@MartyU is indeed right you got both the mechanical pump noise (that to me is no problem) as well as the hissing from air escaping those Buhlers, that is indeed the real problem for me anyway. Well honestly it feels kinda wrong to call it a problem cause it´s not exactly a decisive factor whether to get a Buhler mod or not (in case anyone wonder), I have to be honest and say that my pump is actually one of the quieter air pumps of this caliber I´v ever heard it´s the hissing sound that get to me and that is approximately the same for all of us.
@Nick Moxley, it´s hard to say cause we all experience noise differently as well as using different pumps, can use different volume setting (if not using head phones I mean) etc etc.. I for example can live in a apartment with mostly families and seniors as neighbors so I simply cannot run at high volume settings on my AC receiver at home so head phones is my solution to the problem. Ok sure I could run at decent volume daytime but I play in front of a big screen using a projector so often drive later in the evening when the image quality become so much better with no light leakage.
My pump was never really intended for the ordinary commercial business per se it´s very simple but incredibly sturdy built pump mostly in thick metal with no fancy plastic covers etc (like pond pumps and so on), according to Techno Takatsuki it´s made for industrial use and often installed in hospitals, scientific use, chemical instruments etc.
Although honestly I bought it cause it was cheap hehehe, that is the truth I did not expect it to be as quiet and sturdy built as it is so that was a pleasant surprise once it arrived. I kid you not I actually believe a car can run over this thing at low speed without destroying it lol.
If I remember correctly I think it was some UK div of Charles Austen pumps who sold me this on Ebay? Cannot promise that but they are called
aerationpumps on Ebay though and they do have some big office in the UK.
Here I found it after looking around and it seams as if they still have this pump cheaper then ever:
http://www.ebay.com/itm/110480478468
I can basically promise you guys, you will NOT find a better pump for this kinda money this is truly cheap so glad I found this again so I could post it here and tip you guys off. Do not understand why they sell this so cheap when I bought mine a few years ago they said they were selling them out, perhaps they still have stock with no intention to refill it and that explains the price?
Either way I run my CSW at FFB 70 atm and this pump is more then capable at keeping the Buhler´s cold and nice. Pump´s spec is 15l/m but since these Buhler´s offer no real resistance the pump can handle up to 25l/m which is about the same as for most diaphragm pumps @ 15w.
Here you go guys:
http://pdf.directindustry.com/pdf/h...hemical-analizing-equipment/19863-125957.html
I know I know, this is not the "brag about my darn good pump forums" lol, sorry about that I will say no more of this or it will start to look silly.
. However I am glad I got this piece of cooling device for very little money and felt I need to share this in case anyone of you want a new pump as well, after all this one seam cheaper then the other one guys often recommend in this thread and I can personally guarantee that it´s of very solid quality + enough for the Buhlers. Perhaps a perfect match for Buhler modded CSW? In case anyone interested and wanna know the outlets are 8mm in diameter.