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- 5,439
Been a while since my last one. Like to accumulate them sometimes for a barrage.
1. Old school / experienced guys - what was the most recent thing you learnt about plumbing?
2. Why are there sometimes two, in-line, separate means of isolation on a filling loop?
3. Can you put the end of an end-feed drain-off into a compression fitting? Never tried it. Looks like there might not be enough of it.
4. I often dismantle pre-existing compression joints while working to find there is no ptfe at all round the olive and often the joint was barely tight. Most recently on a combi system under a rad. How has this not leaked? Did they use a jointing compound that has since evaporated? But wouldn't that the leak? Or is it actually not really necessary to use ptfe all the time?
1. Old school / experienced guys - what was the most recent thing you learnt about plumbing?
2. Why are there sometimes two, in-line, separate means of isolation on a filling loop?
3. Can you put the end of an end-feed drain-off into a compression fitting? Never tried it. Looks like there might not be enough of it.
4. I often dismantle pre-existing compression joints while working to find there is no ptfe at all round the olive and often the joint was barely tight. Most recently on a combi system under a rad. How has this not leaked? Did they use a jointing compound that has since evaporated? But wouldn't that the leak? Or is it actually not really necessary to use ptfe all the time?