Internal PVC water pipe connector

[HTC]

I have a 2" pipe which is inside a wall. The end of the pipe has been cut flush with the wall.

 

I need to connect a new section of pipe but I can only find connectors which fit on the outside of pipes.

 

Does anyone know know if pipe connectors are available that fit internally to a 2" blue PVC water pipe?

 

 

[lopburi3]

2" I would suspect would be a drain pipe and they are not normally screw type connections - a bottle trap or flexible plastic drain pipe would fit inside

[sometimewoodworker]

3 minutes ago, lopburi3 said:

2" I would suspect would be a drain pipe and they are not normally screw type connections - a bottle trap or flexible plastic drain pipe would fit inside

Those could well work but my bottle trap has a 2” diameter and uses a compression fitting 2” to 2”. So @HTC may need to use the heat gun technique on another piece of 2” pipe to shrink it down to fit. 
 

I may have to do something similar soon as I have a very short stub to connect to.

[Outbackoz]

C

 

Depending on the class of blue pipe (see above) this Internal diameter (ID) of the pipe will vary according to wall thickness. Suggest you measure with a set of verniers or if you eyesight is good with a steel ruler. Let's know what size pipe and can hopefully give some advice    

 

 

[Outbackoz]

Oops! forgot to ask need to confirm is it a drainage for pressure application?  ????

[HTC]

The pipe in question is a swimming pool overflow, so not under pressure.

 

The class of pipe is 13.5.

 

I've attached a picture for clarity.

 

Thanks.

[Fruit Trader]

As is its low pressure you can make a split internal coupler out of 2" pipe.

A straight slit is cut in a piece of pipe just wide enough so that it closes down and becomes a tight fit inside the pipe you want to couple to.

The slit must completely close when inserted into the pipe so that the glue can seal it.

[HTC]

I would prefer a connector, but if not available, I might try the slit method suggested.

[ubonjoe]

19 minutes ago, HTC said:

I would prefer a connector, but if not available, I might try the slit method suggested.

You could chip out the cement or grout around the pipe and put a standard coupling that fits the outside of it. That is what I would probably do.

[HTC]

1 hour ago, ubonjoe said:

You could chip out the cement or grout around the pipe and put a standard coupling that fits the outside of it. That is what I would probably do.

I did think about that, but I would rather not as I would need to cut into the tile. Cement in the pool system too .... (I'm a tad clumsy with stuff like that).

[HTC]

I'd like something like this, from Thailand if possible.

 

https://www.pvcfittingsonline.com/fittings/schedule-40-pvc/inside-pipe-connector.html

 

Surprised this isn't a popular product.

 

Hmmm, I might head down to the local pipe store and try the bottle traps or anything else that can fit.

 

Edited November 24, 2019 by HTC

[GarryP]

2 minutes ago, HTC said:

I'd like something like this, from Thailand if possible.

 

https://www.pvcfittingsonline.com/fittings/schedule-40-pvc/inside-pipe-connector.html

 

Surprised this isn't a popular product.

 

Hmmm, I might head down to the local pipe store and try the bottle traps or anything else that can fit.

 

I have seen those at the local hardware stores.

[Thainesss]

1 hour ago, HTC said:

I'd like something like this, from Thailand if possible.

 

https://www.pvcfittingsonline.com/fittings/schedule-40-pvc/inside-pipe-connector.html

 

Surprised this isn't a popular product.

 

Hmmm, I might head down to the local pipe store and try the bottle traps or anything else that can fit.

 

Only thing you can do is either go ahead and order one right now from somewhere online from overseas or spend the day going from hardware store to hardware store with a picture on your phone. 

 

Having spent the better part of the day today going from hardware store to hardware store to find enough basic fittings (unions, check valves, NPT fittings) to finish a basic job I've got going on.... Good luck. 

 

Id probably just order one off the net from the west, then go looking for one locally. 

[HTC]

1 hour ago, Thainesss said:

 

Only thing you can do is either go ahead and order one right now from somewhere online from overseas or spend the day going from hardware store to hardware store with a picture on your phone. 

 

Having spent the better part of the day today going from hardware store to hardware store to find enough basic fittings (unions, check valves, NPT fittings) to finish a basic job I've got going on.... Good luck. 

 

Id probably just order one off the net from the west, then go looking for one locally. 

I'll probably spend all day on the internet searching. 

 

So can anyone say if class 13.5 pipe is the same as schedule 40 pipe (from the west)?

[Thainesss]

9 minutes ago, HTC said:

So can anyone say if class 13.5 pipe is the same as schedule 40 pipe (from the west)?

 

SDR 13.5 and Schedule 40 pipes have the same outside diameter, but the schedule 40 pipe will have a smaller ID than the SDR 13.5 pipe. 

 

In other words if you order an insert for a Schedule 40 pipe and stick it in an SDR 13.5 pipe it will have more play/wiggle. 

 

Id try and find one for SDR 13.5 pipe but I believe a SCH 40 would work if you soak it in glue, being that the application is gravity only, no pressure. 

[Thainesss]

I think it was mentioned already but you could just have your local builder bang out around that existing pipe and tile and add an extension, then tile it back up. 

Couldn't take more than a couple hours and is completely normal stuff for the guys to do. They are always messing up the PVC penetrations. 

[HTC]

44 minutes ago, Thainesss said:

 

SDR 13.5 and Schedule 40 pipes have the same outside diameter, but the schedule 40 pipe will have a smaller ID than the SDR 13.5 pipe. 

 

In other words if you order an insert for a Schedule 40 pipe and stick it in an SDR 13.5 pipe it will have more play/wiggle. 

