Hi Tim, Thanks for the refs. Will look into them further over the weekend. At this stage particularly interested in looking further into these scroll compressors and making up a steam generation unit for glycerine refining and purification if that is possible. Have you or anyone made a unit like this and if so would appreciate any comments, suggestions or advice you, Jerry or anyone has to offer. Was out at Maui (largest camper van rental firm in NZ) trying to sell them on the concept of these by-pass filters today and see the new Mercedes vans have what appears to be one of these scroll compressors fitted. How do you tell it is actually a scroll compressor rather than some other type? Also does anyone have or can anyone provide a list of vehicles with them fitted? Most of them should be reasonably easy to overhaul I imagine with the main things needing attention being seals and bearings. Is there any particular thing one needs to watch out for and to avoid? Also is one brand better than another. From what I can see the Sanden appears to be a reasonable unit and a lot appear to be being used to replace the ones fitted to BMWs when they break down as you are largely paying for the name if you buy the genuine article in this case. B.r., David
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