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Post by Telemachus on Apr 20, 2020 21:48:06 GMT
For gas I think you need to use gunge with the old fashioned cast iron threaded-end pipes (which you would never find on a boat) but that’s about it. With copper pipe compression fittings the only thing is to try to use copper olives, not brass (which is much harder)
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Post by Deleted on Apr 20, 2020 21:48:14 GMT
Well ok then. But there are quite a few gas fitters who say the opposite (at just a glance). Anyhow who am I to argue?
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Post by Telemachus on Apr 20, 2020 21:49:46 GMT
Well ok then. But there are quite a few gas fitters who say the opposite (at just a glance). Anyhow who am I to argue? Of course there are. There are cowboys everywhere! Oh and since it seems you have forgotten, you are nemesis.
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Post by Deleted on Apr 20, 2020 22:02:54 GMT
Well ok then. But there are quite a few gas fitters who say the opposite (at just a glance). Anyhow who am I to argue? Of course there are. There are cowboys everywhere! Oh and since it seems you have forgotten, you are nemesis. Well it does seem you are correct as usual...groan. What does 'it seems you have forgotten, you are nemesis' supposed to mean?
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Post by Jim on Apr 22, 2020 6:07:32 GMT
Red Haematite. Same as the old gasket gloop, but a bit thicker. I have a tube of Calortite lurking, came with the boat.
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Post by Telemachus on Apr 22, 2020 6:28:28 GMT
Of course there are. There are cowboys everywhere! Oh and since it seems you have forgotten, you are nemesis. Well it does seem you are correct as usual...groan. What does 'it seems you have forgotten, you are nemesis' supposed to mean? You asked “who am I”. I was just answering that for you.
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Post by Jim on Apr 22, 2020 7:48:51 GMT
Well it does seem you are correct as usual...groan. What does 'it seems you have forgotten, you are nemesis' supposed to mean? You asked “who am I”. I was just answering that for you. We could always ask Nurse. She'll know.
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Post by phil70 on Apr 22, 2020 22:23:49 GMT
No there is not normally a need for PTFE tape on water pipes. Setting aside that water pipes are mostly plastic push fit these days, there is no need for PTFE tape on compression water pipe joints. Nor on tap fittings. If present, it is like a big sign saying “Cowboy at work”. There is obviously no need for PTFE tape on solder joints! The only time you might need PTFE tape is on a BSP threaded connection where the seal is the threads. The rest of the time, the seal is not made by the threads and tape is therefore ridiculous. (But you do see it!). As stated, only compression fittings are allowed on boat gas pipes and if you add unnecessary gunge to those, I guess there is a chance that later on the gunge will dry out, shrink (creating a leak) or flake off inside the pipe (blocking jets etc). Anyway, it is completely unnecessary. The gunge was non-setting...right, time for some internet wisdom-gathering... Are we talking about Hermatite? Phil
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Post by Deleted on Apr 22, 2020 23:13:25 GMT
The gunge was non-setting...right, time for some internet wisdom-gathering... Are we talking about Hermatite? Phil Yes. It was so long ago since I used it I'd forgotten the name. But it seems using any kind of joint compound is bad. Back then you asked at the chandlery closest to hand and went with that. But things have moved on since then, these days you can ask the internet and get five different sorts of bullshit. It seems there are also conflicting opinions on whether or not you are compelled to install a test-point for a manometer. Que surprise.
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Post by peterboat on Apr 22, 2020 23:18:58 GMT
For gas I think you need to use gunge with the old fashioned cast iron threaded-end pipes (which you would never find on a boat) but that’s about it. With copper pipe compression fittings the only thing is to try to use copper olives, not brass (which is much harder) On Gas conversions on vehicles its brass olives only, but it is high pressure gas I suppose. Plus we now use plastic pipe to E67R and the fittings are steel, it tends to be more reliable than copper, which sometimes cracks on the joint. no matter how well its clipped to the body. The plastic pipe is fireproof for a period of time, but whether it would be allowed on boats ever is debatable as sometimes they are in the dark ages
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Post by phil70 on Apr 23, 2020 6:58:11 GMT
For gas I think you need to use gunge with the old fashioned cast iron threaded-end pipes (which you would never find on a boat) but that’s about it. With copper pipe compression fittings the only thing is to try to use copper olives, not brass (which is much harder) On Gas conversions on vehicles its brass olives only, but it is high pressure gas I suppose. Plus we now use plastic pipe to E67R and the fittings are steel, it tends to be more reliable than copper, which sometimes cracks on the joint. no matter how well its clipped to the body. The plastic pipe is fireproof for a period of time, but whether it would be allowed on boats ever is debatable as sometimes they are in the dark ages Ref plastic pipes, I suspect they would be a no-no based on the fact I had to have a plastic spill rail replaced with metal and rubber. Yeah the idea that plastic was no good but rubber was OK kinda phased me a bit but there you go that's the BSC for you Phil
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