Pocster Posted March 9, 2020 Share Posted March 9, 2020 Almost there ! So the internal black pipe is weld stuff . Man hole connection is push fit - how do I marry these 2 up ? Also during my excavation I inadvertently stuck the pick axe through the pipe ? A cut section of curved pipe would act as a nice plaster over the hole . Assume this stuff isn’t weld friendly so CT1 it in place ?? Link to comment Share on other sites More sharing options...
Jeremy Harris Posted March 9, 2020 Share Posted March 9, 2020 Definitely cut out the damaged section of pipe and fit a new section in, rather than bodging it with a patch. The last thing you want is to have the pipe fail later and need digging out to fix properly. If you can't get the whole run of damaged pipe out easily, then you could fit a section of new pipe, joined to the old with a coupler. In order to get the new section in you may need to use a slip coupler, so that it can be slid over the pipe completely, then slid back over the joint when the pipe's in place. 1 Link to comment Share on other sites More sharing options...
Pocster Posted March 9, 2020 Author Share Posted March 9, 2020 32 minutes ago, Jeremy Harris said: Definitely cut out the damaged section of pipe and fit a new section in, rather than bodging it with a patch. The last thing you want is to have the pipe fail later and need digging out to fix properly. If you can't get the whole run of damaged pipe out easily, then you could fit a section of new pipe, joined to the old with a coupler. In order to get the new section in you may need to use a slip coupler, so that it can be slid over the pipe completely, then slid back over the joint when the pipe's in place. That’s going to be a right PITA to dig out ; so I can lift the pipe high enough so I can get a coupler over it ! Link to comment Share on other sites More sharing options...
Pocster Posted March 9, 2020 Author Share Posted March 9, 2020 Weld coupler fits over push fit pipe fine . But I can’t weld these 2 guys together can I ???? Push fit coupler doesn’t go over weld pipe . Both have a rubber flange which seems to stop them pairing up ... Link to comment Share on other sites More sharing options...
Jeremy Harris Posted March 9, 2020 Share Posted March 9, 2020 1 minute ago, pocster said: That’s going to be a right PITA to dig out ; so I can lift the pipe high enough so I can get a coupler over it ! If you make a straight cut across the pipe, in a couple of places either side of the damage, you should be able to lift the damaged part away and then lift the bit that's fitted to the bend away. You can then fit a slip coupler over the new bit of pipe, slide it into the bend and then line it up with the good section of remaining pipe and slide the slip coupler over the joint. I had to do something just like this a while ago, and as long as the pipe ends are chamfered well, and lubricated, it isn't too hard to do. 1 Link to comment Share on other sites More sharing options...
Pocster Posted March 9, 2020 Author Share Posted March 9, 2020 5 minutes ago, pocster said: That’s going to be a right PITA to dig out ; so I can lift the pipe high enough so I can get a coupler over it ! Ah bum ! @Jeremy Harris you are of course correct ! . Will do it properly with a coupler . Better now than problem later ! Link to comment Share on other sites More sharing options...
Pocster Posted March 9, 2020 Author Share Posted March 9, 2020 Hmmmm - called around a few plumbing online retailers - doesn’t apparently seem possible !! . Problem seems to be the rubber flange on the push fit stops the weld fit going in ( even the weld fit end with no flange ) Link to comment Share on other sites More sharing options...
Oz07 Posted March 9, 2020 Share Posted March 9, 2020 Use a flex seal on solvent to u/g 1 Link to comment Share on other sites More sharing options...
Pocster Posted March 9, 2020 Author Share Posted March 9, 2020 11 minutes ago, Oz07 said: Use a flex seal on solvent to u/g Need to look that up . but !!! I managed to force weld fit straight into the access chamber ! By pure luck of course ! So ! Coupler on internal soil to a length of weld pipe ‘push fitted’ into chamber ! Link to comment Share on other sites More sharing options...
Pocster Posted March 9, 2020 Author Share Posted March 9, 2020 Rains beaten me ! Went for it and removed the crack - just the final connection to go ! Thanks for all the help ! 1 Link to comment Share on other sites More sharing options...
Pocster Posted March 10, 2020 Author Share Posted March 10, 2020 Done ? Link to comment Share on other sites More sharing options...
