At One Click Purchasing, we are your reliable source for the NSN part D-1719 manufactured by Hydro Mechanical Systems Inc. We carry a wide range of popular NSN items on our website, including Valve Vent like part number D-1719 which is listed with the NSN 4820016416197 for easy identification. If you are interested in D-1719 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.