". Thanks for commenting and best of luck with the project! Al

[@samsen3965]

​@@TheOldkid888 Thanks. My old house's 2-1/2 pipe is galvanized steel pipe. The rotten segment is a p water trap that is cast iron and must be changed. I'm going to replace the damaged segment with 3" ABS p trap with an underneath valve. I saw a 3" to 2.5" fernco on eBay that I ordered if that is the right coupling. If not I'm planning to cut about an inch from one end of 3" to 3" fernco (In a wedge shape manner) and make it 2.5! Hopefully, if that doesn't leak. Also, I see in the UK they have 75mm to 63mm couplings that I guess is the same thing I need.

[@TheOldkid888]

Hello Sam, So if the galvanized pipe is 2-1/2" on the outside which in plumbing terms would be 2". Pipe is measured on the inside diameter so I am pretty certain that a 2" Fernco coupling will work for you to change over to ABS or PVC pipe. It will go over a 2" pipe nice and snug. Hope this helps! Let me know how it goes. Thanks for commenting and best of luck with the project! Al

[@MrUsaer]

In your introduction you gave some advice about using quality blades when cutting cast iron. Thanks for making suggestions on brand names. I have about a 2 ft long horizontal cast iron pipe sticking out of my bathroom slab (about 1 foot above ground level) that is about 60 years old and has developed a hairline crack and some rust on the last 1 foot section. I had a rubber hub on the end of that pipe that became disconnected from the plastic sewer line pipe that goes into the ground. The plastic pipe sunk and broke the rubber connector due to soil subsidence. I want to cut off that bad rusted section of the cast pipe, and thought I would wrap the good section of cast pipe in duct tape or monkey tape to help decrease the vibration so I don't destroy the somewhat fragile first foot of somewhat "good" cast pipe. Also, I was thinking of spraying the cast pipe with rust paint and just leaving the monkey tape on it too. I was wondering if there was anything else I might want consider before I start cutting the cast iron.

[@TheOldkid888]

Hello MrUsaer, Where the cast is getting ripe I always use blades. A grinder with a cutting wheel works as well. Be sure to where a shield of you are planning on using the grinder. You can use a little two part epoxy to seal the pipe until you make your repair. Dry the pipe well and then apply the epoxy. Thanks for commenting and best of luck with the repair! Al

[@MrUsaer]

Thanks for reminding me about wearing eye protection for this one. Definitely will be lots of rust flake flying! Also, I was going back and forth about using reciprocating saw blades or using a grinder as you suggested.. I need to reduce vibration as much as I can since the entire pipe is fragile. Will decide soon. I am thinking about a second option to fix it by using some kind of product that allows you to tap in a plastic pipe insert inside of the bad cast iron pipe. It would act as a pipe liner so it would probably be thin plastic. Seems like I saw something about that last year online, but did not see it online this time when I looked. Only saw advertisement about big companies that come out and use a machine to insert pipe for your entire sewer line. Would you happen to know about where I could get about a 2 foot long pipe that would fit inside of the bad cast iron pipe? Also, have you ever used it before? IF I used the insert pipe, I would not have to risk cutting that old cast iron and having it fall apart and have nothing left to attach my connecting pipe to. I will use your suggestion about using the 2 part epoxy. That should be better than the gorilla tape that I was thinking about using. Plan on going to HD today just to look around, and should have time to fix it during the week. At least we have 2 bathrooms so no big rush. Again, I appreciate your suggestions. If you know anything about where to buy a short piece of this "insert pipe" please let me know. I am not sure of the proper name for it, so can not even google it properly. Thanks again

[@TheOldkid888]

Hello MrUsaer , Blades give very little vibration and are much safer than the grinder. Take your time and you will be all set. Is the pipe you are cutting off coming straight down from above or horizontal with a elbow facing downward? Keep in mind that the pipe above is very heavy and should be supported with metal strapping to ensure it doesn't move. You don't want any extra work if you can prevent it. I haven't come across any inserts for pipe, but since you mentioned it I did a little investigating and they do make inserts for pipe, but I am not sure if you can actually purchase any. All I could find was companies who do the work. If you get it dry; the epoxy will work as long as it is made to adhere to metal. Thanks for commenting and let me know how you get along....Al

[@MrUsaer]