ProDave Posted March 10, 2020 Share Posted March 10, 2020 I don't understand your problem. The black "solvent weld" and the brown "underground" pipe are exactly the same size and BOTH will fit a push fit connector. That is how you join them. You can use a mix of solvent weld and push fit on the same pipe inside if you wish. Strictly speaking you should have finished the black pipe just inside the house and that bit from the house to the inspection chamber should be brown. The brown stuff is stronger and less likely to crush or break. Link to comment Share on other sites More sharing options...
Pocster Posted March 10, 2020 Author Share Posted March 10, 2020 44 minutes ago, ProDave said: I don't understand your problem. The black "solvent weld" and the brown "underground" pipe are exactly the same size and BOTH will fit a push fit connector. That is how you join them. You can use a mix of solvent weld and push fit on the same pipe inside if you wish. Strictly speaking you should have finished the black pipe just inside the house and that bit from the house to the inspection chamber should be brown. The brown stuff is stronger and less likely to crush or break. Black pipe wouldn’t fit in a brown pipe coupler . That was the issue ; and I couldn’t weld a black coupler to the brown pipe . The difference in diameter is minimal but enough to cause a problem . I seem to recall some threads on here where 110mm in one make is not the same as 110mm in another make i.e one of them isn’t 110mm . Link to comment Share on other sites More sharing options...
ProDave Posted March 10, 2020 Share Posted March 10, 2020 Never encountered that, I have found 110mm of all makes and colours has the same outside diameter (unlike smaller diameter waste pipes) You did chamfer the end of the black pipe and lubricate it? Link to comment Share on other sites More sharing options...
Pocster Posted March 10, 2020 Author Share Posted March 10, 2020 10 minutes ago, ProDave said: Never encountered that, I have found 110mm of all makes and colours has the same outside diameter (unlike smaller diameter waste pipes) You did chamfer the end of the black pipe and lubricate it? Yep - chamfer and lube up . Agree it shouldn’t really be black pipe exterior but it’s a short run and will probably get buried in concrete Link to comment Share on other sites More sharing options...
Mike Posted March 10, 2020 Share Posted March 10, 2020 1 hour ago, pocster said: it’s a short run and will probably get buried in concrete Don't do that; drainage pipes should normally be bedded and surrounded on as-dug material or pea gravel to enable the pipes to flex with ground movement, rather than cracking. Check out the installation guide for the brand you're using. 1 Link to comment Share on other sites More sharing options...
Pocster Posted March 10, 2020 Author Share Posted March 10, 2020 11 minutes ago, Mike said: Don't do that; drainage pipes should normally be bedded and surrounded on as-dug material or pea gravel to enable the pipes to flex with ground movement, rather than cracking. Check out the installation guide for the brand you're using. Ok ! Won’t embed it ! Pea gravel all around and over when I’m ready . Link to comment Share on other sites More sharing options...
Pocster Posted March 14, 2020 Author Share Posted March 14, 2020 A compromise ! Took some plastic black pipe to builders merchants . Bought a new brown pipe coupler that also fits the black . So ; a compromise was born ! ; just the black coupler exposed externally. 1 Link to comment Share on other sites More sharing options...
Onoff Posted March 14, 2020 Share Posted March 14, 2020 Is that outside tap over a drain? Link to comment Share on other sites More sharing options...
ProDave Posted March 14, 2020 Share Posted March 14, 2020 7 minutes ago, Onoff said: Is that outside tap over a drain? Why? mine isn't. Link to comment Share on other sites More sharing options...
Onoff Posted March 14, 2020 Share Posted March 14, 2020 12 minutes ago, ProDave said: Why? mine isn't. I just wondered if he was going to use it for say washing down garden tools, rinsing buckets, boots etc. As in where any excess water will go. Link to comment Share on other sites More sharing options...
ProDave Posted March 14, 2020 Share Posted March 14, 2020 I have one inside my garage not over a drain (but close to the door) for hosepipe use. I prefer that to being outside. Link to comment Share on other sites More sharing options...
Pocster Posted March 14, 2020 Author Share Posted March 14, 2020 It is over the drain ; though that wasn’t anything to do with it’s placement. I didn’t want to install 2 taps ( one for rear , other for front ) so just installed one half way . 1 Link to comment Share on other sites More sharing options...
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