At One Click Purchasing, we are your reliable source for the NSN part 31A874 manufactured by Heil Environmental Industries. We carry a wide range of popular NSN items on our website, including Valve Diaphragm Sto like part number 31A874 which is listed with the NSN 4820002131042 for easy identification. If you are interested in 31A874 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.