I would have thought less vibration with grinder, so glad to have your advice. I have cut my share of pipes both ways, but never paid much attention to degree of vibration since I never had to be worried about cutting a rusted pipe before. The 4 inch cast pipe comes out about 2 feet out of the bathroom brick wall (slab actually I guess), so it is horizontal before connecting to the plastic hub clean-out which is about 3 inches below it. I have to cut the end of the cast iron pipe back, not only because it is in terrible shape, but also has to be cut out so that I have enough room to splice in a new connecting pipe between the horizontal pipe and the hub. I bought some different kinds and sizes of pipes at HD but will not know what I will use until I cut away the last foot of the horizontal cast pipe and have enough room to actually be able to try to see what will fit. I have a feeling that whatever I end up doing is not going to be code, but I need a connecting pipe that will be able to flex as the ground sinks a little every year in my neighborhood. It has been about 8 years since I last had to deal with this. I also had same problem finding anyone that sold some kind of insert pipe. Not sure why HD or anyone else online seems to be selling it. Have a lot going on these days, but hoping to find time soon to attempt a fix. Will let you and any others that might have a similar problem how this ends.... or maybe will be back sooner if I hit a dead end of ideas. Again thanks for advice!

[@MrUsaer]

took me about 3 min to cut 4 inch cast iron pipe using a grinder wheel on my standard size circular skill saw. I at first tired a using a metal blade but that would have taken me about 20 or more minutes and would have been harder

[@sbeckle1]

If I use one of these on an indoor drainage system (bathroom sink), do I need a torque wrench? Will tightening with a nut driver or ratchet wrench be sufficient? How tight is "tight"?

[@TheOldkid888]

Hello sbeckle1; You will only need a nut driver to tighten it up. Even a common screwdriver will work for you! No need to crank it with a torque wrench. Thanks for commenting and best of luck with the repair! Al

[@louishollandjr]

To right can cut the life of the seal at the ends .

[@twotone9908]

Can you use a 1.5" fernco to a lead pipe going into basement floor

[@TheOldkid888]

Hello Juan; Ferncos can be used on lead pipe as they are very pliable and easily shape to a pipe that is not perfectly round. Something to keep in mind as well; if you apply the fernco and you have a small leak and are concerned about crushing the pipe; you can apply another clamp or two on the Fernco and this may solve your problem. Hopefully one clamp on the lead and the other to the pipe you are attaching to will do the job for you. You have to be careful regardless of what you use on the lead pipe as it can be a little soft and has probably been there for a long period of time. Thanks for commenting and best of luck with the project! Al

[@detarmstrong]

I'm a DIY'er looking to take apart an existing fernco coupling to fish out a lost tub stop plunger. Can I reuse the existing fernco when I put it back together. Is there any special cleaning I should do prior to putting it back together?

[@TheOldkid888]

Hello Danny; You should have no problem reusing the fitting as they last for years. Thanks for commenting and best of luck with the repair! Al

[@louishollandjr]

Just dawn soap depend on how old Coupling is or is it in open area I would use new one if in wall or ceiling.

[@CantPlayLead]

Old Kid: I have a unique situation. I have a 10' run of cast iron 2-inch which has developed multiple leaks, and which is leaded into the y. I don't have cast iron which I can cut near that y where it is leaded in, and so I'm gonna hafta put the pvc into that leaded connection area. It's either that ( and use a substantial amount of silicone to seal that pvc to cast-iron connection ), or find a rubber coupling which fits the pvc and the other end will clamp around the flange of the cast-iron y. I simply do not have enough 2-inch cast iron of integrity -- when I start sawing on it, I am sure it will fall apart. I am thinking of melting the lead out of that connection, stick the pvc in and seal around it within that cast-iron flange with some heavy construction adhesive / sealant or silicone or whatever. Got any suggestions as to sealant ??

[@TheOldkid888]

