8ball Posted May 22, 2017 Share Posted May 22, 2017 Hi guys I am starting my downstairs utility room/toilet and have just removed some of the plasterboard from the boxed in soil pipe and this is what I have As I have never done any plumbing before except install a rad so I thought I would ask a few questions before I start planning the job. So I,m fitting a standard toilet about 90 - 100cm away from this stack and then opposite the toilet is going to be a washing machine, sink and drainage from the combi boiler. Can I remove the orange coupling measuring 14cm in height and trim the pipe coming out of the slab to enable a slip coupling and a FLOPLAST SP190G 92.5° Branch, maybe I'm way off but Ive got to start somewhere. Just a bit of background info -- the stack is vented through the roof upstairs and has 1 toilet, a bath, a shower and sink connected, the stack comes straight down into the slab. Cheers Link to comment Share on other sites More sharing options...
Temp Posted May 22, 2017 Share Posted May 22, 2017 (edited) 27 minutes ago, 8ball said: Can I remove the orange coupling measuring 14cm in height and trim the pipe coming out of the slab to enable a slip coupling and a FLOPLAST SP190G 92.5° Branch, maybe I'm way off but Ive got to start somewhere. Yes that's the best method _if_ the heights work out ok. Obviously the branch has to be lower than the outlet from the WC pan and this can be a problem. Note that you must not cut the stack down too low. You have to leave enough for the slip coupling to slide over as I think the bit of pipe on the branch coupling is too short to slide to coupling over that. If no other option there are these glue and strap bosses... http://www.screwfix.com/p/floplast-sp319g-strap-boss-grey-110mm/93635 See what others suggest. Edited May 22, 2017 by Temp 1 Link to comment Share on other sites More sharing options...
8ball Posted May 22, 2017 Author Share Posted May 22, 2017 (edited) 1 hour ago, Temp said: Yes that's the best method _if_ the heights work out ok. Obviously the branch has to be lower than the outlet from the WC pan and this can be a problem. Note that you must not cut the stack down too low. You have to leave enough for the slip coupling to slide over as I think the bit of pipe on the branch coupling is too short to slide to coupling over that. If no other option there are these glue and strap bosses... http://www.screwfix.com/p/floplast-sp319g-strap-boss-grey-110mm/93635 See what others suggest. Thanks Temp for the advice Edited May 22, 2017 by 8ball Had a blond moment even though I don't have hair Link to comment Share on other sites More sharing options...
8ball Posted May 22, 2017 Author Share Posted May 22, 2017 1 hour ago, Temp said: Yes that's the best method _if_ the heights work out ok. Obviously the branch has to be lower than the outlet from the WC pan and this can be a problem. Note that you must not cut the stack down too low. You have to leave enough for the slip coupling to slide over as I think the bit of pipe on the branch coupling is too short to slide to coupling over that. If no other option there are these glue and strap bosses... http://www.screwfix.com/p/floplast-sp319g-strap-boss-grey-110mm/93635 See what others suggest. How would a 110mm pipe from a toilet connect to the boss you recommended? I looked at the questions and answers on screwfix and the biggest size is 50mm Link to comment Share on other sites More sharing options...
ProDave Posted May 22, 2017 Share Posted May 22, 2017 The slip coupling will NOT go at the bottom. The branch for the pan will need to be a tripple socket branch and will go straight on the stub of pipe coming out of the floor (cut to the right length) The slip coupling will go somewhere above to enable you to join it all back together (as you can't pull it apart) and you might need two slip couplings and insert a short bit of pipe between them. You may also need to expose the stack a bit higher, it might not be possible to get it all in what you have exposed. Link to comment Share on other sites More sharing options...
Barney12 Posted May 22, 2017 Share Posted May 22, 2017 I did almost the identical job a couple of months back. As @ProDave has said you'll need the triple socket at the bottom with the slip above. Have a look at my thread here with pics: Link to comment Share on other sites More sharing options...
8ball Posted May 22, 2017 Author Share Posted May 22, 2017 Thanks for the replies guys, Barney12 that is just what I needed...top man. Just a couple of questions, 1.what's a triple socket? and 2. Exposing my stack a little higher is no problem but is it OK to get rid of that grey vent that's sticking out? Cheers Link to comment Share on other sites More sharing options...
ProDave Posted May 22, 2017 Share Posted May 22, 2017 Tripple socket means all 3 connections are female http://www.screwfix.com/p/floplast-equal-junction-triple-87-5/12152 So the bottom will just plug onto the stub coming out of the ground. Your new branch to the wc will plug into the side, and a bit of pipe then the slip coupling out of the top. Yes that's an underground one, the first I found the the same applies to the above ground ones as well 1 Link to comment Share on other sites More sharing options...
Barney12 Posted May 22, 2017 Share Posted May 22, 2017 37 minutes ago, 8ball said: Thanks for the replies guys, Barney12 that is just what I needed...top man. Just a couple of questions, 1.what's a triple socket? and 2. Exposing my stack a little higher is no problem but is it OK to get rid of that grey vent that's sticking out? Cheers @Nickfromwales might provide a better answer but is that a vent or is it a rodding access point? Link to comment Share on other sites More sharing options...
Nickfromwales Posted May 22, 2017 Share Posted May 22, 2017 It's not a vent . It's a redundant strap on boss which has had a cleaning eye ( aka rodding eye ) fitted into it to blank it off. Prob picked up a waste pipe in another life . Cut it out and get rid as its a liability. ? 1 Link to comment Share on other sites More sharing options...
