blz6662 Posted August 18, 2022 Share Posted August 18, 2022 Hi All,A good while ago I bought this Kismet 279 ramp of a guy that was closing down but although I have seen the ramp in action when I came to pick it up most of the copper pipework was cut, bend or missing. I wish I had taken some photos when it was working and fully plumbed.I'm now trying to recommission it and not entirely sure what goes where although on the main control block there is existing pipework to the foot valve and I know the flexible that goes to the beam lifting valve on the ramp. I've searched for a hydraulic circuit diagram for this but no luck.I was playing with the idea of using flexibles on all the connections but not sure if I should just replace it with copper. The fitting size is 3/8" bsp and the copper pipe is 3/8"o/d (10mm) thick wall - 7mm i/d.From the pictures I'm hoping someone can help. I'm in the process of drawing up a circuit of how I think it goes but I think there maybe a couple of directions it could go. Just wondering if I should go pump connection straight to cylinder foot valve or pump to the control valve on the column.Once I have completed the 2 versions I'll post them up for comments but if anyone has the knowledge then please help.Many thanks in advanceblz6662 Quote Link to comment Share on other sites More sharing options...
steve b Posted August 18, 2022 Share Posted August 18, 2022 I've never seen copper used in high pressure hydraulic systems . It would serve ok in no pressure returns I suppose . You could try Garage Equipment Direct , I've found them very knowledgeable with older 4 post lifts . Steve Quote Link to comment Share on other sites More sharing options...
simonr Posted August 18, 2022 Share Posted August 18, 2022 5 hours ago, steve b said: I've never seen copper used in high pressure hydraulic systems . Brake pipes? Brakes run at about 100 Bar. I've never seen it used like this either - but if the pipe is suitably rated, I can't see an issue with it. Just found this on Hydraquip's site: Looks like it could be good for about 90 Bar.https://hydraquip.co.uk/product/metric-copper-tubing-annealed-to-bs-en12449-c106-soft/ Quote Link to comment Share on other sites More sharing options...
steve b Posted August 18, 2022 Share Posted August 18, 2022 I'm well aware of brake line pressure .... My lift runs at 180 bar , a normal hydraulic system operating pressure . All the rigid pipes within the power pack are steel . Flexible pipes are twin wire . The OP also asked if flexible pipes could replace the missing copper runs which would be fine if not immersed in oil within the tank and also properly secured to avoid any chafing with moving parts. The flexi's obviously need to be up to the operating pressure of the system . If nothing else , a good reason to give a specialist spares supplier such as the one I mentioned a call for some basic facts . I'm sure most are aware of the potential dangers of high pressure Hydraulic systems Steve Quote Link to comment Share on other sites More sharing options...
Kelvinh Posted July 29, 2023 Share Posted July 29, 2023 Hi did you get your kismet ramp plumbed up if so could you send some pictures as I am in exactly the same situation as you were thanks Quote Link to comment Share on other sites More sharing options...
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