Hello CantPlayLead; I know exactly what you are talking about. I usually cut the Cast Y out and install a PVC or ABS -- Y. I glue 2 short pieces of pipe into the ends of the Y and cut out the section of cast that has the Y in it. I take two ferncos, slide them down the cast and install the section of PVC or ABS with the -- Y in it and I attach the two ferncos. Then I glue the section of pipe into the branch of the Y. If you are going to melt lead and remove the pipe out of the hub; you are going to need a little oakum to pack in the joint and use some Mitee or hydraulic cement to hold it in place. You can use X Seal 3C AF (Asbestos Free) Cold Caulking Compound Cord. This was previously called PC4, but contains no asbestos as PC4 did. It holds the oeakum in place. Whenever using oakum; you want roll it and keep it tight while packing it into the joint. There are caulking compounds such as Plastic Cement that will also help to seal over the joint. You can also add a Fernco for additional security. Take a 3 by 2 Fernco and slide it over the piece of pipe you are installing in the hub. Once you have the pipe sealed in the hub; slide the 3" Fernco end of the Fernco over the hub and tighten the clamps. It will be a little loose, but it will tighten for you. Then tighten the clamp on the 2" end and you will be all set. I use and an extra clamp on the 3" end of the fernco because it is a little loose on the hub, but it will work for you. Thanks for commenting and let me know how you get along! G.L. Al

[@ruthannfriend102]

How do you repair a curved cast iron connection that makes the turn with Fernco? The cast iron runs across the ceiling then a connection piece which changes the pipe direction to go down to the floor. It is not just a straight piece of cast iron. that is leaking. Can I use this Fernco?

[@TheOldkid888]

+Ruth Ann Friend Is it a patch you are looking for? Sound like a 1/4 bend to me. What size in the pipe? Get back to me when you get a chance...Al

[@neilwilliams8608]

What's the best way to convert 1/2" or 3/4" metal pipe to PVC pipe? I have a water leak and have to cut both sides of the leak so I can fit another in it's place. Awesome video. Thanks a lot.

[@TheOldkid888]

Hello Neil, You would have to go back to the threaded joints on both sides of the leak and unthread the pieces. There is no easy fix for this type of situation. You have to cut the pipe between the fittings and then unthread them. Hopefully they will come out without breaking off. Generally speaking when you get a pinhole or leak in galvanized pipe; it is a tell tale sign that the pipe is getting thin more than likely every where so a complete change out is probably in the not too distant future. To get you back in business; I would suggest two Sharkbite male adaptors. Apply Teflon to them and thread them into the fittings. Then use pex to join the two. Is this in a basement or is the leak outside? Thanks for commenting and get back to me when you get a chance....Al

[@neilwilliams8608]

Outside under grass and dirt. Thank you for your reply.

[@TheOldkid888]

Hello Neil, You may want to consider running poly if it is underground as it will last for years. I take it that you don't have any freezing in your region or the pipe is considerably underground. How long a run is it that you would need to replace? Is there any branches taken off along the run? Thanks for commenting and get back to me when you get a chance. Al

[@neilwilliams8608]

The gas water heater is in the garage, about 30 feet to the back of the house where the kitchen is. If there is a female PVC threaded fitting, I am going to use PVC from both water pipes from the garage to the house. Under the house I am running PVC to the kitchen pipes, to the bathroom sink and bathtub. I will be using "U-BRACES" to attach the PVC pipe to the beams. I'm not a plumber but, a DIY person.In 2008 I replaced all the hot water pipes, cold water pipes and gas pipes and gas water heater by myself. When the city came out for inspection, he said the plumber did a darn good job. Obviously, I kept my mouth shut. So, if I can do it, anyone can do it.If it wasn't for YOU TUBE, I could've never done it. Thanks to people like you. GOD bless, and thanks for your reply and video's.

[@TheOldkid888]

Hello Neil, I do know that they make many different fittings and the female adaptor you are looking for is definitely one that's made. They make them reducing as well. The fitting you would be looking for would be a threaded female by socket. You would choose the size. I would choose CPVC over regular PVC if you can find it as I believe it is a better product. Takes hot better as far as breaking down. I am sure some people would argue this point, but this is my thoughts on it. Sounds like you have a good understanding for piping if the inspector gave you the thumbs up! Thanks for commenting and enjoy your week! Al

[@pabloserrano3467]

Could I use this to put together 2 3" PVC toilet drainage and how long will it last. THX for the video.

[@TheOldkid888]

Hello Pablo, If this is above ground you will have no problems for many years as long as the pipe is well supported. I have seen them in places for decades now with no issues. Thanks for commenting and enjoy your weekend! Al

[@pabloserrano3467]

TheOldkid888 Thanks. Did the job and it look like is going to be there for decades.

