At One Click Purchasing, we are your reliable source for the NSN part 8021 REV B manufactured by Howell Laboratories Inc. We carry a wide range of popular NSN items on our website, including Adapter Check Valve like part number 8021 REV B which is listed with the NSN 4730015616122 for easy identification. If you are interested in 8021 REV B 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.