Lord Geordie Posted August 9, 2018 Report Share Posted August 9, 2018 Cooker is on the fritz after the thermo couple on the FFD failed! Having had the FFD out one can't replace the thermocouple as it's fitted from the inside out, and to open the FFD would pretty much destroy it! So I bought a new one to go in but the fitting on one side is larger 0.500" or there about and needs to be 0.467" so need a bush to adapt between the two! 0.500" being male leading to a female of 0.467" but can not find a difinative size to order the correct bush! If someone could help identifying the bush sizes I can get one ordered and get the thing back up and running as it's sat in bits at the mo and i am having to use a camping stove, as I don't want to use it without the FFD removed. Thanks. Quote Link to comment Share on other sites More sharing options...
ph5172 Posted August 9, 2018 Report Share Posted August 9, 2018 can you not use some cooker high temperature sealant? Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted August 9, 2018 Author Report Share Posted August 9, 2018 I want the job doing right with it being LPG I am dealing with! It's like a 1/2" to 3/8" but it needs a gas fitting as BSP is a different thread pitch. Quote Link to comment Share on other sites More sharing options...
ph5172 Posted August 9, 2018 Report Share Posted August 9, 2018 Will it go on with a bit of persuasion and force as its screwed in? Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted August 9, 2018 Author Report Share Posted August 9, 2018 The fitting just falls into the FFD as it's 0.467" and the hole is 0.500" Quote Link to comment Share on other sites More sharing options...
ph5172 Posted August 9, 2018 Report Share Posted August 9, 2018 6 minutes ago, Lord Geordie said: The fitting just falls into the FFD as it's 0.467" and the hole is 0.500" Ah i see your dilemma now There is high temperature quick steel that could be used to fix it in. It it a threaded insert or friction fit? If friction could you not seal the old hole up and drill a new one, failing that a call to the manufacturers may yield results Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted August 9, 2018 Author Report Share Posted August 9, 2018 It's threaded! I have seen bushings but in BSP thread which is more coarse than the gas fitting! Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted August 9, 2018 Author Report Share Posted August 9, 2018 The FFD has a threaded hole of 0.500" and a thread pitch of 1.0mm I need a bush to fit this that reduces the hole to a 0.467" with a 1.2mm thread pitch! So a bush of 0.500" male to a 0.467" female! They may be metric so It could be male 13mm x 1.25 tpi to female 12mm x 1.0mm tpi. Quote Link to comment Share on other sites More sharing options...
Big Mat Posted August 9, 2018 Report Share Posted August 9, 2018 It could be bsp fine thread Quote Link to comment Share on other sites More sharing options...
Winston72 Posted August 9, 2018 Report Share Posted August 9, 2018 just buy the right thermpocouple, you should be able to source it on ebay Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted August 9, 2018 Author Report Share Posted August 9, 2018 Winston! The thermo couple is fitted from inside the FFD to prevent you from replacing it! To gain access means destroying the complete unit! Hence buying a new complete unit. It's just one of the holes is slightly too large for the coupling hence trying to find a bush. Quote Link to comment Share on other sites More sharing options...
Winston72 Posted August 9, 2018 Report Share Posted August 9, 2018 right lets start at the beginning the themocouple is the Flame Failure Device im guessing your talking abput the flame supervision device on your oven which will be a vapour stat send me the make n model of your cooker, and tell me exactly what its doing Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted August 9, 2018 Author Report Share Posted August 9, 2018 This is the FFD I am trying to install, the thermocouple in the old one had disintegrated and I can't take the FFD apart without destroying! The thermocouple is inserted from the inside out and held in place with a locking nut! Basically when I turn the oven on the flame stays on a low as it is not registering the flame and will not open the valve inside the FFD. Quote Link to comment Share on other sites More sharing options...
Winston72 Posted August 9, 2018 Report Share Posted August 9, 2018 Its not a thermocouple mate, its a liquid expansion valve a normal themocouple will not work, they're usually only 40-50 pounds if the rest of the unit is on good condition may be worth buying one. whats the make and model? Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted August 9, 2018 Author Report Share Posted August 9, 2018 It's a cannon Cambridge and I just bought that complete unit above for it! But the inlet is too large. Hence trying to find a bush to reduce it. I haven't got the money to throw at it hence doing it myself. having already bought the above unit I can't buy another. Quote Link to comment Share on other sites More sharing options...
Saltings Posted August 9, 2018 Report Share Posted August 9, 2018 nip to your local plumbers / boiler repair ang get a union that fits the new housing then when home cut a slot lengthways so you can slip it over the existing pipe and tighten down a tiny bit of boss white or similar before to get a better seal check pipe diameter before going shopping to get a compatible part to help with not making the slot too wide you can squeeze the pipe into an oval shape about an inch away from the fitting hope this gets you out of trouble if on gas side check with soapy water for bubbles all the best Quote Link to comment Share on other sites More sharing options...