[@TheOldkid888]

Hello Pablo, Great to hear! They do last for many many years! Thanks for commenting and congrats on the project! Al

[@TheOldkid888]

Hello benny; you are more then welcome! I hope this helps you on your project! Thanks for commenting and have a great week! Al

[@bradgrady7497]

Great Vid! My 2" cast iron drain pipe (which runs horizontal under my sink) has just kicked the bucket and broke where the threads are. To attach to my sink is just a 1 1/2" cast iron P-Trap with an IPS Elbow. I can't connect the drain pipe with the Elbow because the threads are busted. Any issues using a Fernco coupling to join the drain pipe with the Elbow? That would allow me to fix the sink today and cheaply rather than to bust open the wall, take out the old pipe to cut and rethread, etc.

[@bradgrady7497]

Ok. Making sure the elbow's end is round instead of a hex shape, it fits real snug into the flexible coupling (I just went and bought one). The other end I fit as far as it would go onto the broken pipe so as not to tighten the coupling on any weak points. Amazingly, I went to the store, bought the coupling, put it on and tested it and it works - all in about an hour and for less than $5. Thanks for the Vid TheOldkid888 Now I just have to get rid of the moldy smell when all the dirty water leaked out.

[@TheOldkid888]

***** I am really glad everything worked out for you! Nice to have that repair done! Thanks for commenting and have a great week! Al

[@TheOldkid888]

@Dicofole Hello; These fittings have been around for sometime now. The clamps are stainless steel and the rubber is a neoprene. Excellent product. As far as roots go;you should have no trouble especially if the clamps are tight and the pipe is well supported underneath. You could also look at MJ Couplings as well for underground that have a stainless steel band that covers the entire coupling. I have used 100's of them underground. Hope this helps! Tks for commenting! Al

[@TheOldkid888]

The black pipe in this video is actually called ABS.Where I live white pvc is not used for drainage inside homes.Grey PVC is used in apartment buildings and commercial applications.ABS is strictly used in homes because of the fire rating where as grey PVC has a much better fire rating.White PVC pipe is used in other parts of the country.White PVC pipe is used to run sewer mains into homes underground and is called SDR28;has a very thin wall thickness.A sleeve adaptor converts it to ABS inside.

[@broken1965]

Code requirements above ground no-hub only all states?

[@sparksdoggs]

could i put one on a street 90?

[@mirjanabdul7108]

I have questions about this product why plumbers says this product is not safe when ever they see it in basement under the battub can you please explain why plumbers says this is not safe to be there? Thanks

[@TheOldkid888]

Hello Mirjan, I have no idea why plumbers would say that. I have seen thousands of them installed with no issues. Perhaps they do not like the product, but they are excellent in my opinion. I have used them too many times to mention with no issues. Big thing is to make sure the pipe is supported well and they will last for decades especially if you do not use harsh chemicals in your drains. Thanks for commenting and enjoy your weekend! Al

[@michaelcastillo3231]

Fernco couplings r one of those products that make the installer look like he doesn’t know what he’s doing, wants to take a short cut, or can’t or won’t use the correct fitting. Now while they can b useful for a temporary situation, they r frowned upon because it’s a lazy, cheap way to do it. If fernco couplings were so great, they would b used in a commercial application. Whether it b hospitals, schools and government buildings. And they’re not. If a plumber worth his wrench got caught installing these on a commercial job, he would b laughed at.

[@TheOldkid888]

Hello Stephen; You can definitely install one on a street elbow. I have done it in the past. Thanks for commenting and have a great week! Al

[@islamerica3032]

No "hub" needed to connect cast iron to PVC??

[@mikemichaels4500]

Can they be used underground?

[@TheOldkid888]

Hello Mike, I have seen them underground and have installed them on occasion, but I prefer to use an MJ coupling over the fernco. It has a full steel band around the entire rubber which helps give support. I have installed hundreds of them underground. I prefer the fernco above myself. Thanks for commenting and enjoy your week! Al

[@gregben5250]

Hello nice video--- Installing a new bathroom in my basement. I will be replacing a piece of 4" buried cast iron pipe and will replace with PVC pipe. Is it acceptable to use these couplings for buried sewer piping? Will the steel on these couplings deteriorate overtime in this scenario? Any advice is appreciated. Thanks!

[@TheOldkid888]

Hello Greg, You may want to use an MJ coupling underground rather then a fernco coupling as it has a full stainless steel clamp that covers the entire rubber. I have used fernco underground, but an MJ coupling will give better support. Ferncos are great for vertical above ground connections. Thanks for commenting and enjoy your week! Al

[@gregben5250]

thank you Al!

