Owned and operated by ASAP Semiconductor, ASAP NSN Parts is your new one-stop-shop for all your valve by pass air NSN parts and components related needs. Our goal is to make the parts purchasing process as simple as possible. With us, you can find valve by pass air with NSN 1660-01-158-9511 and manufactured by Hamilton Sundstrand Corporation, Sikorsky Aircraft Corporation at some of the most competitive prices in the market. Just fill out and submit an RFQ to get started on a quick and competitive quote.