8ball Posted May 23, 2017 Author Share Posted May 23, 2017 Thanks guys, feel a bit more on track now Cheers Link to comment Share on other sites More sharing options...
PeterW Posted May 23, 2017 Share Posted May 23, 2017 As @ProDave says, it's one you need space for to work so make it easy for yourself. Two slip couplings will make it easier, either use a strap boss above the branch to get the wastes in or go into the side boss but make the turn with two 45 degree bends Link to comment Share on other sites More sharing options...
8ball Posted May 24, 2017 Author Share Posted May 24, 2017 On 23/05/2017 at 09:51, PeterW said: As @ProDave says, it's one you need space for to work so make it easy for yourself. Two slip couplings will make it easier, either use a strap boss above the branch to get the wastes in or go into the side boss but make the turn with two 45 degree bends Thanks for the info Peter, the toilet I am buying/chosen has a 180mm height exit as in pic below, I think the new branch will be to high if I use 2 slip couplings as in your drawing. Hmmm Link to comment Share on other sites More sharing options...
Barney12 Posted May 24, 2017 Share Posted May 24, 2017 I wouldn't use two personally. Just give yourself enough clearance at the top to drop the triple over the existing pipe. That's exactly what I did. Link to comment Share on other sites More sharing options...
8ball Posted May 24, 2017 Author Share Posted May 24, 2017 I'm looking online at present trying to find out the centre point height of the t branch on the Floplast triple socket, I have been to the manif's website looking at PDF's but no luck. Does anyone have one they can take a quick measurement off of? Link to comment Share on other sites More sharing options...
Barney12 Posted May 24, 2017 Share Posted May 24, 2017 7 minutes ago, 8ball said: I'm looking online at present trying to find out the centre point height of the t branch on the Floplast triple socket, I have been to the manif's website looking at PDF's but no luck. Does anyone have one they can take a quick measurement off of? give me 10 mins! Link to comment Share on other sites More sharing options...
8ball Posted May 24, 2017 Author Share Posted May 24, 2017 Just now, Barney12 said: give me 10 mins! Ta Link to comment Share on other sites More sharing options...
Barney12 Posted May 24, 2017 Share Posted May 24, 2017 2 minutes ago, 8ball said: Ta Sorry, scrapp that. I thought I had one but I dont Link to comment Share on other sites More sharing options...
8ball Posted May 24, 2017 Author Share Posted May 24, 2017 (edited) 1 minute ago, Barney12 said: Sorry, scrapp that. I thought I had one but I dont No worries mate, I was just looking for a stubby version of a triple socket which could help if the standard size is to big. I'll nip down to wickes with ma tape measure Edited May 24, 2017 by 8ball Link to comment Share on other sites More sharing options...
8ball Posted May 24, 2017 Author Share Posted May 24, 2017 (edited) The triple sockets seem to be shorter if they are solvent weld, is there any disadvantage with that type of fitting? Ah the difference seems to be that push fit can be twisted/rotated and remounted as solvent is solid and once its fitted its fitted - thanks google Edited May 24, 2017 by 8ball stupid question, should have googled in 1st place Link to comment Share on other sites More sharing options...
Onoff Posted May 24, 2017 Share Posted May 24, 2017 1 hour ago, 8ball said: The triple sockets seem to be shorter if they are solvent weld, is there any disadvantage with that type of fitting? Ah the difference seems to be that push fit can be twisted/rotated and remounted as solvent is solid and once its fitted its fitted - thanks google You need to dry fit things before solvent gets anywhere near the joint and mark joining pieces with a score mark or Sharpie if it won't rub off! Then clean all joints with IPA ideally. Then you apply solvent just turn and align the marks. (Thanks to all who told me this a couple of months ago! Link to comment Share on other sites More sharing options...
Onoff Posted May 24, 2017 Share Posted May 24, 2017 (edited) Me being me but I often use a pipe clip to draw a straight line to cut around: Also found the S'fix plastic mitre block is a perfect fit around 110mm pipe. Bahco saw from S'fix: http://www.screwfix.com/p/bahco-prizecut-hard-point-toolbox-saw-14/44210 FFS don't cut a sh!tty pipe then yourself with the saw! Edited May 24, 2017 by Onoff Link to comment Share on other sites More sharing options...
8ball Posted May 24, 2017 Author Share Posted May 24, 2017 2 minutes ago, Onoff said: Me being me but I often use a pipe clip to draw a straight line to cut around: Also found the S'fix plastic mitre block is a perfect fit around 110mm pipe. Bahco saw from S'fix: FFS don't cut a sh!tty pipe then yourself with the saw! Thanks for the tips Onoff, Ive got all those goodies hanging around in the garage somewhere. Good idea with the pipe clip. "FFS don't cut a sh!tty pipe then yourself with the saw!" Link to comment Share on other sites More sharing options...
Onoff Posted May 24, 2017 Share Posted May 24, 2017 (edited) Tbh if you've a marked line and things are real tight then there's always the multi tool. Oh, don't forget to deburr the cut pipes. Bit of sandpaper / gloves / "DON'T FLUSH" sign in the WC above! Tbh "DON'T USE" might be be better as No1s and 2s might displace water down the stack without flushing. G'teed thd wife/kids will want to use it when you do the job. Edited May 24, 2017 by Onoff 1 Link to comment Share on other sites More sharing options...
Nickfromwales Posted May 24, 2017 Share Posted May 24, 2017 180mm / 7" outlet centre is standard Id go for the 3 socket branch TBH. Link ? Link to comment Share on other sites More sharing options...
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