[@frankthetank9613]

Hey Al, I have some old 4 inch cast iron (4-1/8 od) and I need to connect it to 4” pvc what is the best way to go about that? The 4 x 4 fernco is to big. Thanks

[@TheOldkid888]

Hello Frank, Whenever I come across a situation such as this I install an ABS sleeve adapter over the end of the pvc pipe. It glues on the end of it and increases the outside diameter of the pipe so that it fits firmly into the fernco or MJ coupling.. It is the exact same size as ABS pipe which is almost identical to the size of cast. You will need a transition glue to go from pvc to abs in order to make a guaranteed watertight joint. Hope this helps! Best of luck with the project! Thanks for commenting and enjoy your weekend! Al

[@robertohassenteufel1991]

@@TheOldkid888 very smart...! Will definitely consider though, my 4 in lead bend is approximately 4 1/2 in and not exactly round, got dents [installing an offset toilet flange] must make use of some kind of cement for lead WHAT DO YOU RECOMMEND when overflowing? also, got brass flange on the other side

[@stevenzak199]

Will these withstand pressure? I have a leaky copper pipe between my pool pump and pool filter. I need to cut out the bad part and replace it with PVC. If I connect the copper to the PVC using one of these couplings -- which I'm sure I can find at Lowe's -- will it be leak proof given that it's under pressure?

[@TheOldkid888]

Hello Steven. Unfortunately they won't take any great amount of pressure. You will need to cut out a section and use two barbed nylon or PVC couplings and double clamp them for good measure. Thanks for commenting and best of luck with the repair! Al

[@numssened]

Steven Zak use a dresser coupling

[@michaelbala4225]

Use sharkbite connectors with a new piece of copper

[@skoronesa1]

You should mention that ferncos are usually against code and that no hub couplings are preferred.

[@skoronesa1]

If you want a better seal on plastic pipe and want to make it easier to slide on, apply some clear pvc primer to all surfaces and then attach. It will still be removable just a little more difficult.

[@TheOldkid888]

Hello skoronesa, I have never had any issues as far as the fernco making a good seal, but if I do I will give that a try. Thanks for commenting and have a good one! Al

[@Izzy20121]

oky thank you

[@nojustice8353]

unless your job is getting inspected then you would have to use a proflex band

[@TheOldkid888]

Hello no justice, That would be correct. An MJ coupling is what I use in those cases. Thanks for the input and enjoy your weekend! Al

[@TheOldkid888]

@sundaybighouse hello there; You don't need to glue these fernco couplings; just a simple tightening with a screw driver or nut driver will be suffice. In the message I sent you that was in regards to using 2-1 1/4 trap adaptors and a small piece of pipe. You should be all set now. Thanks for commenting, good luck with the project and have a great day!!! Al

[@MrSailerrman]

They are illegal to use inside the building. Mn state code. If you are from Mn and wanted to know. Out door underground only. You need to use a coupling with stainless steel outer shield inside the building.

[@TheOldkid888]

Hello MrSailerrman; I am sure the codes are different every where. They are allowed in Canada. They are an excellent product. I am not a fan of using them outdoor underground myself. I generally go with an MJ coupling outdoors that has the stainless band on it. Thanks for the information and commenting! Have a great week! Al

[@billgator9083]

Hello Al, Can i use these Fernco couplings to join PVC and cast that will be 4 feet under a new slab?

[@Ojeramup12]

Anybody know how long these couplings will last underground?

[@TheOldkid888]

Hello peanutbutter1925, Many years. You may want to use a MJ coupling. Same principal as the fernco; only it has a stainless steel sleeve around the gasket. Should last for several decades. Thanks for commenting and enjoy your day! Al

[@TheOldkid888]

Hello bill; You can use this product. I have used many of them for installing a fitting into an existing line, but if you can find an MJ coupling or Mission coupling you would be better off. Regardless of what you use to join the pipe together; support under the pipe is the biggest thing. Thanks for commenting and good luck with the project! Al

[@shimulislam8539]

boss 6" to 6" joyen how copling

[@TheOldkid888]

Hello Shimul Islam, You can buy them 6 inch in size. I believe you can buy them as big as 2 feet in size. Help this helps! Thanks for commenting and enjoy your week! Al

[@AaRoNVessIe]

can i do a 90?

