Pocster Posted October 14, 2019 Share Posted October 14, 2019 Ok . Got some 15mm Hep2o tested its ‘bendability ‘ - kinks quite easy . I need to get it through a 200mm solid wall - bend to run up it the bend at the ceiling . I see these ‘cold formers’ would that do what I need ? ( 1 at each bend ) . Desperately trying to avoid any joints . Plan was maybe to drill a 20mm hole through wall so 15mm Hep2o has wiggle room . Perhaps that former goes half in the wall ?? Link to comment Share on other sites More sharing options...
Onoff Posted October 14, 2019 Share Posted October 14, 2019 120mm radius: tgl-coshh-tech-hep20-performance.pdf 1 Link to comment Share on other sites More sharing options...
Jeremy Harris Posted October 14, 2019 Share Posted October 14, 2019 Can you angle the hole through the wall to reduce the angle of the bends? 1 Link to comment Share on other sites More sharing options...
Barney12 Posted October 14, 2019 Share Posted October 14, 2019 As Jeremy says, try and create the hole at an angle. The Cold form bends do work very well at creating a reasonably tight radius without kinking. I'd also be putting a sleeve (or wrap in wadding) where it passes through the block work but I've seen plenty of "professional" [cough] installs where they don't bother. 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted October 14, 2019 Share Posted October 14, 2019 Give Beckham a ring, see if he'll fettle it with his right foot? No? Ok, I'll get me coat. 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 14, 2019 Author Share Posted October 14, 2019 29 minutes ago, JSHarris said: Can you angle the hole through the wall to reduce the angle of the bends? Yeah I guess so . Still a tight turn at the ceiling - but a good point ! Link to comment Share on other sites More sharing options...
Pocster Posted October 14, 2019 Author Share Posted October 14, 2019 25 minutes ago, Barney12 said: As Jeremy says, try and create the hole at an angle. The Cold form bends do work very well at creating a reasonably tight radius without kinking. I'd also be putting a sleeve (or wrap in wadding) where it passes through the block work but I've seen plenty of "professional" [cough] installs where they don't bother. Yeah - that’s why I was making the hole larger so perhaps I can put some kind of sleeve around it . Link to comment Share on other sites More sharing options...
joe90 Posted October 14, 2019 Share Posted October 14, 2019 How far from hole to ceiling. Can you not drill at ceiling height? Link to comment Share on other sites More sharing options...
Jeremy Harris Posted October 14, 2019 Share Posted October 14, 2019 20mm flexible electrical conduit has a bore of about 16mm, and is pretty much ideal for protecting 15mm pipe where it goes through walls. Likewise, 32mm flexible electrical conduit is sort of OK for 22mm pipe (it has a bore of about 25mm, so the pipe's a bit of a sloppy fit). 1 Link to comment Share on other sites More sharing options...
Onoff Posted October 14, 2019 Share Posted October 14, 2019 BFO drill bit, wiggle: 2 Link to comment Share on other sites More sharing options...
Oz07 Posted October 14, 2019 Share Posted October 14, 2019 Cant you use a speed fit coldform bend or is the pipe a lot stiffer than s/fit? Link to comment Share on other sites More sharing options...
Pocster Posted October 14, 2019 Author Share Posted October 14, 2019 (edited) 57 minutes ago, joe90 said: How far from hole to ceiling. Can you not drill at ceiling height? I could. But I've got about 20 pipes to get through this wall. Thought it would be easier going vertical through the wall then up. Also I can line up each pipe to the manifold so it runs horizontal into it. I'll attempt a "1st go" tomorrow and post pics. I'm guessing as I have a false ceiling the pipe might 'naturally' curved ok at that point. Edited October 14, 2019 by pocster Link to comment Share on other sites More sharing options...
Pocster Posted October 14, 2019 Author Share Posted October 14, 2019 20 minutes ago, Oz07 said: Cant you use a speed fit coldform bend or is the pipe a lot stiffer than s/fit? Not sure. Ordered a few 'cold bends' to see. Sure they will come in useful somewhere! Link to comment Share on other sites More sharing options...
AdamSee Posted October 14, 2019 Share Posted October 14, 2019 The speedfit cold form that Toolstation sell (but keep limited stock of) is the same as the Hep2o ones, I've used a lot of them rather than putting in joins everwhere and its been just fine. When passing it through a wall its best to use a bit of conduit as to not score it. I've found a dishwasher waste pipe to be the perfect size for the job and comes in handy lengths rather than having to buying 25m of the dam stuff. 1 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 14, 2019 Author Share Posted October 14, 2019 (edited) 15 minutes ago, AdamSee said: The speedfit cold form that Toolstation sell (but keep limited stock of) is the same as the Hep2o ones, I've used a lot of them rather than putting in joins everwhere and its been just fine. When passing it through a wall its best to use a bit of conduit as to not score it. I've found a dishwasher waste pipe to be the perfect size for the job and comes in handy lengths rather than having to buying 25m of the dam stuff. What’s the diameter of a dishwasher waste pipe ? . Just bought a 25mm drill bit - so if it fits in that ( and Hep2o in dishwasher pipe ) then perfect ! Edited October 14, 2019 by pocster Link to comment Share on other sites More sharing options...
Pocster Posted October 14, 2019 Author Share Posted October 14, 2019 2 minutes ago, pocster said: What’s the diameter of a dishwasher waste pipe ? . Just bought a 25mm drill bit - so if it fits in that ( and Hep2o in dishwasher pipe ) then perfect ! Googling seems to range from 16mm to 20mm . If that’s correct would be good ! Link to comment Share on other sites More sharing options...
Oz07 Posted October 14, 2019 Share Posted October 14, 2019 the cold form is good the 10mm is a right bar steward to get pipe in Link to comment Share on other sites More sharing options...
ToughButterCup Posted October 14, 2019 Share Posted October 14, 2019 Give Beckham a ring .....? 1 Link to comment Share on other sites More sharing options...
Jeremy Harris Posted October 14, 2019 Share Posted October 14, 2019 40 minutes ago, pocster said: Googling seems to range from 16mm to 20mm . If that’s correct would be good ! I don't know, but flexible plastic 20mm electrical conduit has an ID of 16mm and is pretty cheap: https://www.screwfix.com/p/tower-corrugated-conduit-black-20mm-x-10m/50443 £5.29 for 10m is pretty reasonable, even if you end up throwing some away. 1 Link to comment Share on other sites More sharing options...
Onoff Posted October 14, 2019 Share Posted October 14, 2019 47 minutes ago, pocster said: Googling seems to range from 16mm to 20mm . If that’s correct would be good ! How much do you need? I could give you a length. 1 Link to comment Share on other sites More sharing options...
Jeremy Harris Posted October 14, 2019 Share Posted October 14, 2019 22 minutes ago, Onoff said: How much do you need? I could give you a length. Probably cost more in postage than it would to buy 10m down at Screwies... Link to comment Share on other sites More sharing options...
Construction Channel Posted October 14, 2019 Share Posted October 14, 2019 Have you considered coving? 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 14, 2019 Author Share Posted October 14, 2019 2 minutes ago, Construction Channel said: Have you considered coving? Will have a suspended ceiling . Link to comment Share on other sites More sharing options...
Onoff Posted October 14, 2019 Share Posted October 14, 2019 1 hour ago, Onoff said: How much do you need? I could give you a length. Really? @pocster, you're slipping! 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 14, 2019 Author Share Posted October 14, 2019 5 minutes ago, Onoff said: Really? @pocster, you're slipping! I am aren’t I !! Link to comment Share on other sites More sharing options...
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