At One Click Purchasing, we are your reliable source for the NSN part 641-8522 manufactured by Aqua Chem Inc. We carry a wide range of popular NSN items on our website, including Valve Flow Control like part number 641-8522 which is listed with the NSN 4820013550600 for easy identification. If you are interested in 641-8522 item, then take the advantage of our online RFQ service, or peruse our website as you see fit to find other items of interest that you may wish to learn more about.