[@TheOldkid888]

Aaron Vessie Not exactly sure of the question, but you can get the fittings in 90's as well. You can use them on fittings 90's. One send of them is the same size as a piece of pipe. As far as them fitting over a regular 90; they are usually to big or small. Thanks for commenting and have a great weekend! Al

[@TheOldkid888]

@dustbowel20 Hey Roger; They work very well and are an excellent product for renos. Any questions....drop me a line and I will help as much as I can. Thanks for commenting and all the best in 2012!!! Al

[@kirm8137]

Thanks. I've seen a couple of your videos and they're most helpful. I've got a question for you that not many consider or know the answer to. What do you do about deflection? I'm replacing the main cleanout with ABS. I've got 4" cast coming in from the street and it's at an angle to the horizontal stack/cleanout. Not much...about 7 degrees as a rough estimate. (I'm really surprised the cast hub just sucks it up, no problem.) Fernco says their couplings will handle 5 degrees max. It was suggested to use two couplings with a small length of pipe between but that's going to mean a lot more digging. I'd like to avoid that. What's your experience been with deflection? Do you have any suggestions? Thanks for any advice you have, Hugh.

[@TheOldkid888]

Hello Hugh, Generally I will use a fitting to make an offset, but 7 degrees is slight. I have used them behind tubs where the overflow is not in line with the drainage tee below. The fernco works well for that. I believe one fernco would do the job for you. Something to keep in mind if you have to use two fernco couplings and a piece of pipe you can cut the fernco coupling back a little to shorten the space required. I have cut them back as much as two inches in length where space is an issue. The coupling is the same thickness all the way through so it doesn't make any difference in the length as long as the clamps are on the pipes on both ends. Hope this helps. Thanks for commenting and best of luck with the project! Al

[@kirm8137]

Thanks so much for the reply. It's good to know I can cut them back if I have to. I kind of agree with you on the 7 degrees but honestly it's probably more so I best use 2 to be safe. BTW, as an old plumber have you ever seen anything packed in the hubs of cast besides oakum and lead? Mine don't seem to have lead. They seem to be strictly a fiberous, thready material. I've been chipping them out with a hammer and chisel and I'm not seeing anything like lead. Any ideas?

[@TheOldkid888]

Hello Hugh, We use to use PC4 30 years ago instead of lead. It came in a metal container and you simply added water to it and applied it into the hub. It was grey in color. Much easier to remove then lead. Thanks for commenting and best of luck with the project! Al

[@TheOldkid888]

Hello MrArons21; If this project is above your concrete slab; this is one a few different types you can use. I have used many of these over the years and have had no problems at all. They will last for many, many years without a problem. Thanks for commenting and best of luck with the repair! Al

[@TheOldkid888]

Hello winterwisp79; You are more then welcome! They come in handy quite often in many situations. Thanks for commenting and best of luck with your project! Al

[@TheOldkid888]

@sundaybighouse Hello there; I know they can be painted for sure, but if there is a lot of expansion and contraction the paint will crack. If you intend on painting them I would use an oil base paint diluted with varisol and you should not have any problems. Thanks for commenting and have a grand day!!! Al

[@jreal4343]

Illegal!!!!

[@RobThePlumber]

Every single one of those couplings you have up there are completely wrong. When making proper pipe joints with cast iron you should be using couplings with a metal shroud on the outside. Either a "MJ" coupling or a "sheer" coupling. Cast iron can shift from side to side and destroy the couplings you have shown.

[@TheOldkid888]

Hello Rob; I am not sure if \i would say they are wrong. If 2 pieces of cast are hung and supported on both ends; there is no reason why the fernco could not be used. I know they work there and also when one piece of cast is stacked on top of another. I have used MJ couplings as well. Thanks for commenting and have a great week! Al

[@iwantosavemoney]

+TheOldkid888 he is wrong on the cast side for sure

[@wolfattack402000]

+Rob The Plumber Fernco couplings are used for underground. The shielded couplings are for above ground.

[@daygo4u]

Check plumbing code before making a video next time.

[@TheOldkid888]

Hello Rick, Not sure if they can be used in your neck of the woods, but they can in mine. Thanks for commenting and enjoy your day! Al

[@juliebliss948]

Al is trying to help, within the codes in his area. Be a big boy and be less of an unpleasant snot. It takes too much negative energy to be so hateful. If you don't have something nice to say, DON'T.

[@frogintinc]

Hey Rick- You're a douche. Have a nice day.