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water pipes have gone hard - time to replace?
#11
ah thats the place i ordered my lot from! I actually fill the PVC stuff with boiling water, leave it for 10-15 seconds then tip it out and get to work asap before it cools down. Makes it plyable like silicone then.
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#12
Hehe done that for creating curly/pigs tail air pipes, although we did use a 3inch diameter bit of pipe with steam running through it to shape the pipe, instead of a kettle Big Grin
 😇 Heaven doesn’t want me...
And Hell is afraid I’ll take over! 😈
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#13
Well,  I bit the bullet.  Stuff ordered.

I went on that well known auction site, and bought THIS - 2.4m of 16/22mm tubing, an outlet pipe (which I don't need) and a spraybar (which I definitely do - I'm a firm believer in the buggers).   It's Eheim kit, it's at a decent price, and I jumped quite happily Big Grin
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#14
was looking for a kit like that the other week. Couldn't find anything so opted for a more industrial setup.
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#15
Good tip for Eheim pipework. Its extremely stiff and so its quite easy to break plastic pieces when trying to get the pipe fitted. So, dip the end of the pipe into hot water. Not boiling, Hot and this will soften the pipe end to the point that it will go on easily. then as it cools, shrink to a nice watertight fit.
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#16
(16-05-2019, 03:31 PM)Toeknee Wrote: Good tip for Eheim pipework. Its extremely stiff and so its quite easy to break plastic pieces when trying to get the pipe fitted. So, dip the end of the pipe into hot water. Not boiling, Hot and this will soften the pipe end to the point that it will go on easily. then as it cools, shrink to a nice watertight fit.

Definitely an "oldie but goodie" Big Grin

If you have access to a mandrel bender, it's not too difficult to make some really nice bends with the stuff, for a superb custom fit for the pipe run.  If you don't,  fit a tap fitting on one end (and make sure it's closed), fill  with hot water, fit a tap fitting the other end and close, dip into hot water again (or pour from kettle - for tight localised bends my preferred option) and make your bends.  Use oven gloves/tea towels or similar to handle the pipe, it will be HOT.  the internal water pressure will make it easier to achieve a bend without crimping the pipe in the process.   Be VERY careful with this method - make sure you are aware where the pipe ends are at all times, and keep them pointed away from you or anything else that could be harmed by a sudden spurt of very hot water.    Last time I did it, I duct-taped tea towels over each end just in case.  It was long enough ago that the duct tape was the "old school" type that can't be ripped easily...
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