mark99 Posted October 31, 2015 Report Share Posted October 31, 2015 http://www.ebay.co.uk/itm/Rare-Gardner-Bronze-Coolant-Sight-Glass-LW-L2-LK-/151853670954?hash=item235b2f222a I've never seen one of these before. I have a sight glass on the header tank. Link to comment Share on other sites More sharing options...
Split Pin Posted October 31, 2015 Report Share Posted October 31, 2015 (edited) Its not a level sight gauge, as you would have on a tank, its a flow sight gauge and is fitted in line onto the top rail outlet before a tee piece and taps which control the coolant flow on engines fitted with reciprocating piston pumps, also used with the gear pump that is also currently listed. Although that looks to be flanged for a Gardner they were used on other engines to. It has a swinging indicator so that you can be sure that the engine is being cooled, Similar ones are available for industrial use, a quick search found these I have a cast iron version on the shelf taking up space, maybe it will be worth selling. Steve Edited October 31, 2015 by Split Pin Link to comment Share on other sites More sharing options...
mark99 Posted November 9, 2015 Author Report Share Posted November 9, 2015 Cheers SP. I've also been digging, since as as I'm in the meter trade, I may be "field testing" this little number soon <if I can be bothered to drain/refill coolant> albeit our meters pass 1,000 cubic metres per hour. http://www.gemssensors.co.uk/Flow/Electronic-Flow-Sensors/Rotor-Flow/RFI-types-Flow-Sensor Link to comment Share on other sites More sharing options...
Split Pin Posted November 9, 2015 Report Share Posted November 9, 2015 If you are fitting it to an engine with a centrifugal pump, maybe you can get some idea of coolant flow at different engine speeds. When trying to work out heat transfer its one of the unknown's. Steve Link to comment Share on other sites More sharing options...
Tom3 Posted February 4, 2016 Report Share Posted February 4, 2016 These coolant sight glasses were fitted to the LW and L3 range of engines - the flange fittings are the correct pitch to match the water rail on these engines.The flow indicator is a stainless steel flap which hangs down - by gravity - and the flow pushes it out of the way so you can see the coolant flowing- the whole thing is in brass so can be made pretty with a bit of polishing.as well as having the peace of mind that the coolant is flowing.They are available. Link to comment Share on other sites More sharing options...
MtB Posted February 4, 2016 Report Share Posted February 4, 2016 http://www.ebay.co.uk/itm/Rare-Gardner-Bronze-Coolant-Sight-Glass-LW-L2-LK-/151853670954?hash=item235b2f222a I've never seen one of these before. I have a sight glass on the header tank. I have a very similar flow indicator on my Kelvin. Bronze cast with glass ports front and back. I bought it brand new seven or eight years ago having found them for sale on the net somewhere. Hundred quid-ish IIRC. If you want one I'll have a look on it for a label or name. Would post up a photo but not on the boat tonight. Tomorrow if I remember! Link to comment Share on other sites More sharing options...
mark99 Posted February 6, 2016 Author Report Share Posted February 6, 2016 I have a very similar flow indicator on my Kelvin. Bronze cast with glass ports front and back. I bought it brand new seven or eight years ago having found them for sale on the net somewhere. Hundred quid-ish IIRC. If you want one I'll have a look on it for a label or name. Would post up a photo but not on the boat tonight. Tomorrow if I remember! All info gratefully received. Link to comment Share on other sites More sharing options...
by'eck Posted February 6, 2016 Report Share Posted February 6, 2016 Cheers SP. I've also been digging, since as as I'm in the meter trade, I may be "field testing" this little number soon <if I can be bothered to drain/refill coolant> albeit our meters pass 1,000 cubic metres per hour. http://www.gemssensors.co.uk/Flow/Electronic-Flow-Sensors/Rotor-Flow/RFI-types-Flow-Sensor Old style petrol pumps used something similar, on the right angle from fixed to flexible pipe if remember correctly. Yes see below. Link to comment Share on other sites More sharing options...
WotEver Posted February 6, 2016 Report Share Posted February 6, 2016 I remember those! Link to comment Share on other sites More sharing options...
David Mack Posted February 6, 2016 Report Share Posted February 6, 2016 All info gratefully received. These? http://stores.ebay.co.uk/Engineers-Mate-Ltd/_i.html?_nkw=indicators&submit=Search&_sid=1095654905 Link to comment Share on other sites More sharing options...
MtB Posted February 12, 2016 Report Share Posted February 12, 2016 (edited) Right, finally remembered to photograph mine at the same time as I'm on the boat, and therefore able to do it!) Here yer go... (Dammit, Images to follow, when I can figure out how to get CWF to accept the files from my fone!) Ok... Edited February 12, 2016 by Mike the Boilerman Link to comment Share on other sites More sharing options...
MtB Posted February 12, 2016 Report Share Posted February 12, 2016 The glass window is about 45mm in diameter, and the steel flap (horizontal in the pix) lifts up when water flows and the flow rate can be read from the quadrant the scale on the upper left. Link to comment Share on other sites More sharing options...
mark99 Posted February 13, 2016 Author Report Share Posted February 13, 2016 (edited) The glass window is about 45mm in diameter, and the steel flap (horizontal in the pix) lifts up when water flows and the flow rate can be read from the quadrant the scale on the upper left. It looks like copper only....... it's not shiney <the pipes I mean> Thanks for those. Edited February 13, 2016 by mark99 Link to comment Share on other sites More sharing options...
MtB Posted February 13, 2016 Report Share Posted February 13, 2016 It looks like copper only....... it's not shiney <the pipes I mean> Thanks for those. No, what you get when you buy one is the bronze bit. The copper pipes are provided by the installer, if you want copper. The connections top nd bottom are 1" BSP female. The bronze or gunmetal (not sure which it is) could easily be polished up to 'bright and shiny' with the right gear and a bench grinder, in my opinion. Link to comment Share on other sites More sharing options...
WotEver Posted February 13, 2016 Report Share Posted February 13, 2016 Mike, I think Mark was pointing out that you had copper pipes leading to and from but... they're not shiny Link to comment Share on other sites More sharing options...
MtB Posted February 13, 2016 Report Share Posted February 13, 2016 Mike, I think Mark was pointing out that you had copper pipes leading to and from but... they're not shiny O I C ! Well I don't really agree with polishing stuff. I polished them when I fitted them, and that's their lot! Link to comment Share on other sites More sharing options...
WotEver Posted February 13, 2016 Report Share Posted February 13, 2016 Ooh, a boat owner with coppery bits who's not OCD! You might be unique mate. Link to comment Share on other sites More sharing options...
Tom3 Posted February 15, 2016 Report Share Posted February 15, 2016 Found photo of Gardner coolant flow indicator. As photo shows this can be horizontal or vertically mounted - could be used on any "Non Pressurised" cooling system. Link to comment Share on other sites More sharing options...
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