Winston72 Posted August 10, 2018 Report Share Posted August 10, 2018 17 hours ago, Saltings said: nip to your local plumbers / boiler repair ang get a union that fits the new housing then when home cut a slot lengthways so you can slip it over the existing pipe and tighten down a tiny bit of boss white or similar before to get a better seal check pipe diameter before going shopping to get a compatible part to help with not making the slot too wide you can squeeze the pipe into an oval shape about an inch away from the fitting hope this gets you out of trouble if on gas side check with soapy water for bubbles all the best you have no idea what your talking about, thats bad advice Quote Link to comment Share on other sites More sharing options...
Saltings Posted August 15, 2018 Report Share Posted August 15, 2018 (edited) On 10/08/2018 at 16:54, Winston72 said: you have no idea what your talking about, thats bad advice you do know if you are a corgi fitter and having gained payment for repair you have to replace with a compatible fitting as a corgi fitter / new condensing boiler etc etc but if working on your own property corgi does not apply and as a private property without monetary gain you can carry out repairs on your own property without corgi registered fitter inc fitting new boilers etc (your self ) can do for your self but cannot do for anyone else crack on if selling on in the future you can get insurance covering repairs etc less than £50 re boiler repairs new upvc window fitting new roof etc etc etc crack on and check what you have done for leaks not rocket science about 6 psi after the meter/ regulator after all you are keeping your family safe not earning big bucks as a plumber and ripping the customers guts out as a tradesman the only trade that disappeared off site in bad weather and put advert in local papers as emergency plumbers and halted progress for all other trades so they could rip old dears guts out for their summer holidays before a riot starts I have worked alongside quite a few really decent first class tradesman/plumbers that wouldn't want their mum ripped off and are still friends after forty years in the building game so not tarring all plumbers with the same brush Edited August 15, 2018 by Saltings Quote Link to comment Share on other sites More sharing options...
B725 Posted August 15, 2018 Report Share Posted August 15, 2018 Indeed a non gas Safe person can unbelievably work on their own property however if as a result of the work causes an accident you will be prosecuted as you cannot be proved to be compitant to work on gas. I have worked with gas most of my adult life and I cannot say that the heating guy's disappear when the weather turns, Quote Link to comment Share on other sites More sharing options...
Winston72 Posted August 15, 2018 Report Share Posted August 15, 2018 10 hours ago, Saltings said: you do know if you are a corgi fitter and having gained payment for repair you have to replace with a compatible fitting as a corgi fitter / new condensing boiler etc etc but if working on your own property corgi does not apply and as a private property without monetary gain you can carry out repairs on your own property without corgi registered fitter inc fitting new boilers etc (your self ) can do for your self but cannot do for anyone else crack on if selling on in the future you can get insurance covering repairs etc less than £50 re boiler repairs new upvc window fitting new roof etc etc etc crack on and check what you have done for leaks not rocket science about 6 psi after the meter/ regulator after all you are keeping your family safe not earning big bucks as a plumber and ripping the customers guts out as a tradesman the only trade that disappeared off site in bad weather and put advert in local papers as emergency plumbers and halted progress for all other trades so they could rip old dears guts out for their summer holidays before a riot starts I have worked alongside quite a few really decent first class tradesman/plumbers that wouldn't want their mum ripped off and are still friends after forty years in the building game so not tarring all plumbers with the same brush Cant remeber what CORGI said i tend to stick to gas safe Quote Link to comment Share on other sites More sharing options...
ph5172 Posted August 15, 2018 Report Share Posted August 15, 2018 What was the outcome of this? Just out of interest Quote Link to comment Share on other sites More sharing options...
figgy Posted August 15, 2018 Report Share Posted August 15, 2018 You can buy reducing bushes in every sort of thread, take it to a plumbing / heating replacement parts center merchants and have them check the threads for size and type. Hopefully Winston will sort out what you need. Quote Link to comment Share on other sites More sharing options...
Winston72 Posted August 15, 2018 Report Share Posted August 15, 2018 we found the bits just need sizing god bless the bay £2.51 Quote Link to comment Share on other sites More sharing options...
Lord Geordie Posted August 18, 2018 Author Report Share Posted August 18, 2018 All sorted now! Would have updated sooner, but things with Mum n Dad are not good at the mo so having to spend a lot of time sorting things for them. thanks for all the help chaps! I really appreciate the knowledge I gain from here. Quote Link to comment Share on other sites More sharing options...
marsh man Posted August 18, 2018 Report Share Posted August 18, 2018 17 minutes ago, Lord Geordie said: All sorted now! Would have updated sooner, but things with Mum n Dad are not good at the mo so having to spend a lot of time sorting things for them. thanks for all the help chaps! I really appreciate the knowledge I gain from here. Glad your all sorted L G and had a satisfactory outcome , there are certainly some very helpful chaps on this forum who have helped me out a few times as well and like you say , there help is very much appreciated . P S ....... Hope there is good or at least better news with your mum and dads problems . Quote Link to comment Share on other sites More sharing options...
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