 

Id try and find one for SDR 13.5 pipe but I believe a SCH 40 would work if you soak it in glue, being that the application is gravity only, no pressure. 

Many thanks for the info ????

[mogandave]

While I’ve never actually tried it, I like the “slit” method already mentioned. 
 

A short piece of slit pipe can join a new piece of 13.5 to the old stub, and a new fitting of your choice cemented all the way down flush to the tile...

[Thainesss]

14 hours ago, Thainesss said:

I think it was mentioned already but you could just have your local builder bang out around that existing pipe and tile and add an extension, then tile it back up. 

Couldn't take more than a couple hours and is completely normal stuff for the guys to do. They are always messing up the PVC penetrations. 

 

Above is still the best option. 

[mogandave]

Just out of curiosity, it it’s an overflow, why do you want to attach a fitting?

 

personally, I would not break up the tile. Given it’s a drain, and assuming it does not need to support any real weight, could even just butt anther piece up to it and epoxy. 
 

I still like the split-sleeve insert. 
 

If you just want to make it look better, have a stainless collar turned at a local machine shop and pound it in. 

[HTC]

3 hours ago, mogandave said:

Just out of curiosity, it it’s an overflow, why do you want to attach a fitting?

 

personally, I would not break up the tile. Given it’s a drain, and assuming it does not need to support any real weight, could even just butt anther piece up to it and epoxy. 
 

I still like the split-sleeve insert. 
 

If you just want to make it look better, have a stainless collar turned at a local machine shop and pound it in. 

Basically a bit of a cock up with the swimming pool design.

 

The overflow tray water level is too high. When swimming too much water is splashing out the overflow pipe, so I'm spending an arm and a leg on my water bill.

 

I'm planning to fit a 180 degree bend to face the tiles. In addition lower the ball valve (and water level) to alleviate the problem.

[Outbackoz]

On 11/24/2019 at 12:47 PM, Outbackoz said:

C

 

Depending on the class of blue pipe (see above) this Internal diameter (ID) of the pipe will vary according to wall thickness. Suggest you measure with a set of verniers or if you eyesight is good with a steel ruler. Let's know what size pipe and can hopefully give some advice    

 

 

So far looks like you have received some reasonable ideas, Personally, I would probably go down the path of carefully removing sufficient grout/ cement around the outside of the pipe to allow fitment of a 2" socket/elbow or fitting your considering. you may nee to carefully grind away a small amount of a tile to get sufficient clearance. If you decide to go with an internal fitting  there have been some good ideas put forward here also. A possible alternative for an internal fitting is to use a 1.5inch socket which has a Outside diameter (OD) circa 57.5mm and reduce in size to fit. If you do go this way it you will be down to a wall thickness of around 2.5mm so it may be worthwhile to insert a small piece of 1.5inch pipe and cut it off flush on the end to be size reduced to add to rigidity. hope this helps!????

 

I did note with interest your float assembly and what the impact would be if the adhesive failed on the wall elbow as result of torsional effect from float assembly

[mogandave]

If you have room, I think you could pound a wooden plug in the end of the pipe to center/guide a hole-saw you could cut around the pipe and chip it out (as mentioned above) pretty easily. 
 

attach the new fitting and re-grout. Would look nice and clean...

[HTC]

2 hours ago, Outbackoz said:

I did note with interest your float assembly and what the impact would be if the adhesive failed on the wall elbow as result of torsional effect from float assembly

Good point. There is a second valve on the outside of the pool wall to isolate the water if there is a problem.

 

I actually think the ball float valve arrangement is rather ugly. I might look into another style of floating valve .... but that would be for another topic thread I guess.

 

Maybe something like this would be better?

https://s.lazada.co.th/s.ZuNAs

 

For now I will keep an eye on it.

Edited November 25, 2019 by HTC

[HTC]

I do like the option of chipping out the grout. I think I will call the guy that fitted the pool tiles. My wife has his number.

 

I'm not confident enough to do that myself.

[shaemus]

13 hours ago, HTC said:

I do like the option of chipping out the grout. I think I will call the guy that fitted the pool tiles. My wife has his number.

 

I'm not confident enough to do that myself.

go to global house and buy an internal reducer made by scg.

 

Shaemus

scg pipe fittings pvc.pdf

[HTC]

7 hours ago, shaemus said:

go to global house and buy an internal reducer made by scg.

 

Shaemus

scg pipe fittings pvc.pdf 8.54 MB · 0 downloads

Awesome, thanks for that!

[shaemus]

4 hours ago, HTC said:

Awesome, thanks for that!

i hope it works for you, i have noticed that most thai fittings are 13.5 (bar) so i hope that this fits your requirement. there may well be other brands around that you can source but personally i only use SCG as a rule, Dependent on which retailer you go to will dictate what is available in the range that the buyers/reps have chosen to stock. e.g ThaiWatsadu has a totally different brand of pvc also with some UPVC thrown in for good measure. I buy my PVC unions from Thai Watsadu as they stock them.

 

Best of luck 

 

Shaemus 

[Outbackoz]

On 11/26/2019 at 3:45 PM, HTC said:

Awesome, thanks for that!

Looks like it may well do the job! same fitting in Oz but never here! good find by Shaemus.

[shaemus]

1 hour ago, Outbackoz said:

Looks like it may well do the job! same fitting in Oz but never here! good find by Shaemus.

I have spent many an hour traipsing the SCG isle at Global house, there is some Logic to it but i cant quite get it.

 

I bought some White ERA fittings the other day and they were quite cheap. certainly much cheaper than i have seen the same brand for in Australia. It seems to be the only cheap thing available here in Thailand. Plastic

 

Shaemus